7347705
Descrição
Quiz por Hello World, atualizado more than 1 year ago
|
Criado por Hello World
mais de 7 anos atrás
|
|
Questão 1
Questão
1. TCP/IP stands for
Responda
-
o TCP/IP (Transmission Control Protocol/Internet Protocol)
-
o TCP/IP (Transfer Control Protocol/Internet Protocol
-
o TCP/IP (Transmission Control Protocol/Individual Protocol)
-
o TCP/IP (Transcript Control Protocol/Internet Protocol)
Questão 2
Questão
2. When was TCP/IP developed?
Responda
-
o 1978
-
o 1977
-
o 1976
-
o 1975
Questão 3
Questão
3. With whom TCP/IP was driven
Responda
-
o Kahn and Cerf
-
o Ronald and Cerf
-
o Cerf and George
-
o McColin and Kahn
Questão 4
Questão
4. TCP is higher layer
Responda
- True
- False
Questão 5
Questão
5. What is the function of a subnet mask
Responda
-
o to determine whether an IP address exists on the local network or whether it must be routed outside the local network.
-
o process that applies binary logic to yield binary results
-
o It sends out ICMP (Internet Control Message Protocol) messages to verify both the logical addresses & the Physical connection.
-
o to determine whether an IP address exists on the global network or whether it must be routed outside the global network.
Questão 6
Questão
6. Which of the following is false about Subnet Mask?
Responda
-
o The function of a subnet mask is to determine whether an IP address exists on the local network or whether it must be routed outside the local network.
-
o It is applied to a message’s destination address to extract the network address.
-
o If the extracted network address matches the local network ID, the destination is located on the local network.
-
o It sends out ICMP (Internet Control Message Protocol) messages to verify both the logical addresses & the Physical connection
Questão 7
Questão
7. Define a boolean algebra
Responda
-
o process that applies binary logic to yield binary results
-
o to determine whether an IP address exists on the local network or whether it must be routed outside the local network.
-
o It sends out ICMP (Internet Control Message Protocol) messages to verify both the logical addresses & the Physical connection.
-
o to determine whether an IP address exists on the global network or whether it must be routed outside the global network.
