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Final Exam 2015+

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Alexandre Pinheiro
Quiz por Alexandre Pinheiro, atualizado more than 1 year ago
Alexandre Pinheiro
Criado por Alexandre Pinheiro mais de 8 anos atrás
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Resumo de Recurso

Questão 1

Questão
Which of the following can be defined as the process of rerunning a portion of the test scenario or test plan to ensure that changes or corrections have not introduced new errors?
Responda
  • Unit testing
  • Parallel testing
  • Regression testing
  • Pilot testing

Questão 2

Questão
At which layer of the OSI model do sniffers operate?
Responda
  • Layer 2 - Data Link Layer
  • Layer 1 - Hardware layer
  • Layer 3 - Networking Layer
  • Layer 7 - Application layer

Questão 3

Questão
When two or more separate entities (usually persons) operating in concert to protect sensitive functions or information must combine their knowledge to gain access to an asset, this is known as?
Responda
  • Segragation of duties
  • Separation of duties
  • Need to know
  • Dual Control

Questão 4

Questão
What is the name for a substitution cipher that shifts the alphabet by 13 places?
Responda
  • Transposition cipher
  • Caesar cipher
  • Polyalphabetic cipher
  • ROT13 cipher

Questão 5

Questão
Your organization creates software applications that are sold to the public. Recently, management has become concerned about software piracy. Which organization deals with the prevention of this crime?
Responda
  • CIA
  • DoD
  • SPA
  • NCSC

Questão 6

Questão
A potential problem related to the physical installation of the Iris Scanner in regards to the usage of the iris pattern within a biometric system is:
Responda
  • Concern that the laser beam may cause eye damage.
  • The iris pattern changes as a person grows older.
  • There is a relatively high rate of false accepts.
  • The optical unit must be positioned so that the sun does not shine into the aperture.

Questão 7

Questão
In Mandatory Access Control, sensitivity labels attached to object contain what information?
Responda
  • The item's classification
  • The item's classification and category set
  • The item's category
  • The items's need to know

Questão 8

Questão
Which of the following is true about Kerberos?
Responda
  • It utilizes public key cryptography.
  • It encrypts data after a ticket is granted, but passwords are exchanged in plain text.
  • It depends upon symmetric ciphers.
  • It is a second party authentication system.

Questão 9

Questão
Which of the following is needed for System Accountability?
Responda
  • Audit mechanisms.
  • Documented design as laid out in the Common Criteria.
  • Authorization.
  • Formal verification of system design.

Questão 10

Questão
What is Kerberos?
Responda
  • A three-headed dog from the Egyptian mythology.
  • A trusted third-party authentication protocol.
  • A security model.
  • A remote authentication dial in user server.

Questão 11

Questão
Kerberos depends upon what encryption method?
Responda
  • Public Key cryptography.
  • Secret Key cryptography.
  • El Gamal cryptography.
  • Blowfish cryptography.

Questão 12

Questão
A confidential number used as an authentication factor to verify a user's identity is called a:
Responda
  • PIN
  • User ID
  • Password
  • Challenge

Questão 13

Questão
Individual accountability does not include which of the following?
Responda
  • unique identifiers
  • policies & procedures
  • access rules
  • audit trails

Questão 14

Questão
Which of the following exemplifies proper separation of duties?
Responda
  • Operators are not permitted modify the system time.
  • Programmers are permitted to use the system console.
  • Console operators are permitted to mount tapes and disks.
  • Tape operators are permitted to use the system console.

Questão 15

Questão
An access control policy for a bank teller is an example of the implementation of which of the following?
Responda
  • Rule-based policy
  • Identity-based policy
  • User-based policy
  • Role-based policy

Questão 16

Questão
Which one of the following authentication mechanisms creates a problem for mobile users?
Responda
  • Mechanisms based on IP addresses
  • Mechanism with reusable passwords
  • One-time password mechanism.
  • Challenge response mechanism.

