18361148
Pregunta 1
Pregunta
1. What is the number one concern about cloud computing?
Respuesta
-
• Too expensive
-
• Security concerns
-
• Too many platforms
-
• Accessibility
Pregunta 2
Pregunta
2. Google Docs is a type of cloud computing
Respuesta
-
True
-
False
Pregunta 3
Pregunta
3. Which one of these is not a cloud computing pricing model
Respuesta
-
• Pay Per Use
-
• Subscription
-
• Ladder
-
• Perpetual License
Pregunta 4
Pregunta
4. Which of these is not a major type of cloud computing usage
Respuesta
-
• Hardware as a service
-
• Platform as a service
-
• Software as a service
-
• Infrastructure as a service
Pregunta 5
Pregunta
5. An Internet connection is necessary for cloud computing interaction
Respuesta
-
True
-
False
Pregunta 6
Pregunta
6. “Cloud” in cloud computing represents what
Respuesta
-
Wireless
-
Hard drives
-
People
-
Internet
Pregunta 7
Pregunta
7. Which of these should a company consider before implementing cloud computing technology. I: Employee satisfaction, II: Potential cost reduction, III: Information sensitivity
Respuesta
-
• Only I
-
• Only II
-
• Only III
-
• I, II, and III
Pregunta 8
Pregunta
8. What exactly is cloud computing
Respuesta
-
• A way to organize desktop computers
-
• Lightweight software that takes up little space on a hard drive
-
• Computing resources that can be accessed on demand, like electricity from a utility
-
• The World Wide Web
Pregunta 9
Pregunta
9. What widely used service is built on cloud-computing technology? I: Twitter, II: Skype, III: Gmail, IV: YouTube.
Respuesta
-
• Only I
-
• Only II
-
• Only III and I
-
• I, II, III and IV
Pregunta 10
Pregunta
10. Cloud computing embraces many concepts that were previously touted as the next big thing in information technology. Which of these is not an antecedent(предшествующее) of the cloud?
Respuesta
-
• Utility computing
-
• Remote hosted services
-
• Grid computing
-
• Desktop computing
Pregunta 11
Pregunta
11. What does SQL stand for
Respuesta
-
• Structured Query Language
-
• Strong Question Language
-
• Structured Question Language
-
• Structured Querty Language
Pregunta 12
Pregunta
12. Which SQL statement is used to extract data from a database?
Respuesta
-
• Select
-
• GET
-
• OPEN
-
• Extract
Pregunta 13
Pregunta
13. Computerized representations of models and attributes of real or simulated entities are?
Respuesta
-
• Data
-
• Knowledge
-
• Information
-
• Database
Pregunta 14
Pregunta
14. Representation of the results of a computational process, such as statistical analysis, or the transcripts of some meanings assigned by human beings is
Respuesta
-
• Data
-
• Knowledge
-
• Information
-
• Database
Pregunta 15
Pregunta
15. Representation of the results of a computer-simulated cognitive process, such as perception, learning, association, and reasoning is
Respuesta
-
• Data
-
• Knowledge
-
• Information
-
• Database
Pregunta 16
Pregunta
16. Continuous representation, similar to the actual information it represents is
Respuesta
-
• Analog data
-
• Digital data
-
• Continuous data
-
• Discrete data
Pregunta 17
Pregunta
17. A discrete representation, breaking the information up into separate(discrete) elements is
Respuesta
-
• Analog data
-
• Digital data
-
• Continuous data
-
• Discrete data
Pregunta 18
Pregunta
18. Two bits can represent
Respuesta
-
• Four things
-
• Two things
-
• Eight things
-
• Ten things
Pregunta 19
Pregunta
19. The extended version of the ASCII character set is not enough for international use
Respuesta
-
• Unicode
-
• Barcode
-
• EBCDIC
-
• Binary code
Pregunta 20
Pregunta
20. The Unicode character set uses _________ per character
Respuesta
-
• 16 bits
-
• 8 bits
-
• 4 bits
-
• 32 bits
Pregunta 21
Pregunta
21. The first 256 characters in the Unicode character set correspond exactly to the extended ASCII character set
Respuesta
-
True
-
False
Pregunta 22
Pregunta
22. List the levels of computer systems from top to down
Respuesta
-
• users, application software, operating system software, and the hardware system
-
• application software, operating system software, users, and the hardware system
-
• application software, users,operating system software, and the hardware system
-
• hardware system, operating system software, application software, and users
Pregunta 23
Pregunta
23. List the levels of computer systems from bottom to up
Respuesta
-
• users, application software, operating system software, and the hardware system
-
• application software, operating system software, users, and the hardware system
