3D152 CDC Vol 2 Ure

93 Questions | Total Attempts: 13

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3D152 Quizzes & Trivia

3D152 CDC Vol 2 URE all questions multiple choice. Correct answers


Questions and Answers
  • 1. 
    What happens when more bits are added to a digital signal arranged in a sequence understood by the sender and receiver?
    • A. 

      A code set is established

    • B. 

      A word is created

    • C. 

      An octet is formed

    • D. 

      Nothing

  • 2. 
    How many possible symbols can 4 bits represent?
    • A. 

      2

    • B. 

      4

    • C. 

      8

    • D. 

      16

  • 3. 
    In networking, a byte is defined as a/an
    • A. 

      Bit

    • B. 

      Word

    • C. 

      Octet

    • D. 

      Letter

  • 4. 
    Which organization sets important computer networking wiring standards for residential and commercial network cabling?
    • A. 

      EIA

    • B. 

      TIA

    • C. 

      ANSI

    • D. 

      NIST

  • 5. 
    What Electronic Industries Alliance (EIA)/Telecommunications Industry Association (TIA) standard is used for commercially building telecommunications cabling?
    • A. 

      568A

    • B. 

      569A

    • C. 

      570A

    • D. 

      606A

  • 6. 
    Which of the following is an International Telecommunications union (ITU) standardized format used for digital telecommunications services backbone system?
    • A. 

      E-carrier

    • B. 

      Structured query language

    • C. 

      International Organization for Standardization

    • D. 

      American Standard Code for Information Interchange

  • 7. 
    There is world wide nonprofit association of technical professionals that promotes the development of standards called the
    • A. 

      IETF

    • B. 

      IEEE

    • C. 

      ETSI

    • D. 

      ICANN

  • 8. 
    A collection of standards for local area network (LAN) architectures, protocols, and technologies called project 802 were developed by the
    • A. 

      IETF

    • B. 

      IEEE

    • C. 

      ETSI

    • D. 

      ICANN

  • 9. 
    The parent organization, headquartered in Geneva, Switzerland, for all other telecommunications organizations is the
    • A. 

      IETF

    • B. 

      ITU

    • C. 

      IEEE

    • D. 

      CCITT

  • 10. 
    What organization is responsible for the X-series and V-series standards?
    • A. 

      IETF

    • B. 

      ITU

    • C. 

      IEEE

    • D. 

      ITU-T

  • 11. 
    Which series of standards are recommended for data transmission using the telephone network
    • A. 

      T

    • B. 

      V

    • C. 

      X

    • D. 

      Z

  • 12. 
    The definition of Open System Interconnect(OSI) reference model was a major contribution to networking made by the
    • A. 

      IETF

    • B. 

      ITU

    • C. 

      ISO

    • D. 

      IEEE

  • 13. 
    Within how many feet of the data communications equipment (DCE) connection does the Electronics Industries Alliance (EIA) RS-232-C standard prescribes bipolar-voltage serial data transmission?
    • A. 

      25

    • B. 

      50

    • C. 

      100

    • D. 

      200

  • 14. 
    Which Electronics Industries Alliance (EIA) interface standard has the ability to work in either balanced or unbalanced electrical circuits?
    • A. 

      RS-232-C

    • B. 

      RS-423

    • C. 

      RS-485

    • D. 

      RS-530

  • 15. 
    What transmission rates does Electronic Industries Alliance (EIA) RS-530 accommodate?
    • A. 

      20 kilobits per second (Kbps) to 200 Kbps

    • B. 

      20 Kbps to 2 megabits per second (Mbps)

    • C. 

      20 Kbps to 20 Mbps

    • D. 

      20 Kbps to 22 Mbps

  • 16. 
    What two sublayers did the Institute of Electrical and Electronics Engineers (IEEE) divide the Open System Interconnect (OSI) data link layers into?
    • A. 

      HDLC and SDLC

    • B. 

      LLC and MAC

    • C. 

      DCE and DTE

    • D. 

      EIA RS-232 and RS-530

  • 17. 
    At what OSI layer are common data compression and encryption schemes used?
    • A. 

      Application

    • B. 

      Session

    • C. 