Questão 17

Questão
Organizations should consider which of the following first before allowing external access to their LANs via the Internet?
Responda
  • Plan for implementing workstation locking mechanisms.
  • Plan for protecting the modem pool.
  • Plan for providing the user with his account usage information.
  • Plan for considering proper authentication options.

Questão 18

Questão
Kerberos can prevent which one of the following attacks?
Responda
  • Tunneling attack.
  • Playback (replay) attack.
  • Destructive attack.
  • Process attack.

Questão 19

Questão
In discretionary access environments, which of the following entities is authorized to grant information access to other people?
Responda
  • Manager
  • Group Leader
  • Security Manager
  • Data Owner

Questão 20

Questão
What is the main concern with single sign-on?
Responda
  • Maximum unauthorized access would be possible if a password is disclosed.
  • The security administrator's workload would increase.
  • The users' password would be too hard to remember.
  • User access rights would be increased.

Questão 21

Questão
Who developed one of the first mathematical models of a multilevel-security computer system?
Responda
  • Diffie and Hellman.
  • Clark and Wilson.
  • Bell and LaPadula.
  • Gasser and Lipner.

Questão 22

Questão
Which of the following attacks could capture network user passwords?
Responda
  • Data diddling
  • Sniffing
  • IP Spoofing
  • Smurfing

Questão 23

Questão
Which of the following would constitute the best example of a password to use for access to a system by a network administrator?
Responda
  • holiday
  • Christmas12
  • Jenny
  • GyN19Za!

Questão 24

Questão
What physical characteristic does a retinal scan biometric device measure?
Responda
  • The amount of light reaching the retina
  • The amount of light reflected by the retina
  • The pattern of light receptors at the back of the eye
  • The pattern of blood vessels at the back of the eye

Questão 25

Questão
The Computer Security Policy Model the Orange Book is based on is which of the following?
Responda
  • Bell-LaPadula
  • Data Encryption Standard
  • Kerberos
  • Tempest

Questão 26

Questão
The end result of implementing the principle of least privilege means which of the following?
Responda
  • Users would get access to only the info for which they have a need to know
  • Users can access all systems.
  • Users get new privileges added when they change positions.
  • Authorization creep.

Questão 27

Questão
Which of the following is the most reliable authentication method for remote access?
Responda
  • Variable callback system
  • Synchronous token
  • Fixed callback system
  • Combination of callback and caller ID

Questão 28

Questão
Which of the following is true of two-factor authentication?
Responda
  • It uses the RSA public-key signature based on integers with large prime factors.
  • It requires two measurements of hand geometry.
  • It does not use single sign-on technology.
  • It relies on two independent proofs of identity.

Questão 29

Questão
The primary service provided by Kerberos is which of the following?
Responda
  • non-repudiation
  • confidentiality
  • authentication
  • authorization

Questão 30

Questão
There are parallels between the trust models in Kerberos and Public Key Infrastructure (PKI). When we compare them side by side, Kerberos tickets correspond most closely to which of the following?
Responda
  • public keys
  • private keys
  • public-key certificates
  • private-key certificates

Questão 31

Questão
In which of the following security models is the subject's clearance compared to the object's classification such that specific rules can be applied to control how the subject-to-object interactions take place?
Responda
  • Bell-LaPadula model
  • Biba model
  • Access Matrix model
  • Take-Grant model

Questão 32

Questão
Which of the following was developed to address some of the weaknesses in Kerberos and uses public key cryptography for the distribution of secret keys and provides additional access control support?
Responda
  • SESAME
  • RADIUS
  • KryptoKnight
  • TACACS+

Questão 33

Questão
Single Sign-on (SSO) is characterized by which of the following advantages?
Responda
  • Convenience
  • Convenience and centralized administration
  • Convenience and centralized data administration
  • Convenience and centralized network administration

Questão 34

Questão
What is the primary role of smartcards in a PKI?
Responda
  • Transparent renewal of user keys
  • Easy distribution of the certificates between the users
  • Fast hardware encryption of the raw data
  • Tamper resistant, mobile storage and application of private keys of the users