Questão 8
Questão
8. Define class A
Responda
-
o large organizations, governments
-
o medium sized organizations
-
o small organizations
-
o extra small organisations
Questão 9
Questão
9. Define class B
Responda
-
o large organizations, governments
-
o medium sized organizations
-
o small organizations
-
o extra small organisations
Questão 10
Questão
10. Define class C
Responda
-
o large organizations, governments
-
o medium sized organizations
-
o small organizations
-
o extra small organisation
Questão 11
Questão
11. In Class A an IP address starts with
Responda
-
o 0
-
o 10
-
o 110
-
o 1010
Questão 12
Questão
12. In Class C the network prefix is
Responda
-
o 24 bits long
-
o 16 bits long
-
o 8 bits long
-
o 32 bits long
Questão 13
Questão
13. Into how many classes divided the address space in classful addressing ?
Responda
-
5
-
4
-
3
-
2
Questão 14
Questão
14. How many layers have ISO/OSI Network Model
Responda
-
7
-
6
-
8
-
5
Questão 15
Questão
15. What is a link layer
Responda
-
o Includes device driver and network interface card
-
o Handles the movement of packets
-
o Provides a reliable flow of data between two hosts
-
o Handles the details of the particular application
Questão 16
Questão
16. What is a network layer
Responda
-
o Includes device driver and network interface card
-
o Handles the movement of packets
-
o Provides a reliable flow of data between two hosts
-
o Handles the details of the particular application
Questão 17
Questão
17. What is a transport layer
Responda
-
o Includes device driver and network interface card
-
o Handles the movement of packets
-
o Provides a reliable flow of data between two hosts
-
o Handles the details of the particular application
Questão 18
Questão
18. What is an application layer
Responda
-
o Includes device driver and network interface card
-
o Handles the movement of packets
-
o Provides a reliable flow of data between two hosts
-
o Handles the details of the particular application
Questão 19
Questão
19. In Class B an IP address starts with
Responda
-
o 0
-
o 10
-
o 110
-
o 1010
Questão 20
Questão
20. In Class C an IP address starts with
Responda
-
o 0
-
o 10
-
o 110
-
o 1010
Questão 21
Questão
21. In Class A the network prefix is
Responda
-
o 24 bits long
-
o 16 bits long
-
o 8 bits long
-
o 32 bits long
Questão 22
Questão
22. In Class B the network prefix is
Responda
-
o 24 bits long
-
o 16 bits long
-
o 8 bits long
-
o 32 bits long
Questão 23
Questão
23. PING stands for
Responda
-
o Packet Internet Groper
-
o Pocket Internet Groper
-
o Ping Internet Groper
-
o Packet Internet Gathering
Questão 24
Questão
24. ICMP stands for
Responda
-
o Internet Control Message Protocol
-
o Internet Control Machine Protocol
-
o Internet Clarify Message Protocol
-
o Internet Control Management Protocol
Questão 25
Questão
25. Define PING
Responda
-
o command verifies OSI Layer 3
-
o verifies both the logical addresses & the Physical connection
-
o process that applies binary logic to yield binary results
-
o verifies the Physical connection
Questão 26
Questão
26. Virtual memory provides
Responda
-
o Automatic storage allocation
-
o Protection
-
o Sharibility
-
o All the above
Questão 27
Questão
27. Where Virtual Machine was developed?
Responda
-
o Lancaster University
-
o Manchester University
-
o MIT
-
o Cambridge
Questão 28
Questão
28. What is the first commercial computer with virtual machine
Responda
-
o B5000
-
o B5550
-
o B5500
-
o C5000
Questão 29
Questão
29. When was the first commercial computer with virtual machine released?
Responda
-
o 1961
-
o 1962
-
o 1963
-
o 1964
Questão 30
Questão
30. Which of the following is false about VM and performance?
Responda
-
o Better performance: we can use more memory than we have
-
o Nothing; mapping to memory or disk is just as easy
-
o Worse performance: reading from disk is slower than RAM
-
o Good performance: reading from disk is slower than RAM
Questão 31
Questão
31. Which of the following is false about usability of Virtual Memory?
Responda
-
o Not enough memory
-
o Holes in the address space
-
o Keeping program secure
-
o Keeping program insecure
Questão 32
Questão
32. Define virtual address space
Responda
-
o process refers to the logical (or virtual) view of how a process is stored in memory
-
o used to translate the virtual addresses seen by the application into physical addresses
-
o a segment of virtual memory that has been assigned a direct byte-for-byte correlation with some portion of a file or file-like resource.
-
o none of the mentioned
Questão 33
Questão
33. Define a page tables
Responda
-
o process refers to the logical (or virtual) view of how a process is stored in memory
-
o used to translate the virtual addresses seen by the application into physical addresses
-
o a segment of virtual memory that has been assigned a direct byte-for-byte correlation with some portion of a file or file-like resource.
-
o none of the mentioned
Questão 34
Questão
34. Which of the following is incorrect about Subnet Mask
Responda
-
o The function of a subnet mask is to determine whether an IP address exists on the local network or whether it must be routed outside the local network.
-
o It is applied to a message’s destination address to extract the network address.
-
o to determine whether an IP address exists on the global network or whether it must be routed outside the global network.
-
o If the extracted network address matches the local network ID, the destination is located on the local network.
Questão 35
Questão
35. What is a port number for SSH
Responda
-
o TCP 22
-
o TCP 33
-
o TCP 25
-
o TCP 443
Questão 36
Questão
36. POP stands for
Responda
-
o Post Office Protocol
-
o Postal Office Protocol
-
o Pop Office Protocol
-
o Prefix Office Protocol
Questão 37
Questão
37. Common port number for web pages
Responda
-
o 80
-
o 23
-
o 25
-
o 110
Questão 38
Questão
38. Common port number for telnet
Responda
-
o 80
-
o 23
-
o 25
-
o 110
Questão 39
Questão
39. Common port number for mail
Responda
-
o 80
-
o 23
-
o 25 and 110
-
o 111
Questão 40
Questão
40. How many classes have a subnet mask
Responda
-
1
-
2
-
3
-
4
Questão 41
Questão
41. At the FILE SYSTEM SECURITY what is an Access right?
Responda
-
o The way in which an object is accessed by a subject
-
o Anything to which access is controlled
-
o An entity capable of accessing objects
-
o None of them
Questão 42
Questão
42. At Linux Virtual File System Concept, The four primary object types in VFS are as follows:
Responda
-
o Superblock object, inode object, dentry object, file object
-
o System object, software object, hardware object, network object
-
o Virtual object, physical object, i/o object, calling object
-
o File system object, user object, disk object, mapping object
Questão 43
Questão
43. What is an EMBEDDED SYSTEMS?
Responda
-
o combination of computer hardware and software, and perhaps additional mechanical or other part, designed to perform a dedicated function
-
o A file consists of a collection of records
-
o The cache manager calls the log file system to prompt it to flush the log file to disk.