      Presentation

    • D. 

      Transport

  • 18. 
    What OSI layer is closest to the end user?
    • A. 

      Application

    • B. 

      Session

    • C. 

      Presentation

    • D. 

      Transport

  • 19. 
    In the OSI model, a layer will communicate with three other OSI layers. Which is not one of those layers?
    • A. 

      Layer Above

    • B. 

      Layer below

    • C. 

      Lowest Layer

    • D. 

      Peer Layer

  • 20. 
    Which information unit, whose source and destination are network-layer entities , uses connectionless network service?
    • A. 

      Frame

    • B. 

      Packet

    • C. 

      Segment

    • D. 

      Datagram

  • 21. 
    What data communications protocol is used to govern the flow and format of information between systems?
    • A. 

      Character-oriented

    • B. 

      Bit-oriented

    • C. 

      Routing

    • D. 

      Network

  • 22. 
    In binary-synchronous protocol, what character is used to establish and maintain character synchronization prior to the message block and during transmission?
    • A. 

      SEQ

    • B. 

      SYN

    • C. 

      STX

    • D. 

      EST

  • 23. 
    What data communication protocol is based on bits and the position of the bits?
    • A. 

      Character-oriented

    • B. 

      Bit-oriented

    • C. 

      Routing

    • D. 

      Network

  • 24. 
    What data communications protocol ensures that the receiving station can distinguish information from garbage?
    • A. 

      Asynchronous protocol

    • B. 

      Binary synchronous protocol

    • C. 

      SDLC

    • D. 

      HDLC

  • 25. 
    A group of computers and associated devices that share a common communications line within a small geographic area is a
    • A. 

      MAN

    • B. 

      LAN

    • C. 

      WAN

    • D. 

      VPN

  • 26. 
    The interconnection of several networks in a city into a single larger network is a
    • A. 

      LAN

    • B. 

      WAN

    • C. 

      VPN

    • D. 

      MAN

  • 27. 
    What types of network connects networks that are typically separated by geographical distances?
    • A. 

      LAN

    • B. 

      WAN

    • C. 

      VPN

    • D. 

      MAN

  • 28. 
    What type of network enables a group of two or more computer systems to communicate over the public internet?
    • A. 

      LAN

    • B. 

      WAN

    • C. 

      VPN

    • D. 

      MAN

  • 29. 
    Which type of network enables users to share resources, files and printers in a decentralized way?
    • A. 

      Intranet

    • B. 

      Extranet

    • C. 

      Peer-to-peer

    • D. 

      Client-server

  • 30. 
    What Network layer protocol provides information about how and where data should be delivered, including the data's source and destination addresses?
    • A. 

      IP

    • B. 

      ARP

    • C. 

      RARP

    • D. 

      ICMP

  • 31. 
    Which network layer protocol matches a known IP address for a destination device to a MAC address?
    • A. 

      IP

    • B. 

      ARP

    • C. 

      RARP

    • D. 

      ICMP

  • 32. 
    Which network layer protocol provides the IP address for a device that knows its own MAC address?
    • A. 

      IP

    • B. 

      ARP

    • C. 

      RARP

    • D. 

      ICMP

  • 33. 
    Which transport layer protocol does not guarantee that packets will be received at all?
    • A. 

      IP

    • B. 

      UDP

    • C. 

      TCP

    • D. 

      ICMP

  • 34. 
    Which application layer protocol is used to send and receive files by way of TCP/IP?
    • A. 

      FTP

    • B. 

      TFTP

    • C. 

      SMTP

    • D. 

      HTTP

  • 35. 
    Which protocol is simpler than FTP when transferring files between computers?
    • A. 

      FTP

    • B. 

      TFTP

    • C. 

      SMTP

    • D. 

      HTTP

  • 36. 
    Which application layer protocol is a terminal emulation being used to log on to remote hosts?
    • A. 

      Teletype Network

    • B. 

      TFTP

    • C. 

      SMTP

    • D. 

      HTTP

  • 37. 
    Which Application layer protocol is an automated means of assigning a unique IP address to every device on a network?
    • A. 

      DHCP

    • B. 

      TFTP

    • C. 