Questão 35

Questão
What kind of certificate is used to validate a user identity?
Responda
  • Public key certificate
  • Attribute certificate
  • Root certificate
  • Code signing certificate

Questão 36

Questão
The following is not a security characteristic we need to consider while choosing a biometric identification systems:
Responda
  • data acquisition process
  • cost
  • enrollment process
  • speed and user interface

Questão 37

Questão
In biometric identification systems, at the beginning, it was soon apparent that truly positive identification could only be based on physical attributes of a person. This raised the necessity of answering 2 questions:
Responda
  • what was the sex of a person and his age
  • what part of body to be used and how to accomplish identification that is viable
  • what was the age of a person and his income level
  • what was the tone of the voice of a person and his habits

Questão 38

Questão
In biometric identification systems, the parts of the body conveniently available for identification are:
Responda
  • neck and mouth
  • hands, face, and eyes
  • feet and hair
  • voice and neck

Questão 39

Questão
Controlling access to information systems and associated networks is necessary for the preservation of their:
Responda
  • Authenticity, confidentiality and availability
  • Confidentiality, integrity, and availability.
  • integrity and availability.
  • authenticity, confidentiality, integrity and availability.

Questão 40

Questão
To control access by a subject (an active entity such as individual or process) to an object (a passive entity such as a file) involves setting up:
Responda
  • Access Rules
  • Access Matrix
  • Identification controls
  • Access terminal

Questão 41

Questão
Rule-Based Access Control (RuBAC) access is determined by rules. Such rules would fit within what category of access control?
Responda
  • Discretionary Access Control (DAC)
  • Mandatory Access control (MAC)
  • Non-Discretionary Access Control (NDAC)
  • Lattice-based Access control

Questão 42

Questão
The type of discretionary access control (DAC) that is based on an individual's identity is also called:
Responda
  • Identity-based Access control
  • Rule-based Access control
  • Non-Discretionary Access Control
  • Lattice-based Access control

Questão 43

Questão
Which access control type has a central authority that determine to what objects the subjects have access to and it is based on role or on the organizational security policy?
Responda
  • Mandatory Access Control
  • Discretionary Access Control
  • Non-Discretionary Access Control
  • Rule-based Access control

Questão 44

Questão
Which of the following control pairings include: organizational policies and procedures, pre- employment background checks, strict hiring practices, employment agreements, employee termination procedures, vacation scheduling, labeling of sensitive materials, increased supervision, security awareness training, behavior awareness, and sign-up procedures to obtain access to information systems and networks?
Responda
  • Preventive/Administrative Pairing
  • Preventive/Technical Pairing
  • Preventive/Physical Pairing
  • Detective/Administrative Pairing

Questão 45

Questão
Technical controls such as encryption and access control can be built into the operating system, be software applications, or can be supplemental hardware/software units. Such controls, also known as logical controls, represent which pairing?
Responda
  • Preventive/Administrative Pairing
  • Preventive/Technical Pairing
  • Preventive/Physical Pairing
  • Detective/Technical Pairing

Questão 46

Questão
What is called the use of technologies such as fingerprint, retina, and iris scans to authenticate the individuals requesting access to resources?
Responda
  • Micrometrics
  • Macrometrics
  • Biometrics
  • MicroBiometrics

Questão 47

Questão
What is called the access protection system that limits connections by calling back the number of a previously authorized location?
Responda
  • Sendback systems
  • Callback forward systems
  • Callback systems
  • Sendback forward systems

Questão 48

Questão
What are called user interfaces that limit the functions that can be selected by a user?
Responda
  • Constrained user interfaces
  • Limited user interfaces
  • Mini user interfaces
  • Unlimited user interfaces

Questão 49

Questão
Controls such as job rotation, the sharing of responsibilities, and reviews of audit records are associated with:
Responda
  • Preventive/physical
  • Detective/technical
  • Detective/physical
  • Detective/administrative