-
o Once the log file updates are safely on disk, the cache manager flushes the volume changes to disk
Questão 44
Questão
44. CHARACTERISTICS OF EMBEDDED OPERATING SYSTEMS, Give definition to Real-time operation:
Responda
-
o In many embedded systems, the correctness of a computation depends, in part, on the time at which it is delivered
-
o Embedded software may execute in response to external events
-
o Condtional compilation can be used
-
o There is virtually no device that needs to be supported by all versions of the OS, and the range of I/O devices is large
Questão 45
Questão
45. Give the correct way to “Loading an eCos Configuration”:
Responda
-
o GNU make utility>>Application source code>>GNU cross compiler>>GNU linker>>Executable file
-
o Application source code>>GNU linker>>GNU cross compiler>>GNU make utility>>Executable file
-
o GNU linker>>Application source code>>GNU make utility>>GNU cross compiler>>Executable file
-
o GNU cross compiler>>GNU linker>>GNU make utility>>Application source code>>Executable file
Questão 46
Questão
46. Choose the correct choice of the “eCos Layered Structure” from bottom- to- top?
Responda
-
o Hardware abstraction layer, Kernel, I/O system, Standard C library, User application code
-
o Kernel, I/O system, Standard C library, User application code, Hardware abstraction layer
-
o User application code, Standard C library, I/O system, Kernel, Hardware abstraction layer
-
o I/O system, Kernel, Hardware abstraction layer, Standard C library, User application code.
Questão 47
Questão
47. How many implemented separate modules has The HAL?
Responda
-
3
-
4
-
5
-
6
Questão 48
Questão
48. How many main objectives has The eCos Kernel was designed to satisfy?
Responda
-
4
-
5
-
6
-
7
Questão 49
Questão
49. What does “TINYOS” mean?
Responda
-
o Represents a significant departure from other embedded operating systems
-
o is a flag that a thread can check before executing a particular piece of code.
-
o A different distributes of Linux.
-
o A different versions of Windows.
Questão 50
Questão
50. Three abstractions for resources are used in TinyOS:
Responda
-
o Dedicated, Virtualized, Shared
-
o Abstracted, Powered, Protected
-
o Determined, Called, Multiplexed
-
o Needed, Controlled, Used
Questão 51
Questão
51. What is a Computer Security?
Responda
-
o The protection afforded to an automated information system in order to attain the applicable objectives of preserving the integrity, availability and confidentiality of information resources
-
o Comparing the information systems with computer systems
-
o Updating hardware and software
-
o Creating the local and global networks for computer systems
Questão 52
Questão
52. This definition introduces three key objectives that are at the heart of computer security:
Responda
-
o Confidentiality, Integrity, Availability
-
o Protection, Updating, Creating
-
o Attacking, Copying, Pasting
-
o Dividing, Working, Researching
Questão 53
Questão
53. Although the use of the CIA triad to define security objects is well established, some in the security field feel that additional concepts are needed to present a complete picture. Two of the most commonly mentioned are as follows:
Responda
-
o Authenticity, Accountability
-
o Loggin, Entering
-
o Accessibility, Availability
-
o Realibility, Security
Questão 54
Questão
54. Network security attacks can be classified as:
Responda
-
o Passive and active attacks
-
o Dangerous and undangerous
-
o Correct and incorrect
-
o Direct and indirect.
Questão 55
Questão
55. In an important early study of intrusion, Anderson[ANDE80] identified three classes of intruders:
Responda
-
o Masquerader, misfeasor, clandestine user
-
o Individual, legitimate, authorized
-
o Control, exploit, system
-
o Outside, inside, offside.