      SMTP

    • D. 

      HTTP

  • 38. 
    Which application layer protocol is a utility that can verify that TCP/IP is installed and communicating with the network?
    • A. 

      DHCP

    • B. 

      NTP

    • C. 

      FTP

    • D. 

      Ping

  • 39. 
    The physical address of any device on the network is a/an
    • A. 

      IPv4 address

    • B. 

      IPv6 address

    • C. 

      IP address

    • D. 

      MAC address

  • 40. 
    What are the two parts to an IPv4 address?
    • A. 

      Network and Host

    • B. 

      Network and class

    • C. 

      Class and host

    • D. 

      Network and octet

  • 41. 
    What is used on a TCP/IP network to determine which network a computer is on?
    • A. 

      Subnet host

    • B. 

      Subnet network

    • C. 

      Subnet mask

    • D. 

      Host mask

  • 42. 
    How many subnet bits are required to support 90 subnets on a class B network?
    • A. 

      Three

    • B. 

      Five

    • C. 

      Seven

    • D. 

      Nine

  • 43. 
    How many bits are available for host bits on a class B network using 7 bits?
    • A. 

      Three

    • B. 

      Five

    • C. 

      Seven

    • D. 

      Nine

  • 44. 
    What is not a recommendation for planning networks using variable length subnet masking (VLSM)?
    • A. 

      Start with the shortest mask

    • B. 

      Re-address the entire network

    • C. 

      Aim to use contiguous subnets where possible

    • D. 

      Choose one or more available subnets and subnet further

  • 45. 
    What mechanism allows for easier IPv6 address allocations?
    • A. 

      Auto-sense

    • B. 

      Auto negotiation

    • C. 

      Auto configuration

    • D. 

      Auto summarization

  • 46. 
    Which one of the following is not an IPv6 transition approach?
    • A. 

      Translation

    • B. 

      Tunneling

    • C. 

      Dual Stack

    • D. 

      Auto configuration

  • 47. 
    Which IPv6 tunneling approach attempts to solve the issue of IPv6 to IPv4, IP protocol 41 issue?
    • A. 

      6to4

    • B. 

      Teredo

    • C. 

      Tunnel Broker

    • D. 

      ISATAP

  • 48. 
    Teredo has four tunneling components. Which one is not one of them?
    • A. 

      Teredo host-specific relay

    • B. 

      Teredo client

    • C. 

      Teredo server

    • D. 

      Teredo agent

  • 49. 
    The combination transmitter/receiver device, in a single package, is called a
    • A. 

      Transceiver

    • B. 

      Repeater

    • C. 

      Router

    • D. 

      Hub

  • 50. 
    What device provides the physical, electrical, and electronic connections to the network media?
    • A. 

      Bridge

    • B. 

      Router

    • C. 

      Gateway

    • D. 

      Network interface card (NIC)

  • 51. 
    What layers of the OSI model do network interface cards (NIC) belong?
    • A. 

      Data Link and Network layers

    • B. 

      Physical and Network Layers

    • C. 

      Physical and Data Link Layers

    • D. 

      Physical, Data Link, and Network layers

  • 52. 
    A repeater with more than one output port is a
    • A. 

      Hub

    • B. 

      Bridge

    • C. 

      Gateway

    • D. 

      Brouter

  • 53. 
    What can be used to extend the size of a network?
    • A. 

      Brouter

    • B. 

      Gateway

    • C. 

      Active hubs

    • D. 

      Passive hubs

  • 54. 
    What device subdivides a network into smaller logical pieces, or segments?
    • A. 

      Switch

    • B. 

      Brouter

    • C. 

      Gateway

    • D. 

      Repeater

  • 55. 
    The time it takes a switch to figure out where to forward a data unit is called
    • A. 

      Lag

    • B. 

      Hop

    • C. 

      Latency

    • D. 

      Time zone

  • 56. 
    Which device has multiport connectivity that directs data between nodes on a network?
    • A. 

      Switch

    • B. 

      Router

    • C. 

      Gateway

    • D. 

      Repeater

  • 57. 
    A router's strength is its
    • A. 

      Intelligence

    • B. 