Questão 50

Questão
The control measures that are intended to reveal the violations of security policy using software and hardware are associated with:
Responda
  • Preventive/physical
  • Detective/technical
  • Detective/physical
  • Detective/administrative

Questão 51

Questão
The controls that usually require a human to evaluate the input from sensors or cameras to determine if a real threat exists are associated with:
Responda
  • Preventive/physical
  • Detective/technical
  • Detective/physical
  • Detective/administrative

Questão 52

Questão
External consistency ensures that the data stored in the database is:
Responda
  • in-consistent with the real world.
  • remains consistant when sent from one system to another.
  • consistent with the logical world.
  • consistent with the real world.

Questão 53

Questão
A central authority determines what subjects can have access to certain objects based on the organizational security policy is called:
Responda
  • Mandatory Access Control
  • Discretionary Access Control
  • Non-Discretionary Access Control
  • Rule-based Access control

Questão 54

Questão
What is called the act of a user professing an identity to a system, usually in the form of a log-on ID?
Responda
  • Authentication
  • Identification
  • Authorization
  • Confidentiality

Questão 55

Questão
Which one of the following factors is not one on which Authentication is based?
Responda
  • Type 1 Something you know, such as a PIN or password
  • Type 2 Something you have, such as an ATM card or smart card
  • Type 3 Something you are (based upon one or more intrinsic physical or behavioral traits), such as a fingerprint or retina scan
  • Type 4 Something you are, such as a system administrator or security administrator

Questão 56

Questão
A central authority determines what subjects can have access to certain objects based on the organizational security policy is called:
Responda
  • Mandatory Access Control
  • Discretionary Access Control
  • Non-Discretionary Access Control
  • Rule-based Access control

Questão 57

Questão
What is called the act of a user professing an identity to a system, usually in the form of a log-on ID?
Responda
  • Authentication
  • Identification
  • Authorization
  • Confidentiality

Questão 58

Questão
What is called the verification that the user's claimed identity is valid and is usually implemented through a user password at log-on time?
Responda
  • Authentication
  • Identification
  • Integrity
  • Confidentiality

Questão 59

Questão
Which one of the following factors is not one on which Authentication is based?
Responda
  • Type 1 Something you know, such as a PIN or password
  • Type 2 Something you have, such as an ATM card or smart card
  • Type 3 Something you are (based upon one or more intrinsic physical or behavioral traits), such as a fingerprint or retina scan
  • Type 4 Something you are, such as a system administrator or security administrator

Questão 60

Questão
The act of requiring two of the three factors to be used in the authentication process refers to:
Responda
  • Two-Factor Authentication
  • One-Factor Authentication
  • Bi-Factor Authentication
  • Double Authentication

Questão 61

Questão
Which type of password provides maximum security because a new password is required for each new log-on?
Responda
  • One-time or dynamic password
  • Congnitive password
  • Static password
  • Passphrase

Questão 62

Questão
What is called a password that is the same for each log-on session?
Responda
  • "one-time password"
  • "two-time password"
  • static password
  • dynamic password

Questão 63

Questão
What is called a sequence of characters that is usually longer than the allotted number for a password?
Responda
  • passphrase
  • cognitive phrase
  • anticipated phrase
  • Real phrase

Questão 64

Questão
Which best describes a tool (i.e. keyfob, calculator, memory card or smart card) used to supply dynamic passwords?
Responda
  • Tickets
  • Tokens
  • Token passing networks
  • Coupons

Questão 65

Questão
Which of the following would be true about Static password tokens?
Responda
  • The owner identity is authenticated by the token
  • The owner will never be authenticated by the token.
  • The owner will authenticate himself to the system
  • The token does not authenticates the token owner but the system