-
• application software, users,operating system software, and the hardware system
-
• hardware system, operating system software, application software, and users
Pregunta 24
Pregunta
24. Which software refers to application software?
Respuesta
-
• Microsoft Word
-
• Microsoft Windows
-
• Unix
-
• Mac OS
Pregunta 25
Pregunta
25. Which software refers to application software?
Respuesta
-
• Internet Explorer
-
• Microsoft Windows
-
• Unix
-
• Mac OS
Pregunta 26
Pregunta
26. Which software refers to application software?
Respuesta
-
• Macromedia Dreamweaver
-
• Microsoft Windows
-
• Unix
-
• Mac OS
Pregunta 27
Pregunta
27. Which software refers to application software?
Respuesta
-
• Adobe Acrobat Reader
-
• Microsoft Windows
-
• Unix
-
• Mac OS
Pregunta 28
Pregunta
28. Which software refers to system software?
Respuesta
-
• Macromedia Dreamweaver
-
• Microsoft word
-
• Internet Explorer
-
• Microsoft Windows
Pregunta 29
Pregunta
29. Which software refers to system software?
Respuesta
-
• Macromedia Dreamweaver
-
• Microsoft word
-
• Internet Explorer
-
• Unix
Pregunta 30
Pregunta
30. Which software refers to system software?
Respuesta
-
• Macromedia Dreamweaver
-
• Microsoft word
-
• Internet Explorer
-
• Mac OS
Pregunta 31
Pregunta
31. What is the master controller for all activities that take place within a computer
Respuesta
-
• Operating System
-
• Application Software
-
• DBMS
-
• Word processor
Pregunta 32
Pregunta
32. What does send data from a computer over a network, and collects incoming data sent by other computers
Respuesta
-
• A network interface card (NIC)
-
• A modem
-
• Phone line or cable
-
• Internet service provider
Pregunta 33
Pregunta
33. What is a device that enables data from a computer to be transmitted via phone lines or television cable lines to reach other computers on the Internet?
Respuesta
-
• A network interface card (NIC)
-
• A modem
-
• Phone line or cable
-
• Internet service provider
Pregunta 34
Pregunta
34. What was the first computer prototype used vacuum tubes?
Respuesta
-
• ENIAC
-
• Analytical Engine
-
• Abacus
-
• Hollerith Tabulating Machine
Pregunta 35
Pregunta
35. What is the main component that executes instructions stored in the main memory?
Respuesta
-
• Microprocessor
-
• Main memory
-
• Storage device
-
• Peripheral
Pregunta 36
Pregunta
36. What does store instructions to be executed by the microprocessor?
Respuesta
-
• Microprocessor
-
• Main memory
-
• Storage device
-
• Peripheral
Pregunta 37
Pregunta
37. What do store data permanently even when the computer is turned off?
Respuesta
-
• Microprocessor
-
• Main memory
-
• Storage device
-
• Peripheral
Pregunta 38
Pregunta
38. What enable data input and output?
Respuesta
-
• Microprocessor
-
• Main memory
-
• Storage device
-
• Peripheral
Pregunta 39
Pregunta
39. What acts as the traffic cop controlling the flow of data and coordinating interactions among components in the system?
Respuesta
-
• Microprocessor
-
• Main memory
-
• Storage device
-
• Chipset
Pregunta 40
Pregunta
40. What does provide sockets for microprocessor and memory chips, slots for circuit boards, and the circuitry that enable electrical signals to travel from component to component?
Respuesta
-
• Motherboard
-
• Power supply
-
• Microprocessor
-
• Chipset
Pregunta 41
Pregunta
41. What does provide electrical power to the computer system?
Respuesta
-
• Motherboard
-
• Power supply
-
• Microprocessor
-
• Chipset
Pregunta 42
Pregunta
42. What does process instructions stored in main memory?
Respuesta
-
• Motherboard
-
• Power supply
-
• Microprocessor
-
• Chipset
Pregunta 43
Pregunta
43. What does serve as a socket on the motherboard into which an expansion card maybe inserted?
Respuesta
-
• Expansion slot
-
• Motherboard
-
• Power supply
-
• Microprocessor
Pregunta 44
Pregunta
44. What does enable a computer to control peripheral devices such as the monitor and the microphone?
Respuesta
-
• Expansion card
-
• Motherboard
-
• Power supply
-
• Microprocessor
Pregunta 45
Pregunta
45. What does control data flow among components?
Respuesta
-
• Chipset
-
• Motherboard
-
• Power supply
-
• Microprocessor
Pregunta 46
Pregunta
46. What does transfer data from storage devices to the motherboard?
Respuesta
-
• IDE (Integrated Drive Electronics) cable
-
• Motherboard
-
• Power supply
-
• Microprocessor
Pregunta 47
Pregunta
47. What does store data permanently (even after the computer is turned off)?
Respuesta
-
• Disk drives
-
• Motherboard
-
• Power supply
-
• Microprocessor
Pregunta 48
Pregunta
48. What step of the fetch-execute cycle enables the control unit of the CPU to decode the instruction and direct the necessary data to be moved from memory to the ALU?