      Quality of service

    • C. 

      Different interface cards

    • D. 

      Different types of network connectors.

  • 58. 
    What is the oldest routing protocol?
    • A. 

      BGP

    • B. 

      OSPF

    • C. 

      RIP

    • D. 

      EIGRP

  • 59. 
    Which routing protocol does internet backbones use?
    • A. 

      BGP

    • B. 

      OSPF

    • C. 

      RIP

    • D. 

      EIGRP

  • 60. 
    What type of gateway can restrict the kind of access local area network (LAN) users have to the internet and vice versa?
    • A. 

      Voice/data

    • B. 

      Internet

    • C. 

      LAN

    • D. 

      Firewall

  • 61. 
    What type of gateway might include remote access servers that allow dial-up connectivity to a local area network (LAN)?
    • A. 

      Voice/data

    • B. 

      Internet

    • C. 

      LAN

    • D. 

      Firewall

  • 62. 
    Virtual private network (VPN) allow the AF to extend network resources across a/an
    • A. 

      DoD Network

    • B. 

      Air Force network

    • C. 

      Wide area network

    • D. 

      Public network

  • 63. 
    Which of the following is not a function that a VPN concentrator performs?
    • A. 

      Manages data transfer across the tunnel

    • B. 

      Encrypts and decrypts data

    • C. 

      Establishes tunnels

    • D. 

      Encapsulates data

  • 64. 
    What cable discrepancies can a Time-domain reflectometer (TDR) detect?
    • A. 

      Open, shorts, and bad grounds

    • B. 

      Pinholes, shorts, and bad grounds

    • C. 

      Shorts, kinks, and low cable pressure

    • D. 

      Kinks, opens, and corrode connectors

  • 65. 
    What type of cable property changes does a TDR detect to identify problems?
    • A. 

      Conductance

    • B. 

      Inductance

    • C. 

      Impedance

    • D. 

      Capacitance

  • 66. 
    When using and optical time-domain reflectometer (OTDR), what action is suggested by most manufacturers to prevent false readings?
    • A. 

      Connect a launch cable between the test set and the cable being tested

    • B. 

      Connect an injector at the end of cable being tested.

    • C. 

      Set the range for maximum reading.

    • D. 

      Use the frequency mode

  • 67. 
    A cable scanner wire-map display identifies crossover and straight-through cables by
    • A. 

      Displaying opens, shorts, and split pairs

    • B. 

      Providing wiring maps at both ends of the cable

    • C. 

      Monitoring and providing access to conductors

    • D. 

      Measuring current, frequency, and resistance

  • 68. 
    • A. 

      Digital distortion analyzer

    • B. 

      Protocol analyzer

    • C. 

      Communications test set

    • D. 

      Data analysis center

  • 69. 
    Which component of a protocol analyzer discards frames based on its definition or activates
    • A. 

      Counter

    • B. 

      Buffer

    • C. 

      CPU

    • D. 

      Filter

  • 70. 
    What components of a protocol analyzer processes the frames based on the selected test and the user configuration inputs?
    • A. 

      Counter

    • B. 

      Buffer

    • C. 

      CPU

    • D. 

      Filter

  • 71. 
    What protocol analyzer feature automatically runs in the background when the protocol analyzer application is activated?
    • A. 

      MAC node statistics

    • B. 

      Connection statistics

    • C. 

      Protocol statistics

    • D. 

      Node discovery

  • 72. 
    What protocol analyzer utility is used to determine if a network node is connected or responding?
    • A. 

      Trace Route

    • B. 

      Ping

    • C. 

      Who is

    • D. 

      ARP

  • 73. 
    What protocol analyzer utility is used to see the path that packets are traveling and the time it takes the packets to complete the trip?
    • A. 

      Trace Route

    • B. 

      Ping

    • C. 

      Who is

    • D. 

      ARP

  • 74. 
    A Management Information Base (MIB) can be identified by either its object name or its object what?
    • A. 

      Descriptor

    • B. 

      Character

    • C. 

      Number

    • D. 

      Trait

  • 75. 
    A Simple Network Management Protocol (SNMP) has three components: a managed device, an agent, and a
    • A. 