Questão 66

Questão
In Synchronous dynamic password tokens:
Responda
  • The token generates a new password value at fixed time intervals (this password could be based on the time of day encrypted with a secret key).
  • The token generates a new non-unique password value at fixed time intervals (this password could be based on the time of day encrypted with a secret key).
  • The unique password is not entered into a system or workstation along with an owner's PIN.
  • The authentication entity in a system or workstation knows an owner's secret key and PIN, and the entity verifies that the entered password is invalid and that it was entered during the invalid time window

Questão 67

Questão
In biometrics, "one-to-many" search against database of stored biometric images is done in:
Responda
  • Authentication
  • Identification
  • Identities
  • Identity-based access control

Questão 68

Questão
Which of the following is true of biometrics?
Responda
  • It is used for identification in physical controls and it is not used in logical controls
  • It is used for authentication in physical controls and for identification in logical controls
  • It is used for identification in physical controls and for authentication in logical controls.
  • Biometrics has not role in logical controls.

Questão 69

Questão
What is called the percentage of valid subjects that are falsely rejected by a Biometric Authentication system?
Responda
  • False Rejection Rate (FRR) or Type I Error
  • False Acceptance Rate (FAR) or Type II Error
  • Crossover Error Rate (CER)
  • True Rejection Rate (TRR) or Type III Error

Questão 70

Questão
What is called the percentage of invalid subjects that are falsely accepted by a Biometric authentication system?
Responda
  • False Rejection Rate (FRR) or Type I Error
  • False Acceptance Rate (FAR) or Type II Error
  • Crossover Error Rate (CER)
  • True Acceptance Rate (TAR) or Type III Error

Questão 71

Questão
What is called the percentage at which the False Rejection Rate equals the False Acceptance Rate?
Responda
  • False Rejection Rate (FRR) or Type I Error
  • False Acceptance Rate (FAR) or Type II Error
  • Crossover Error Rate (CER)
  • Failure to enroll rate (FTE or FER)

Questão 72

Questão
Considerations of privacy, invasiveness, and psychological and physical comfort when using the system are important elements for which of the following?
Responda
  • Accountability of biometrics systems
  • Acceptability of biometrics systems
  • Availability of biometrics systems
  • Adaptability of biometrics systems

Questão 73

Questão
Which of the following offers advantages such as the ability to use stronger passwords, easier password administration, one set of credential, and faster resource access?
Responda
  • Smart cards
  • Single Sign-On (SSO)
  • Symmetric Ciphers
  • Public Key Infrastructure (PKI)

Questão 74

Questão
Which of the following describes the major disadvantage of many Single Sign-On (SSO) implementations?
Responda
  • Once an individual obtains access to the system through the initial log-on, they have access to all resources within the environment that the account has access to.
  • The initial logon process is cumbersome to discourage potential intruders.
  • Once a user obtains access to the system through the initial log-on, they only need to logon to some applications.
  • Once a user obtains access to the system through the initial log-on, he has to logout from all other systems

Questão 75

Questão
Which of the following is implemented through scripts or smart agents that replays the users multiple log-ins against authentication servers to verify a user's identity which permit access to system services?
Responda
  • Single Sign-On
  • Dynamic Sign-On
  • Smart cards
  • Kerberos

Questão 76

Questão
Which of the following is not true of the Kerberos protocol?
Responda
  • Only a single login is required per session.
  • The initial authentication steps are done using public key algorithm
  • The KDC is aware of all systems in the network and is trusted by all of them
  • It performs mutual authentication

Questão 77

Questão
The authenticator within Kerberos provides a requested service to the client after validating which of the following?
Responda
  • timestamp
  • client public key
  • client private key
  • server public key

Questão 78

Questão
Which of the following is addressed by Kerberos?
Responda
  • Confidentiality and Integrity
  • Authentication and Availability
  • Validation and Integrity
  • Auditability and Integrity

Questão 79

Questão
Kerberos is vulnerable to replay in which of the following circumstances?
Responda
  • When a private key is compromised within an allotted time window
  • When a public key is compromised within an allotted time window.
  • When a ticket is compromised within an allotted time window.
  • When the KSD is compromised within an allotted time window.

