Nat

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Nat - Quiz

Questions and Answers
  • 1. 

    Which of the following is the correct explanation of the “Network Layer” of the TCP/IP model?

    • A.

      This is the layer closest to the user, and allows the use of file transfer, e-mail and many different applications.

    • B.

      Absorbs the differences in characteristics of physical communication media, and secures a transparent transmission channel for upper level layers.

    • C.

      Performs setting and release of routing and connections in order to create a transparent data transmission between end systems.

    • D.

      Provides transmission control procedures (error detection, retransmission control, etc.) between adjacent nodes.

    Correct Answer
    C. Performs setting and release of routing and connections in order to create a transparent data transmission between end systems.
  • 2. 

    Which protocol is used for file transfer on the Internet?

    • A.

      FTP

    • B.

      PPP

    • C.

      SMTP

    • D.

      POP

    Correct Answer
    A. FTP
  • 3. 

    Which of the following adequately describes the characteristic of packet switching?

    • A.

      Suitable for transmission of large amounts of consecutive data.

    • B.

      Is not suitable for transmission of information between equipment where transmission speeds and protocols differ.

    • C.

      Delays do not occur inside the switched network.

    • D.

      Enables efficient use of communication circuits (by sharing multiple communication path)

    Correct Answer
    D. Enables efficient use of communication circuits (by sharing multiple communication path)
  • 4. 

    Which is the correct explanation of the role played by a DNS server?

    • A.

      Relates the IP address to the domain name and host name.

    • B.

      Enables remote access to intranets.

    • C.

      Dynamically allocates the IP address to the client.

    • D.

      Carries out communication processing on behalf of the client.

    Correct Answer
    A. Relates the IP address to the domain name and host name.
  • 5. 

    Which of the following commands shows the path from local host to a remote host?

    • A.

      Ping

    • B.

      Tracert

    • C.

      Ipconfig

    • D.

      Nmap

    Correct Answer
    B. Tracert
  • 6. 

    Which of the following is suitable as a description of FTP?

    • A.

      FTP performs file transfer over the Internet, so it incorporates encryption functions as a standard feature.

    • B.

      A LAN connection is required between computers involved in file transfer.

    • C.

      File transfer between two computers can be controlled by a computer other than these two computers.

    • D.

      Even if a communication error occurs during file transfer, and a lower-level protocol times out, the FTP recover function enables resending for reliable file transfer.

    Correct Answer
    D. Even if a communication error occurs during file transfer, and a lower-level protocol times out, the FTP recover function enables resending for reliable file transfer.
  • 7. 

    Which is the most appropriate description of the ARP of the TCP/IP protocol?

    • A.

      A protocol that controls the path by the number of hops between the gateways.

    • B.

      A protocol for getting the IP address from a server at the time of system startup in the case of system having no disc drive.

    • C.

      A protocol that controls the path by the network delay information based on a time stamp.

    • D.

      A protocol for getting the MAC address from the IP address.

    Correct Answer
    D. A protocol for getting the MAC address from the IP address.
  • 8. 

    Which of the following protocols uses link state routing algorithm?

    • A.

      BGP

    • B.

      OSPF

    • C.

      PPP

    • D.

      RIP

    Correct Answer
    B. OSPF
  • 9. 

    What is default port of DNS service?

    • A.

      53

    • B.

      25

    • C.

      80

    • D.

      110

    Correct Answer
    A. 53
  • 10. 

    How many bits are there in an IPv4 IP address?

    • A.

      16

    • B.

      32

    • C.

      64

    • D.

      8

    Correct Answer
    B. 32
  • 11. 

    What is default port of DNS service?

    • A.

      25

    • B.

      53

    • C.

      110

    • D.

      80

    Correct Answer
    B. 53
  • 12. 

    Which of the following adequately describes the characteristic of packet switching?

    • A.

      Suitable for transmission of large amounts of consecutive data.

    • B.

      Enables efficient use of communication circuits (by sharing multiple communication path)

    • C.

      Delays do not occur inside the switched network.

    • D.