      NMS

    • B. 

      MIB

    • C. 

      Monitor screen

    • D. 

      Threshold

  • 76. 
    Which of the following is not a basic SNMP command?
    • A. 

      Write

    • B. 

      Read

    • C. 

      Trap

    • D. 

      Get

  • 77. 
    Which network management function provides the capability to initialize, operate shut down managed devices?
    • A. 

      Fault

    • B. 

      Accounting

    • C. 

      Performance

    • D. 

      Configuration

  • 78. 
    Which network management functions obtains the utilization and error rates of network devices and provides statistical data about the network?
    • A. 

      Fault

    • B. 

      Accounting

    • C. 

      Performance

    • D. 

      Configuration

  • 79. 
    The community name that is used with the NMS authenticates
    • A. 

      SNMP requests

    • B. 

      TCP requests

    • C. 

      SMTP requests

    • D. 

      FTP requests

  • 80. 
    What defines the format and type of data in a NMS report?
    • A. 

      Grapher template

    • B. 

      Report template

    • C. 

      Grapher tool

    • D. 

      Report tool

  • 81. 
    What process provides the overall process to secure and protect our information networks?
    • A. 

      Barrier Reef

    • B. 

      Defense in Depth

    • C. 

      CITS/BIP

    • D. 

      Joint Vision 2010

  • 82. 
    What defines traffic flow and is a basic protection mechanism on routers?
    • A. 

      Telnet

    • B. 

      Access lists

    • C. 

      Hypertext Transfer protocol session

    • D. 

      Virtual Local Area Networks

  • 83. 
    The World Wide Web (WWW) proxy provides three benefits: it conceals the internal network configuration, provides a means to monitor and eliminate traffic to unofficial WWW sites and
    • A. 

      Allows for limited WWW access because it is so restrictive

    • B. 

      Allows web pages to download in a considerably less time.

    • C. 

      Provides much faster access to the internet

    • D. 

      You see the same sites over again since it caches pages

  • 84. 
    What is one of the primary functions of the Network Control Center (NCC), usually done in real time, and ensures the system is being operated within the parameters established by network security policy?
    • A. 

      Packet filtering

    • B. 

      System auditing

    • C. 

      System monitoring

    • D. 

      Information protection

  • 85. 
    What security posture permits everything that is not specifically blocked?
    • A. 

      Default deny

    • B. 

      Default allow

    • C. 

      Close

    • D. 

      Open

  • 86. 
    What security posture prevents everything that is not specifically authorized?
    • A. 

      Default deny

    • B. 

      Default block

    • C. 

      Close

    • D. 

      Open

  • 87. 
    What is the first line of defense when gaining access to a laptop computer's operating system?
    • A. 

      Physical security

    • B. 

      Information condition

    • C. 

      Logon identification and password combination

    • D. 

      File share level of effective permissions.

  • 88. 
    Who has unrestricted access to system commands and data?
    • A. 

      Powerusers

    • B. 

      Superusers

    • C. 

      Server operators

    • D. 

      Backup operators

  • 89. 
    What must be employed to ensure data integrity?
    • A. 

      Check sums

    • B. 

      Access lists

    • C. 

      Encryption

    • D. 

      Authentication

  • 90. 
    What method is approved for changing passwords through the use of remote access?
    • A. 

      Password authentication protocol

    • B. 

      Strongly encrypted virtual private network

    • C. 

      Strongly encrypted virtual local area network

    • D. 

      Challenge handshake authentication protocol

  • 91. 
    An intrusion detection system (IDS) may miss attacks that bypass the firewall like application-based attacks and
    • A. 

      Snooping

    • B. 

      Tunneling

    • C. 

      Capturing

    • D. 

      Rejecting

  • 92. 
    What type of firewall can filter messages according to a set of rules for a specific application?
    • A. 

      Bastion host

    • B. 

      Circuit level

    • C. 

      Proxy server

    • D. 

      Packet filtering

  • 93. 
    What are the two vulnerability scanner examination techniques?
    • A. 

      Internal and external

    • B. 

      Physical and logical

    • C. 

      Static and dynamic

    • D. 

      Passive and active