Questão 80

Questão
Like the Kerberos protocol, SESAME is also subject to which of the following?
Responda
  • timeslot replay
  • password guessing
  • symmetric key guessing
  • asymmetric key guessing

Questão 81

Questão
RADIUS incorporates which of the following services?
Responda
  • Authentication server and PIN codes.
  • Authentication of clients and static passwords generation.
  • Authentication of clients and dynamic passwords generation.
  • Authentication server as well as support for Static and Dynamic passwords.

Questão 82

Questão
Which of the following protects a password from eavesdroppers and supports the encryption of communication?
Responda
  • Challenge Handshake Authentication Protocol (CHAP)
  • Challenge Handshake Identification Protocol (CHIP)
  • Challenge Handshake Encryption Protocol (CHEP)
  • Challenge Handshake Substitution Protocol (CHSP)

Questão 83

Questão
Which of the following represents the columns of the table in a relational database?
Responda
  • attributes
  • relation
  • record retention
  • records or tuples

Questão 84

Questão
A database view is the results of which of the following operations?
Responda
  • Join and Select.
  • Join, Insert, and Project
  • Join, Project, and Create.
  • Join, Project, and Select.

Questão 85

Questão
Which of the following is used to create and modify the structure of your tables and other objects in the database?
Responda
  • SQL Data Definition Language (DDL)
  • SQL Data Manipulation Language (DML)
  • SQL Data Relational Language (DRL)
  • SQL Data Identification Language (DIL)

Questão 86

Questão
Which of the following is used to monitor network traffic or to monitor host audit logs in real time to determine violations of system security policy that have taken place?
Responda
  • Intrusion Detection System
  • Compliance Validation System
  • Intrusion Management System (IMS)
  • Compliance Monitoring System

Questão 87

Questão
Which of the following monitors network traffic in real time?
Responda
  • network-based IDS
  • host-based IDS
  • application-based IDS
  • firewall-based IDS

Questão 88

Questão
A host-based IDS is resident on which of the following?
Responda
  • On each of the critical hosts
  • decentralized hosts
  • central hosts
  • bastion hosts

Questão 89

Questão
Which of the following usually provides reliable, real-time information without consuming network or host resources?
Responda
  • network-based IDS
  • host-based IDS
  • application-based IDS
  • firewall-based IDS

Questão 90

Questão
The fact that a network-based IDS reviews packets payload and headers enable which of the following?
Responda
  • Detection of denial of service
  • Detection of all viruses
  • Detection of data corruption
  • Detection of all password guessing attacks

Questão 91

Questão
Which of the following reviews system and event logs to detect attacks on the host and determine if the attack was successful?
Responda
  • host-based IDS
  • firewall-based IDS
  • bastion-based IDS
  • server-based IDS

Questão 92

Questão
What would be considered the biggest drawback of Host-based Intrusion Detection systems (HIDS)?
Responda
  • It can be very invasive to the host operating system
  • Monitors all processes and activities on the host system only
  • Virtually eliminates limits associated with encryption
  • They have an increased level of visibility and control compared to NIDS

Questão 93

Questão
Attributes that characterize an attack are stored for reference using which of the following Intrusion Detection System (IDS)?
Responda
  • signature-based IDS
  • statistical anomaly-based IDS
  • event-based IDS
  • inferent-based IDS

Questão 94

Questão
Which of the following is an issue with signature-based intrusion detection systems?
Responda
  • Only previously identified attack signatures are detected.
  • Signature databases must be augmented with inferential elements.
  • It runs only on the windows operating system
  • Hackers can circumvent signature evaluations.