Respuesta
-
• Interpret
-
• Fetch
-
• Execute
-
• Store
Pregunta 49
Pregunta
49. What science studies how to refine the design of products to optimize them for human use?
Respuesta
-
• Ergonomics
-
• HCI
-
• Economics
-
• ICT
Pregunta 50
Pregunta
50. What DOS command is used to change the working directory?
Respuesta
-
• сd
-
• md
-
• rd
-
• ren
Pregunta 51
Pregunta
51. What DOS command is used to make a new directory?
Respuesta
-
• cd
-
• md
-
• rd
-
• ren
Pregunta 52
Pregunta
52. What DOS command is used to remove an existing empty directory?
Respuesta
-
• cd
-
• md
-
• rd
-
• ren
Pregunta 53
Pregunta
53. What DOS command is used to rename a file within a directory?
Respuesta
-
• cd
-
• md
-
• rd
-
• ren
Pregunta 54
Pregunta
54. The BIOS initiates the POST (Power-On Self Test) sequence
Respuesta
-
• True
-
• False
Pregunta 55
Pregunta
55. The BIOS enables the video card
Respuesta
-
• True
-
• False
Pregunta 56
Pregunta
56. The BIOS counts and tests memory
Respuesta
-
• True
-
• False
Pregunta 57
Pregunta
57. The BIOS checks for expansion cards and adapters and initializes them
Respuesta
-
• True
-
• False
Pregunta 58
Pregunta
58. The BIOS follows a search order to find the Master Boot Record
Respuesta
-
• True
-
• False
Pregunta 59
Pregunta
59. Interrupt Handler saves contents of registers before it saves the register for its own purposes
Respuesta
-
• True
-
• False
Pregunta 60
Pregunta
60. Interrupts can nest infinitely (гнездиться бесконечно)
Respuesta
-
• True
-
• False
Pregunta 61
Pregunta
61. Interrupt Handler accepts the byte of incoming data
Respuesta
-
• True
-
• False
Pregunta 62
Pregunta
62. Interrupt Handler places the byte in a storage area
Respuesta
-
• True
-
• False
Pregunta 63
Pregunta
63. Interrupt handler cannot be interrupted by a higher priority interrupt
Respuesta
-
• True
-
• False
Pregunta 64
Pregunta
64. Interrupt handler transfers control back to previous task
Respuesta
-
• True
-
• False
Pregunta 65
Pregunta
65. Which of the following are common behaviors of computer viruses? I. Self-replication; II. Infliction of physical damage to the computer's hardware; III Unwarranted file removal
Respuesta
-
• I and II only
-
• II and III only
-
• I and III only
-
• I, II, and III
Pregunta 66
Pregunta
66. Which of the following computer attack methods does not require a hardware or software tool?
Respuesta
-
• Port scanning
-
• Social engineering
-
• Spoofing
-
• Packet sniffing
Pregunta 67
Pregunta
67. What does a packet sniffer do?
Respuesta
-
• Captures data packets that are transmitted through a network
-
• Renders a computer network unusable
-
• Causes one computer to impersonate another
-
• Converts encrypted passwords to plain text
Pregunta 68
Pregunta
68. A computer attack that uses handler computers to control agent computers to attack a target computer is known as a _____ attack.
Respuesta
-
• Smurf
-
• SYN
-
• network connectivity
-
• distributed denial of service
Pregunta 69
Pregunta
69. Attacking a computer by sending it an excessive number of email messages is known as
Respuesta
-
• Smurfing
-
• Spoofing
-
• Spamming
-
• Pinging
Pregunta 70
Pregunta
70. With respect to security on the Internet, what is the purpose of digital signatures?
Respuesta
-
• To verify the identity of a message sender
-
• To request receipts for all sent messages
-
• To post anonymous messages to bulletin boards
-
• To encrypt mail messages
Pregunta 71
Pregunta
71. One of the most common applications of encryption is transmitting data securely over the Web is ______
Respuesta
-
• the Secure Socket Layer (SSL)
-
• a Trojan horse
-
• e-mail
-
• a simple substitution code
Pregunta 72
Pregunta
72. Which encryption method uses a pair of digital keys?
Respuesta
-
• Active-X
-
• SSL
-
• Public key encryption
-
• S-HTTP
Pregunta 73
Pregunta
73. Which of the following reasons is (are) valid for why "IITU" is a bad password? I. It is a word from the dictionary; II It does not contain numbers and symbols; III. It is the name of an institution
Respuesta
-
• I and II only
-
• II and III
-
• I, II, and III
-
• I and III only
Pregunta 74
Pregunta
74. Embedding different types of data, such as sound and graphics, within Internet electronic mail requires which of the following formats to be used for encoding the data?
Respuesta
-
• TCP/IP
-
• GIF
-
• MIME
-
• Encryption
Pregunta 75
Pregunta
75. ISPs can be accessed by which of the following ways? I. Telephone lines II. Cable television systems III. Personal satellite dishes
Respuesta
-
• I only
-
• I and II only
-
• I, II, and III
-
• II only
Pregunta 76
Pregunta
76. The numbers in IP addresses are separated by
Respuesta
-
• points
-
• periods
-
• colons
-
• commas
Pregunta 77
Pregunta
77. What knits the Internet together and allows data to travel smoothly over the communications links provided by NSPs worldwide?