      Is not suitable for transmission of information between equipment where transmission speeds and protocols differ.

    Correct Answer
    B. Enables efficient use of communication circuits (by sharing multiple communication path)
  • 13. 

    Which of the following commands is used to test reachability of a remote host?

    • A.

      Regedit

    • B.

      Ipconfig

    • C.

      Netstat

    • D.

      Ping

    Correct Answer
    D. Ping
  • 14. 

    Which piece of hardware is capable of performing protocol conversion between LAN systems whose transport and higher layers are different?

    • A.

      Gateway

    • B.

      Bridge

    • C.

      Router

    • D.

      Repeater

    Correct Answer
    C. Router
  • 15. 

    Netmask is used to determine:

    • A.

      An IP address is a DNS

    • B.

      An IP address is a gateway

    • C.

      An IP address is in the subnet

    • D.

      An IP address is a server

    Correct Answer
    C. An IP address is in the subnet
  • 16. 

    Which of the following classifies the LAN according to the configuration (topoloty) of the communication network?

    • A.

      Router, bride, repeater

    • B.

      Bus, star, ring/loop

    • C.

      Twisted-pair, coaxial, optical fiber

    • D.

      10BASE 5, 10BASE 2, 10BASE-T

    Correct Answer
    B. Bus, star, ring/loop
  • 17. 

    Which of the following is suitable as a description of FTP?

    • A.

      FTP performs file transfer over the Internet, so it incorporates encryption functions as a standard feature.

    • B.

      A LAN connection is required between computers involved in file transfer.

    • C.

      Even if a communication error occurs during file transfer, and a lower-level protocol times out, the FTP recover function enables resending for reliable file transfer.

    • D.

      File transfer between two computers can be controlled by a computer other than these two computers.

    Correct Answer
    C. Even if a communication error occurs during file transfer, and a lower-level protocol times out, the FTP recover function enables resending for reliable file transfer.
  • 18. 

    Which protocol is used for file transfer on the Internet?

    • A.

      POP

    • B.

      PPP

    • C.

      FTP

    • D.

      SMTP

    Correct Answer
    C. FTP
  • 19. 

    Three IP routers are connected by leased lines as shown in the figure below. Which of the following statements correctly describes the operation of router a in relaying a TCP/IP packets from terminal a to terminal b?

    • A.

      Router a relays all packets to both router b and router c.

    • B.

      Router a relays packets to router b only according to the relay router specified in the packet.

    • C.

      Router a learns the location of terminal b from the MAC address of the destination in the packet and relays the packets to router b only.

    • D.

      Router a relays packets to router b only based on the destination IP address in the packet.

    Correct Answer
    D. Router a relays packets to router b only based on the destination IP address in the packet.
  • 20. 

    The correct order of layers in TCP/IP model is

    • A.

      Physical layer, Data link layer, Network layer, Transport layer, Application layer

    • B.

      Physical layer, Network layer, Data link layer, Transport layer, Application layer

    • C.

      Physical layer, Data link layer, Transport layer,Network layer, Application layer

    • D.

      Physical layer, Data link layer, Network layer, Application layer, Transport layer

    Correct Answer
    A. Physical layer, Data link layer, Network layer, Transport layer, Application layer
  • 21. 

    The correct order of layers in TCP/IP model is

    • A.

      Physical layer, Data link layer, Transport layer,Network layer, Application layer

    • B.

      Physical layer, Data link layer, Network layer, Application layer, Transport layer

    • C.

      Physical layer, Data link layer, Network layer, Transport layer, Application layer

    • D.

      Physical layer, Network layer, Data link layer, Transport layer, Application layer

    Correct Answer
    C. Physical layer, Data link layer, Network layer, Transport layer, Application layer
  • 22. 

    Netmask is used to determine:

    • A.

      An IP address is a server

    • B.

      An IP address is a DNS

    • C.

      An IP address is in the subnet

    • D.

      An IP address is a gateway

    Correct Answer
    C. An IP address is in the subnet
  • 23. 

    Which of the following adequately describes the characteristic of packet switching?