Questão 56
Questão
56. How many parts of Memory Hierarchy?
Responda
-
5
-
4
-
3
-
2
Questão 57
Questão
57. In Memory Hierarchy, at the Outboard storage which of the following are included:
Responda
-
o Cache
-
o Main memory
-
o Magnetic tape
-
o Magnetic disk
Questão 58
Questão
58. In Memory Hierarchy, at the Off-line storage which of the following are included:
Responda
-
o Cache
-
o Magnetic disk
-
o Magnetic tape
-
o Main memory
Questão 59
Questão
59. In Memory Hierarchy, at the Inboard memory which of the following are included:
Responda
-
o Main memory
-
o Magnetic disk
-
o Magnetic tape
-
o Optical disk
Questão 60
Questão
60. Cache Design has these properties?
Responda
-
o Size, block size, mapping function, replacement algorithm, write policy
-
o Size, search function, write function, read policy, vector algorithm
-
o Size, mapping algorithm, vector function, write policy, replacement function
-
o Size, blocking algorithm, search function, replacement vector, read policy
Questão 61
Questão
61. Three techniques are possible for I/O operations:
Responda
-
o Programmed I/O, Interrupt-driven I/O, Direct memory access(DMA)
-
o Object-oriented I/O, Design I/O, Usable I/O
-
o Machine I/O, Architecture I/O, Hardware I/O
-
o Control I/O, Status I/O, Transfer I/O
Questão 62
Questão
62. How many principles has Deadlock?:
Responda
-
o 3
-
o 5
-
o 2
-
o 6
Questão 63
Questão
63. Which of the following principles has Deadlock?
Responda
-
o Prevention, Avoidance, Detection
-
o Execution, Association, Starvation
-
o Exclusion, Avoidance, Starvation
-
o Starvation, Detection, Exclusion
Questão 64
Questão
64. Much of the work in security and protection as it relates to operating systems can be roughly grouped into four categories?
Responda
-
o Availability, confidentiality, data integrity, authenticity
-
o Safety, accountability, reliability, density
-
o Usability, integrity, confidentiality, reliability
-
o Flexibility, availability, accountability, authenticity
Questão 65
Questão
65. The central themes of operating system design are all concerned with the management of processes and threads?
Responda
-
o Multiprogramming, multiprocessing, distributed processing
-
o Multitasking, multiprogramming, multithreading
-
o Multiprocessing, uniprocessing, multitasking
-
o Multithreading, distributed processing, uniprocessing
Questão 66
Questão
66. Which one of the following linux file system does not support journaling feture?
Responda
-
o ext2
-
o ext3
-
o ext4
-
o none of the mentioned
Questão 67
Questão
67. With the installation of Linux, a super user account is created called as _____
Responda
-
o Superuser
-
o User
-
o Administrator
-
o Root
Questão 68
Questão
68. Which command would you use if you want to remove the password assigned to a group?
Responda
-
o gpasswd – r
-
o gpasswd – d
-
o userdel
-
o delgroup
Questão 69
Questão
69. What command is used to remove files?
Responda
-
o Dm
-
o Rm
-
o Del
-
o Erase
-
o Wc
Questão 70
Questão
70. What command is used to remove the directory?
Responda
-
o Remove
-
o Rdir
-
o Mdir
-
o Delete
-
o Rmdir
Questão 71
Questão
71. Convert this number systems: BIN(1111000111) to DEC?
Responda
-
o 967
-
o 912
-
o 868
-
o 898
Questão 72
Questão
72. Convert this number systems: BIN(10101010101) to DEC?:
Responda
-
o 1365
-
o 1432
-
o 1295
-
o 1523
Questão 73
Questão
73. Convert this number systems: BIN(1100001100) to DEC?:
Responda
-
o 780
-
o 795
-
o 824
-
o 912
Questão 74
Questão
74. Convert this number systems: BIN(1111000111) to DEC?
Responda
-
o 967
-
o 912
-
o 868
-
o 898
Questão 75
Questão
75. Which of the following is not one of the principles of dealing with deadlock?
Responda
-
o Initialization
-
o Prevention
-
o Avoidance
-
o Detection
Questão 76
Questão
76. Current allocation of resources to processes where there is at least one sequence that does not result in deadlock is called:
Responda
-
o Safe state
-
o Unsafe state
-
o Ambiguous state
-
o Alternative state
Questão 77
Questão
77. Current allocation of resources to processes where there is no sequence that does not result in deadlock is called:
Responda
-
o Unsafe state
-
o Safe state
-
o Ambiguous state
-
o Alternative state
Questão 78
Questão
78. Can you solve the Dining Philosophers’ Problem using monitors?
Responda
-
o Yes
-
o No
-
o Yes, but only if there are less than five philosophers
-
o No, unless there are more than five philosophers
Questão 79
Questão
79. A fixed-length block of main memory is called:
Responda
-
o Frame
-
o Page
-
o Segment
-
o Section
Questão 80
Questão
80. A fixed-length block of data in secondary memory is called:
Responda
-
o Frame
-
o Page
-
o Segment
-
o Section
Questão 81
Questão
81. A variable-length block of data that resides in secondary memory is called:
Responda
-
o Frame
-
o Page
-
o Segment
-
o Section
Questão 82
Questão
82. When free memory is split into many unconnected pieces we call it:
Responda
-
o Internal fragmentation
-
o External fragmentation
-
o Compaction
-
o Memory distribution
Questão 83
Questão
83. Memory partitioning algorithm that uses binary tree as a data structure is called:
Responda
-
o First-fit algorithm
-
o Next-fit algorithm
-
o Buddy system
-
o Best-fit algorithm
Questão 84
Questão
84. A state in which the system spends most of its time swapping pieces rather than executing instructions is called:
Responda
-
o Virtual memory
-
o Thrashing
-
o Swapping
-
o Spanning
Questão 85
Questão
85. What command do you use to create Linux file systems?
Responda
-
o Fdisk
-
o Mkfs
-
o Fsck
-
o Mount
Questão 86
Questão
86. What command is not used to list the files chap01, chap02 and chap04?
Responda
-
o ls chap*
-
o ls chap[124]
-
o ls - x chap0[124]
-
o ls chap0[124]
Questão 87
Questão
87. What is operating system?
Responda
-
o collection of programs that manages hardware resources
-
o system service provider to the application programs
-
o link to interface the hardware and application programs
-
o all of the mentioned
Questão 88
Questão
88. The main function of the command interpreter is
Responda
-
o to get and execute the next user-specified command
-
o to provide the interface between the API and application program
-
o to handle the files in operating system
-
o none of the mentioned
Questão 89
Questão
89. To create a file
Responda
-
o allocate the space in file system
-
o make an entry for new file in directory
-
o both (a) and (b)
-
o none of the mentioned
Questão 90
Questão
90. What is a Server?
Responda
-
o is a computer program running to serve the requests of other programs, the "clients".
-
o Simple computer
-
o Optical device
-
o Types of laptops
Questão 91
Questão
91. Show incorrect choice, when we mean types of Server:
Responda
-
o Cooking server
-
o Database server
-
o Client server
-
o Application server
Questão 92
Questão
92. What is a Create file?
Responda
-
o When a new file is created, an entry must be added to the directory
-
o When a user or application references a file, the directory must be searched to find the entry corresponding to that file..
-
o When a file is deleted, an entry must be removed from the directory.
-
o All or a portion of the directory may be requested.
Questão 93
Questão
93. What is a Delete file?
Responda
-
o When a file is deleted, an entry must be removed from the directory
-
o When a user or application references a file, the directory must be searched to find the entry corresponding to that file..
-
o When a new file is created, an entry must be added to the directory.
-
o All or a portion of the directory may be requested.
Questão 94
Questão
94. Given the IP address 172.16.12.54 with a mask of 255.255.255.240, which of the following are valid host addresses on the different subnet?
Responda
-
o 172.16.12.64
-
o 172.16.12.57
-
o 172.16.12.49
-
o 172.16.12.48
-
o 172.16.12.63
-
o 172.16.12.45
Questão 95
Questão
95. You need to subnet a network that has 5 subnets, each with at least 16 hosts. Which classful subnet mask would you use?
Responda
-
o 255.255.255.192
-
o 255.255.255.224
-
o 255.255.255.240
-
o 255.255.255.248
Questão 96
Questão
96. Given the IP address 172.16.12.54 with a mask of 255.255.255.240, which of the following are valid broadcast addresses?
Responda
-
o 172.16.12.64
-
o 172.16.12.57
-
o 172.16.12.49
-
o 172.16.12.48
-
o 172.16.12.63
-
o 172.16.12.45
Questão 97
Questão
97. File type can be represented by
Responda
-
o file name
-
o file extension
-
o file identifier
-
o none of the mentioned
Questão 98
Questão
98. What does GNU stand for?
Responda
-
o GNU's not Unix
-
o Greek Needed Unix
-
o General Unix
-
o General Noble Unix
-
o None of the above
Questão 99
Questão
99. Which of the following is not a principle of storage management responsibilities?
Responda
-
o Process isolation
-
o Process termination
-
o Automatic allocation and management
-
o Protection and access control
Questão 100
Questão
100. Virtual memory takes advantage of
Responda
-
o Fast CPU
-
o Large secondary memory
-
o Modular programming
-
o Scheduling
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