Respuesta
-
• FTP
-
• TCP/IP
-
• HTTP
-
• URL
Pregunta 78
Pregunta
78. What networks are useful in environments where wiring is difficult to install?
Respuesta
-
• Twisted pair
-
• Coaxial
-
• Wirefree
-
• Wireless
Pregunta 79
Pregunta
79. What top-level domain belongs to computers in the category of commercial businesses?
Respuesta
-
• bus
-
• com
-
• org
-
• bsn
Pregunta 80
Pregunta
80. An IP address is a set of four numbers between 0 and
Respuesta
-
• 128
-
• 24
-
• 16
-
• 255
Pregunta 81
Pregunta
81. What top-level domain belongs to computers in the category of networks and ISPs?
Respuesta
-
• adm
-
• int
-
• net
-
• html
Pregunta 82
Pregunta
82. What top-level domain belongs to computers in the category of professional and nonprofit organizations?
Respuesta
-
• com
-
• npo
-
• org
-
• edu
Pregunta 83
Pregunta
83. Which of the following is (are) true about thick and thin clients in a client-server system? I. Thin clients perform relatively little work. II.A Web browser is an example of a thick client. III.A handheld computer is a typical example of a thin client.
Respuesta
-
• I and III only
-
• I, II, and III
-
• III only
-
• I only
Pregunta 84
Pregunta
84. When you send an email to someone, it is sent to
Respuesta
-
• the sender's email server
-
• the sender's email client
-
• the recipient's computer
-
• the recipient's email server
Pregunta 85
Pregunta
85. Using a(n) _____ protocol, the sender and the receiver are synchronized by a signal called a clock
Respuesta
-
• synchronous
-
• asynchronous
-
• analog
-
• block
Pregunta 86
Pregunta
86. The bandwidth (пропускная способность) of a(n) _____ signal is usually measured in bits per second.
Respuesta
-
• video
-
• digital
-
• satellite
-
• analog
Pregunta 87
Pregunta
87. What type of cable is typically used to carry cable television signals because its high capacity allows it to carry signals for more than 100 television channels simultaneously?
Respuesta
-
• BNC
-
• STP
-
• UTP
-
• Coaxial
Pregunta 88
Pregunta
88. A communications _____ is a physical path or frequency for a signal transmission.
Respuesta
-
• band
-
• channel
-
• protocol
-
• bridge
Pregunta 89
Pregunta
89. Which of the following terms represents the transmission capacity of a communications channel?
Respuesta
-
• Indexing
-
• Frequency
-
• Bandwidth
-
• Resolution
Pregunta 90
Pregunta
90. Which of the following are commonly used network topologies? I.Star II. Ring III.Modems
Respuesta
-
• I and II only
-
• III only
-
• II and III only
-
• I and III only
Pregunta 91
Pregunta
91. When two devices communicate, they must agree on protocols for I.starting and ending a transmission II.recognizing transmission errors III.determining the rate of data transmission
Respuesta
-
• II and III only
-
• I and II only
-
• I, II, and III
-
• I and III only
Pregunta 92
Pregunta
92. Modems transfer data between computers by converting between
Respuesta
-
• analog and digital
-
• Ethernet and digital
-
• video and sound
-
• analog and Ethernet
Pregunta 93
Pregunta
93. Which of the following are potential communications links? I. Telephone wiring II. Fiber-optic cable III. Satellite
Respuesta
-
• I and II only
-
• II only
-
• I, II, and III
-
• III only
Pregunta 94
Pregunta
94. What kind of waves provides wireless transmission for mobile communications, such as cellular telephones, and for stationary communications where it is difficult or impossible to install cabling, such as in remote, geographically rugged regions?
Respuesta
-
• Infrared
-
• Radio
-
• UTP
-
• Line-of-sight
Pregunta 95
Pregunta
95. Which of the following are protocols associated with Internet email? I.SMTP II.POP III. FTP
Respuesta
-
• I and III only
-
• I and II only
-
• I, II, and III
-
• II and III only
Pregunta 96
Pregunta
96. Which of the following services may be provided by an ISP? I. A temporary IP address II. An account on the ISP's email server III. Web hosting of the customer's Web page
Respuesta
-
• II and III only
-
• I, II, and III
-
• I and II only
-
• I and III only
Pregunta 97
Pregunta
97. What is a backbone provider (also known as a Network Service Provider)?
Respuesta
-
• A group of small providers that work together to provide Internet access
-
• Any company that provides Web-based services
-
• A provider of national and international network links for the Internet
-
• The largest provider of Internet access within a particular region
Pregunta 98
Pregunta
98. With respect to the Internet, routers are used to connect
Respuesta
-
• a computer and a modem
-
• a computer to the Internet
-
• any two computers
-
• different networks of computers
Pregunta 99
Pregunta
99. With respect to the Internet, companies need to register a unique domain name when
Respuesta
-
• buying a new modem
-
• establishing an electronic commerce Web site
-
• buying a new computer
-
• connecting a new computer to the Internet
Pregunta 100
Pregunta
100. Which of the following are tasks performed by a Web browser? I. Sending a request for a specific file to a server II. Formatting and displaying a file received from a server III. Sending additional requests to the server to retrieve any graphics elements such as icons or images for a requested file
Respuesta
-
• I, II, and III
-
• I and III only
-
• II and III only
-
• I and II only
Pregunta 101
Pregunta
101. What is the protocol used to transfer Web pages?
Respuesta
-
• html
-
• http
-
• udp
-
• ftp
Pregunta 102
Pregunta
102. What is the name of the Internet protocol used to make sure messages are reliably transmitted and received by the destination computer?