    • A.

      Is not suitable for transmission of information between equipment where transmission speeds and protocols differ.

    • B.

      Delays do not occur inside the switched network.

    • C.

      Suitable for transmission of large amounts of consecutive data.

    • D.

      Enables efficient use of communication circuits (by sharing multiple communication path)

    Correct Answer
    D. Enables efficient use of communication circuits (by sharing multiple communication path)
  • 24. 

    Which is the most appropriate description of the ARP of the TCP/IP protocol?

    • A.

      A protocol that controls the path by the number of hops between the gateways.

    • B.

      A protocol for getting the IP address from a server at the time of system startup in the case of system having no disc drive.

    • C.

      A protocol that controls the path by the network delay information based on a time stamp.

    • D.

      A protocol for getting the MAC address from the IP address.

    Correct Answer
    D. A protocol for getting the MAC address from the IP address.
  • 25. 

    What is default port of DNS service?

    • A.

      110

    • B.

      53

    • C.

      80

    • D.

      25

    Correct Answer
    B. 53
  • 26. 

    Which of the following classifies the LAN according to the configuration (topoloty) of the communication network?

    • A.

      Router, bride, repeater

    • B.

      Twisted-pair, coaxial, optical fiber

    • C.

      10BASE 5, 10BASE 2, 10BASE-T

    • D.

      Bus, star, ring/loop

    Correct Answer
    D. Bus, star, ring/loop
  • 27. 

    Which is the correct explanation of the role played by a DNS server?

    • A.

      Enables remote access to intranets.

    • B.

      Carries out communication processing on behalf of the client.

    • C.

      Relates the IP address to the domain name and host name.

    • D.

      Dynamically allocates the IP address to the client.

    Correct Answer
    C. Relates the IP address to the domain name and host name.
  • 28. 

    Three IP routers are connected by leased lines as shown in the figure below. Which of the following statements correctly describes the operation of router a in relaying a TCP/IP packets from terminal a to terminal b?

    • A.

      Router a learns the location of terminal b from the MAC address of the destination in the packet and relays the packets to router b only.

    • B.

      Router a relays packets to router b only based on the destination IP address in the packet.

    • C.

      Router a relays packets to router b only according to the relay router specified in the packet.

    • D.

      Router a relays all packets to both router b and router c.

    Correct Answer
    B. Router a relays packets to router b only based on the destination IP address in the packet.
  • 29. 

    Which of the following is suitable as a description of FTP?

    • A.

      Even if a communication error occurs during file transfer, and a lower-level protocol times out, the FTP recover function enables resending for reliable file transfer.

    • B.

      File transfer between two computers can be controlled by a computer other than these two computers.

    • C.

      FTP performs file transfer over the Internet, so it incorporates encryption functions as a standard feature.

    • D.

      A LAN connection is required between computers involved in file transfer.

    Correct Answer
    A. Even if a communication error occurs during file transfer, and a lower-level protocol times out, the FTP recover function enables resending for reliable file transfer.
  • 30. 

    Which of the following protocols uses link state routing algorithm?

    • A.

      RIP

    • B.

      OSPF

    • C.

      BGP

    • D.

      PPP

    Correct Answer
    B. OSPF
  • 31. 

    Which is the correct explanation of the role played by a DNS server?

    • A.

      Relates the IP address to the domain name and host name.

    • B.

      Carries out communication processing on behalf of the client.

    • C.

      Enables remote access to intranets.

    • D.

      Dynamically allocates the IP address to the client.

    Correct Answer
    A. Relates the IP address to the domain name and host name.
  • 32. 

    Which of the following adequately describes the characteristic of packet switching?

    • A.

      Suitable for transmission of large amounts of consecutive data.

    • B.

      Enables efficient use of communication circuits (by sharing multiple communication path)

    • C.

      Is not suitable for transmission of information between equipment where transmission speeds and protocols differ.

    • D.

      Delays do not occur inside the switched network.

    Correct Answer
    B. Enables efficient use of communication circuits (by sharing multiple communication path)
  • 33. 