Questão 95

Questão
Which of the following is an IDS that acquires data and defines a "normal" usage profile for the network or host?
Responda
  • Statistical Anomaly-Based ID
  • Signature-Based ID
  • dynamical anomaly-based ID
  • inferential anomaly-based ID

Questão 96

Questão
Which of the following is most relevant to determining the maximum effective cost of access control?
Responda
  • the value of information that is protected
  • management's perceptions regarding data importance
  • budget planning related to base versus incremental spending
  • the cost to replace lost data

Questão 97

Questão
Which of the following is not a factor related to Access Control?
Responda
  • integrity
  • authenticity
  • confidentiality
  • availability

Questão 98

Questão
Which of the following is most appropriate to notify an external user that session monitoring is being conducted?
Responda
  • Logon Banners
  • Wall poster
  • Employee Handbook
  • Written agreement

Questão 99

Questão
Which of the following pairings uses technology to enforce access control policies?
Responda
  • Preventive/Administrative
  • Preventive/Technical
  • Preventive/Physical
  • Detective/Administrative

Questão 100

Questão
In the course of responding to and handling an incident, you work on determining the root cause of the incident. In which step are you in?
Responda
  • Recovery
  • Containment
  • Triage
  • Analysis and tracking

Questão 101

Questão
Access control is the collection of mechanisms that permits managers of a system to exercise a directing or restraining influence over the behavior, use, and content of a system. It does not permit management to:
Responda
  • specify what users can do
  • specify which resources they can access
  • specify how to restrain hackers
  • specify what operations they can perform on a system

Questão 102

Questão
Access Control techniques do not include which of the following choices?
Responda
  • Relevant Access Controls
  • Discretionary Access Control
  • Mandatory Access Control
  • Lattice Based Access Control

Questão 103

Questão
Which of the following statements relating to the Bell-LaPadula security model is false (assuming the Strong Star property is not being used)?
Responda
  • A subject is not allowed to read up
  • The *- property restriction can be escaped by temporarily downgrading a high level subject.
  • A subject is not allowed to read down
  • It is restricted to confidentiality

Questão 104

Questão
When a biometric system is used, which error type deals with the possibility of granting access to impostors who should be rejected?
Responda
  • Type I error
  • Type II error
  • Type III error
  • Crossover error

Questão 105

Questão
Which of the following is the FIRST step in protecting data's confidentiality?
Responda
  • Install a firewall
  • Implement encryption
  • Identify which information is sensitive
  • Review all user access rights

Questão 106

Questão
Which of the following best ensures accountability of users for the actions taken within a system or domain?
Responda
  • Identification
  • Authentication
  • Authorization
  • Credentials

Questão 107

Questão
Which of the following statements pertaining to biometrics is false?
Responda
  • User can be authenticated based on behavior.
  • User can be authenticated based on unique physical attributes.
  • User can be authenticated by what he knows.
  • A biometric system's accuracy is determined by its crossover error rate (CER).

Questão 108

Questão
Which of the following biometric devices offers the LOWEST CER?
Responda
  • Keystroke dynamics
  • Voice verification
  • Iris scan
  • Fingerprint

Questão 109

Questão
Which of the following is the weakest authentication mechanism?
Responda
  • Passphrases
  • Passwords
  • One-time passwords
  • Token devices

Questão 110

Questão
Which of the following statements pertaining to access control is false?
Responda
  • Users should only access data on a need-to-know basis.
  • If access is not explicitly denied, it should be implicitly allowed.
  • Access rights should be granted based on the level of trust a company has on a subject.
  • Roles can be an efficient way to assign rights to a type of user who performs certain tasks.

Questão 111

Questão
Which of the following is not part of the Kerberos authentication protocol?
Responda
  • Symmetric key cryptography
  • Authentication service (AS)
  • Principals
  • Public Key

Questão 112

Questão
Which access control model enables the owner of the resource to specify what subjects can access specific resources based on their identity?
Responda
  • Discretionary Access Control
  • Mandatory Access Control
  • Sensitive Access Control
  • Role-based Access Control

Questão 113

Questão
Which of the following access control models is based on sensitivity labels?
Responda
  • Discretionary access contro
  • Mandatory access control
  • Rule-based access control
  • Role-based access control

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