Respuesta
-
• TCP
-
• ISP
-
• IP
-
• POP
Pregunta 103
Pregunta
103. The World Wide Web is
Respuesta
-
• the same as the Internet
-
• a software package
-
• a client/server application program used to access the Internet
-
• a collection of Web servers throughout the world
Pregunta 104
Pregunta
104. When a fully explicit URL such as http://www.iitu.kz is provided to an Internet browser, "http" refers to the name of the
Respuesta
-
• domain where the Web server resides
-
• language in which the page is written
-
• Web server containing the Web page
-
• protocol used to perform the operation
Pregunta 105
Pregunta
105. IP host addresses on the Internet are composed of which of the following?
Respuesta
-
• A 24-bit number
-
• A single decimal number ranging from 0 to 255
-
• Four decimal numbers ranging from 0 to 255
-
• Any number of lowercase alphanumeric characters
Pregunta 106
Pregunta
106. After gaining access to a computer system, hackers will typically do which of the following? I. Set up control for further attacks II.Take, alter, or delete data III. Use the computer system resources
Respuesta
-
• I, II, and III
-
• II and III only
-
• I and II only
-
• II only
Pregunta 107
Pregunta
107. Which of the following is (are) true regarding network bandwidth attacks? I.They can be used to launch a denial of service attack. II.They can cause a Web site to become unavailable. III.They work by flooding a network with traffic.
Respuesta
-
• I and II only
-
• II and III only
-
• I, II, and III
-
• I and III only
Pregunta 108
Pregunta
108. Which of the following computer attacks is spoofing?
Respuesta
-
• Using a program to decrypt passwords
-
• Monitoring a network to intercept data
-
• Using one computer to impersonate another
-
• Accessing an unprotected port on a computer
Pregunta 109
Pregunta
109. The method of cracking a password by trying all possible alphanumeric combinations is known as a _____ attack
Respuesta
-
• port scanning
-
• dictionary
-
• brute force
-
• man-in-the-middle
Pregunta 110
Pregunta
110. After loading a word processor document from a floppy, a user's computer begins to show symptoms of being infected by a virus.Which of the following is true concerning this situation?
Respuesta
-
• The document text could have contained an embedded virus.
-
• The word processing program checks all documents for viruses before using them, so the source the virus was not the document.
-
• A document cannot contain a virus, so the source of the virus was not the word processing document.
-
• The document could have contained a macro that contained a virus.
Pregunta 111
Pregunta
111. Which of the following is email spoofing?
Respuesta
-
• Sending large amounts of unsolicited email
-
• Sending viruses through email
-
• Modifying an email header to fake the email source
-
• Intercepting email by monitoring a network
Pregunta 112
Pregunta
112. Which of the following is (are) true regarding a Smurf attack? I.It can use the ping command to perform the attack.II.It allows a hacker to steal data from a computer.III.It uses other computers on a network to attack a single computer
Respuesta
-
• II and III only
-
• I and III only
-
• I and II only
-
• I, II, and III
Pregunta 113
Pregunta
113. Which of the following consequences of executing a virus on a PC is (are) possible? I.Files appear to be missing or deleted from the hard disk. II.Either the PC system board or a disk drive is physically damaged. III.There is low computer memory on disks.
Respuesta
-
• II and III only
-
• I only
-
• I and III only
-
• I, II, and III
Pregunta 114
Pregunta
114. Which of the following is (are) true regarding computer security attacks? I. Hackers can cause home computers to attack other computers. II. Organizations typically experience more computer security breaches from internal personnel than from people external to the organization.
Respuesta
-
• I only
-
• II only
-
• None
-
• I and II √
Pregunta 115
Pregunta
115. Which of the following is (are) true regarding network connectivity attacks? I. A network connectivity attack can be achieved by generating numerous half-open connections to the target computer. II. A network connectivity attack can be achieved by generating excessive amount of traffic on the target network.
Respuesta
-
• I and II
-
• None
-
• I only
-
• II only
Pregunta 116
Pregunta
116. Which of the following can be used to prevent social engineering attacks? I. Verifying identities of people requesting sensitive information II. Using data encryption III. Being aware of computer fraud schemes
Respuesta
-
• II and III only
-
• I, II, and III
-
• I and III only
-
• III only
Pregunta 117
Pregunta
117. Which of the following is (are) true about encryption of data? I.Given the high speed and low cost CPUs available, even the most complex encrypted data is not entirely safe for a long period of time. II.The more bits in the key of the encryption algorithm, the harder it is to break the encryption. III.In public key encryption, the sender and the receiver of encrypted data both use the same key value to encrypt and decrypt the data.
Respuesta
-
• I and III only
-
• I, II, and III
-
• II and III only
-
• I and II only
Pregunta 118
Pregunta
118. How does a receiver of an encrypted message verify that the message originated from the sender?
Respuesta
-
• The receiver compares the message with the decrypted signature of the sender.
-
• The receiver compares the message hashed with the sender's signature.
-
• The receiver compares the message hashed with the decrypted signature of the sender.
-
• The receiver compares the received message with the sender's signature.
Pregunta 119
Pregunta
119. To encrypt a message using public-key encryption scheme, which of the following must be done?
Respuesta
-
• Encrypt the message using the receiver's private key.
-
• Encrypt the message using the sender's private key.
-
• Encrypt the message using the receiver's public key.
-
• Encrypt the message using the sender's public key.
Pregunta 120
Pregunta
120. Which of the following must be included on a digital certificate? I. The name of the entity and the expiration date II. The number of times the certificate has been viewed III. The digital signature of the certificate authority
Respuesta
-
• II and III only
-
• I, and III
-
• I, II, and III
-
• I and II only
Pregunta 121
Pregunta
121. Encryption is used to
Respuesta
-
• save storage space
-
• store data files in a vault
-
• protect privacy by encoding data
-
• archive system files
Pregunta 122
Pregunta
122. Of the following processes, which best characterizes the authentication process?
Respuesta
-
• Logging into a secure site
-
• Verifying that software that is in use is not a pirated copy
-
• Authorizing use of some resource by a particular user
-
• Establishing a user identity
Pregunta 123
Pregunta
123. Which of the following is (are) true regarding computer network intrusion detection systems? I.They compare traffic against a database of known attack signatures.II. They can generate false alarms.
Respuesta
-
• I only
-
• None
-
• II only
-
• I and II
Pregunta 124
Pregunta
124. The security of data can be violated through which of the following? I.Malicious acts II.User errors III.Disasters
Respuesta
-
• II and III only
-
• I, II, and III
-
• I only
-
• I and III only
Pregunta 125
Pregunta
125. Which of the following is (are) true regarding computer security? I.Applying all available security measures may negatively impact system usability. II.Most intrusions result from exploitation of known vulnerabilities that remain unpatched.
Respuesta
-
• None
-
• I and II
-
• II only
-
• I only
Pregunta 126
Pregunta
126. Good computer security practices include which of the following? I.Never shop online. II.Remove excess RAM from computers. III.Avoid sending email at night.
Respuesta
-
• II and III only
-
• I and II only
-
• I, II, and III
-
• None
Pregunta 127
Pregunta
127. Examples of network monitoring tools include which of the following? I.Packet sniffers II.Antivirus software III.Security patches
Respuesta
-
• I only
-
• I and III only
-
• II only
-
• I, II, and III
Pregunta 128
Pregunta
128. Which of the following is (are) true of anti-virus software? I.Typically, it scans both files and memory. II.It is ineffective unless it is updated frequently. III.It protects against network bandwidth attacks.
Respuesta
-
• II only
-
• I and II only
-
• I, II, and III
-
• I and III only
Pregunta 129
Pregunta
129. Which of the following is (are) important to ensuring computer security? I.Keep applications and operating system updated with the latest security patches. II.Replace motherboard batteries regularly. III.Use firewalls
Respuesta
-
• III only
-
• I, II, and III
-
• I and III only
-
• II and III only
Pregunta 130
Pregunta
130. Which of the following statements is (are) true about smart cards? I.They are vulnerable to Internet attacks. II.They can encrypt data.
Respuesta
-
• II only
-
• None
-
• I and II
-
• I only
Pregunta 131
Pregunta
131. Which of the following is correct with respect to customers providing highly personal information across the Internet through electronic commerce transactions?
Respuesta
-
131. Which of the following is correct with respect to customers providing highly personal information across the Internet through electronic commerce transactions?
-
• Transactions are relatively secure between the consumer and a company's Web site if the data is encrypted.
-
• It is impossible for anybody to see the transaction on the Internet except for the intended Web site conducting the transaction.
-
• If a transaction is encrypted, any unauthorized parties intercepting the transaction will take ten or more years to decrypt the information.
Pregunta 132
Pregunta
132. Which of the following comparisons between public-key encryption schemes and private-key encryption schemes is true?
Respuesta
-
• It takes longer to transmit encrypted data using private-key encryption schemes than public-key encryption schemes.
-
• It is easier to decrypt data using private-key encryption schemes than public-key encryption schemes.
-
• Private-key encryption schemes are more secure than public-key encryption schemes.
-
• Public-key encryption schemes involve more computations than private-key encryption schemes.
Pregunta 133
Pregunta
133. Which of the following is true about private-key encryption schemes?
Respuesta
-
• The sender and the receiver have different private keys.
-
• The sender and the receiver use the same private key.
-
• The sender and the receiver have two private keys, one for encryption and one for decryption.
-
• The sender must notify the receiver before sending a message.
Pregunta 134
Pregunta
134. Which of the following is (are) true regarding network monitoring tools? I. They should only be installed in a single location on a network. II. Monitoring only needs to be done when a problem is suspected.
Respuesta
-
• None
-
• I and II
-
• II only
-
• I only
Pregunta 135
Pregunta
135. Anti-virus software with updated virus definitions typically protects against which of the following? I. Worms II. Trojan horse programs
Respuesta
-
• I only
-
• None
-
• I and II
-
• II only
Pregunta 136
Pregunta
136. Which of the following path formats can be used to specify the value of the href attribute of the<xmp><a></xmp> tag? I. An absolute path II. A relative path
Respuesta
-
• I and II
-
• I only
-
• None
-
• II only
Pregunta 137
Pregunta
137. ANSI stands for
Respuesta
-
• All National Standard of Information
-
• American National System Information
-
• American National Standards Institute √
-
• All National Standards Institute
Pregunta 138
Pregunta
138. _________ receives input from the user and processes this input through the computer to produce output.
Respuesta
-
• Hardware
-
• Software
-
• Computer system
-
• Network system
Pregunta 139
Pregunta
139. ________________is the delay between the time when the memory device receives an address and the time when the first bit of data is available from the memory device.
Respuesta
-
• Latency
-
• RAM
-
• Capacity
-
• DRAM
Pregunta 140
Pregunta
140. Who designed a general-purpose calculating device, the Analytical Engine?
Respuesta
-
• Augusta Ada King
-
• Gordon Moore
-
• Jack Kilby
-
• Charles Babbage
Pregunta 141
Pregunta
141. PCI stands for
Respuesta
-
• Peripheral Component Interconnect
-
• Peripheral Computer Internet
-
• Peripheral Component Interaction
-
• Peripheral Computer Interaction
Pregunta 142
Pregunta
141.1. Convert the binary number 01011 to decimal
Respuesta
-
• 11
-
• 110
-
• 1011
-
• 10
Pregunta 143
Pregunta
142. Convert the decimal number 63 to binary
Respuesta
-
• 111111
-
• 110111
-
• 0110111
-
• 11011111
Pregunta 144
Pregunta
143. Convert the hexadecimal text D9 to binary
Respuesta
-
• 1101 1001
-
• 1010 0111
-
• 1110 0100
-
• 1110 1101
Pregunta 145
Pregunta
144. Convert this binary number 010101 to decimal
Respuesta
-
• 21
-
• 20
-
• 25
-
• 22
Pregunta 146
Pregunta
145. Convert this hexadecimal number 8F to decimal
Respuesta
-
• 143
-
• 142
-
• 141
-
• 140
Pregunta 147
Pregunta
146. Convert this decimal number 125 to binary
Respuesta
-
• 1111101
-
• 1101011
-
• 1111011
-
• 1101001
Pregunta 148
Pregunta
147. Convert this hexadecimal number A3 to binary
Respuesta
-
• 1010 0011
-
• 0110 1111
-
• 0110 1100
-
• 0111 1111
Pregunta 149
Pregunta
148. Convert this decimal number 117 to hexadecimal
Respuesta
-
• 75
-
• 0111 1111
-
• 85
-
• 0110 1111
Pregunta 150
Pregunta
150. Convert this binary number 10001001 to hexadecimal
Respuesta
-
• 89h
-
• 99a
-
• 0111 0111
-
• 89
Pregunta 151
Pregunta
151. Match the different types of buses
Respuesta
-
Front side bus Bus on the motherboard that transfers data between the CPU and the chipset
-
PCI Predominant bus for newer systems
-
AGP Very fast, running at 66 MHz with a 32-bit word size, and transferring 266 MBps
-
IDE bus Transfers data between storage devices and the chipset
-
USB Not rated with a MHz speed; rated by peak transfer rate
-
FireWire High transfer rate designed for high-speed external peripherals such as DVD-ROM and hard disk drives
Pregunta 152
Pregunta
152. This means that each layer needs only a limited amount of knowledge to do its job
Respuesta
-
• Encapsulation
-
• Abstraction
-
• Deduction
-
• E-learning
Pregunta 153
Pregunta
153. What is the use of a range of modern information and technologies by government to improve efficiency, service etc. i.e. Internet,mobile,local area network?
Respuesta
-
• E-Commerce
-
• E-Learning
-
• E-Governance
-
• E-Bussiness
Pregunta 154
Pregunta
154. What is referring to data in electronic form, which is logically associated with other data in electronic form and which is used by the signatory to sign?
Respuesta
-
• Cryptographic
-
• Electronic signature
-
• Telegraph signatures
-
• Faxed signatures
Pregunta 155
Pregunta
155. Components of a Multimedia System (match them with their examples):
Respuesta
-
Capture devices Video Camera, Video Recorder, Audio Microphone, Keyboards, mice, graphics tablets, 3D input devices, tactile sensors, VR devices. Digitising/Sampling Hardware
-
Storage Devices Hard disks, CD-ROMs, Jaz/Zip drives, DVD
-
Communication Networks Ethernet, Token Ring, FDDI, ATM, Intranets, Internets
-
Computer Systems Multimedia Desktop machines, Workstations, MPEG/VIDEO/DSP Hardware
-
Display Devices CD-quality speakers, HDTV,SVGA, Hi-Resolution monitors, Color printers
Pregunta 156
Pregunta
156. _____________provides us a means by which we can access the applications as utilities, over the Internet. It allows us to create, configure, and customize applications online.
Respuesta
-
• Cloud computing
-
• E-commerce
-
• E-learning
-
• Data centers
Pregunta 157
Pregunta
157. What is a term for all types of technology-enhanced learning (TEL), where technology is used to support the learning process?
Respuesta
-
• Cloud computing
-
• E-commerce
-
• E-learning
-
• Data centers
Pregunta 158
Pregunta
158. Match the types of E-Commerce
Respuesta
-
Business-to-Business(B-to-B) Is a website that is dedicated to exchange of information, goods and services to other business rather than final consumers.
-
Business-to-Customer(B-to-C) Is a website where all transactions take place between a business house and the final consumer
-
Consumers-to-businesses (C2B) Consumers make known a particular need for a product or service, and suppliers compete to provide the product or service to consumers.
-
Consumer-to-consumer Is a website where all the transactions take place between a consumer and the website acting asa platform that brings the buyer and the seller together
Pregunta 159
Pregunta
159. Match the Layers of software
1
2
3
4
5
6
7
8
9
10
Respuesta
-
User-Written Scripts
-
User Interface
-
Application
-
Run-time Library
-
Application Program Interface
-
Operating System
-
Kernel
-
Device Drivers
-
BIOS
-
Hardware
Pregunta 160
Pregunta
160. Match the definitions of the types of the interfaces
Respuesta
-
Command line interface the user types a command on the keyboard, the computer executes the command and provides textual output
-
Graphical user interface uses windows, icons, menus and pointers (WIMP) which can be manipulated by a mouse (and often to an extent by a keyboard as well).
Pregunta 161
Pregunta
161. What is a continuous representation, analogous to the actual information it represents?
Respuesta
-
• Analog data
-
• Data
-
• Information
-
• Knowledge
Pregunta 162
Pregunta
162. What is the technology that uses computing with high speed communication links to spread information from one place to another
Respuesta
-
• Information technology
-
• Data
-
• Knowledge
-
• Computing systems
Pregunta 163
Pregunta
163. _______are complex devices, dealing with a vast array of information categories
Respuesta
-
• Information
-
• Data
-
• Knowledge
-
• Computing systems
Pregunta 164
Pregunta
164. In cryptography, what is cipher? I. algorithm for performing encryption and decryption II. encrypted message
Respuesta
-
• Only I
-
• Only II
-
• Both I and II
-
• None
Pregunta 165
Pregunta
165. In asymmetric key cryptography, the private key is kept by
Respuesta
-
• Sender
-
• Receiver
-
• Sender and receiver
-
• All connected devices to the network
Pregunta 166
Pregunta
166. ____________is a set of computer instructions or data.
Respuesta
-
• Software
-
• Hardware
-
• Disk drive
-
• Memory
Pregunta 167
Pregunta
167. What provides connections among computers to enable computers to share data (e.g. documents), hardware (e.g. printers), and software resources (e.g. application programs)?
Respuesta
-
• Drivers
-
• CPU
-
• Network
-
• Memory
Pregunta 168
Pregunta
168. What is the IDE (Integrated Drive Electronics) cable
Respuesta
-
• Rolls data flow among component
-
• Transfers data from storage devices to the motherboard
-
• Stores data permanently
-
• Serves as a socket on the motherboard
Pregunta 169
Pregunta
169. What allow users to automate sequences of actions they perform frequently?
Respuesta
-
• Script
-
• Macros
-
• Script and macros
-
• None
Pregunta 170
Pregunta
170. What is the Trap?
Respuesta
-
• An event triggered by an external signal
-
• Keeps track of all the processes running
-
• Places the byte in a storage area
-
• A signal informing a program that an event has occurred
Pregunta 171
Pregunta
171. _________ is the rapid display of a sequence of images of 2-D or 3-D artwork or model positions in order to create an illusion of movement.
Respuesta
-
• Text
-
• Animation
-
• Video conferencing
-
• Picture
Pregunta 172
Pregunta
172. How we call the process, when each user has a single view of the available resources, independently of how they are arranged in terms of physical devices?
Respuesta
-
• Scalability
-
• Elasticity
-
• Virtualization
-
• Lower Infrastructure Costs
Pregunta 173
Pregunta
173. Indicate working models for cloud computing:
Respuesta
-
• Deployment models only
-
• Deployment and Service Models
-
• Service models only
-
• None
Pregunta 174
Pregunta
174. Which of the following cloud deployment models allows systems and services to be accessible within an organization?
Respuesta
-
• Public Cloud
-
• Community Cloud
-
• Private Cloud
-
• None
Pregunta 175
Pregunta
175. What are the Service Models?
Respuesta
-
• They are the reference models on which the Cloud Computing is based
-
• They allow systems and services to be accessible by group of organizations
-
• They allow systems and services to be easily accessible to the general public
-
• None
Pregunta 176
Pregunta
176. What provides access to fundamental resources such as physical machines, virtual machines, virtual storage?
Respuesta
-
• SaaS
-
• IaaS
-
• PaaS
-
• None
Pregunta 177
Pregunta
177. What provides the runtime environment for applications, development & deployment tools?
Respuesta
-
• SaaS
-
• IaaS
-
• PaaS
-
• None
Pregunta 178
Pregunta
178. Which model allows using software applications as a service to end users?
Respuesta
-
• SaaS
-
• IaaS
-
• PaaS
-
• None
Pregunta 179
Pregunta
179. What provides a uniform abstraction of the underlying physical machine?
Respuesta
-
• Abstraction
-
• Virtualization
-
• Hypervision
-
• None
Pregunta 180
Pregunta
180. What has the same form as a URL but may not identify an actual location on the Internet?
Respuesta
-
• URI
-
• URN
-
• URL
-
• DNS
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