    Netmask is used to determine:

    • A.

      An IP address is in the subnet

    • B.

      An IP address is a server

    • C.

      An IP address is a DNS

    • D.

      An IP address is a gateway

    Correct Answer
    A. An IP address is in the subnet
  • 34. 

    Which of the following classifies the LAN according to the configuration (topoloty) of the communication network?

    • A.

      10BASE 5, 10BASE 2, 10BASE-T

    • B.

      Twisted-pair, coaxial, optical fiber

    • C.

      Router, bride, repeater

    • D.

      Bus, star, ring/loop

    Correct Answer
    D. Bus, star, ring/loop
  • 35. 

    The correct order of layers in TCP/IP model is

    • A.

      Physical layer, Data link layer, Network layer, Transport layer, Application layer

    • B.

      Physical layer, Data link layer, Network layer, Application layer, Transport layer

    • C.

      Physical layer, Data link layer, Transport layer,Network layer, Application layer

    • D.

      Physical layer, Network layer, Data link layer, Transport layer, Application layer

    Correct Answer
    A. Physical layer, Data link layer, Network layer, Transport layer, Application layer
  • 36. 

    Which of the following protocols uses link state routing algorithm?

    • A.

      BGP

    • B.

      OSPF

    • C.

      OSPF

    • D.

      PPP

    Correct Answer
    B. OSPF
  • 37. 

    How many bits are there in an IPv4 IP address?

    • A.

      16

    • B.

      32

    • C.

      64

    • D.

      8

    Correct Answer
    B. 32
  • 38. 

    Three IP routers are connected by leased lines as shown in the figure below. Which of the following statements correctly describes the operation of router a in relaying a TCP/IP packets from terminal a to terminal b?

    • A.

      Router a relays packets to router b only according to the relay router specified in the packet.

    • B.

      Router a relays packets to router b only based on the destination IP address in the packet.

    • C.

      Router a learns the location of terminal b from the MAC address of the destination in the packet and relays the packets to router b only.

    • D.

      Router a relays all packets to both router b and router c.

    Correct Answer
    B. Router a relays packets to router b only based on the destination IP address in the packet.
  • 39. 

    Which of the following commands is used to test reachability of a remote host?

    • A.

      Regedit

    • B.

      Netstat

    • C.

      Ipconfig

    • D.

      Ping

    Correct Answer
    D. Ping
  • 40. 

    Which of the following is suitable as a description of FTP?

    • A.

      Even if a communication error occurs during file transfer, and a lower-level protocol times out, the FTP recover function enables resending for reliable file transfer.

    • B.

      File transfer between two computers can be controlled by a computer other than these two computers.

    • C.

      A LAN connection is required between computers involved in file transfer.

    • D.

      FTP performs file transfer over the Internet, so it incorporates encryption functions as a standard feature.

    Correct Answer
    A. Even if a communication error occurs during file transfer, and a lower-level protocol times out, the FTP recover function enables resending for reliable file transfer.
  • 41. 

    Which of the following is suitable as a description of the functions of a modem?

    • A.

      A modem exchanges data based on the dialed number and address of the remote party in the communication.

    • B.

      A modem performs recovery from bit errors and the like according to a transmission control procedure.

    • C.

      A modem assembles transmission data in packet format and disassembles (takes out data from) received packets.

    • D.

      Analog signals on communication lines are configured differently from digital signals used by computers and terminals, so modems handle the translation of both.

    Correct Answer
    D. Analog signals on communication lines are configured differently from digital signals used by computers and terminals, so modems handle the translation of both.
  • 42. 

    Which of the following commands shows the path from local host to a remote host?

    • A.

      Nmap

    • B.

      Tracert

    • C.

      Ipconfig

    • D.

      Ping

    Correct Answer
    B. Tracert
  • 43. 

    What is default port of DNS service?

    • A.

      25

    • B.

      80

    • C.

      53

    • D.

      110

    Correct Answer
    C. 53
  • 44. 

    Which piece of hardware is capable of performing protocol conversion between LAN systems whose transport and higher layers are different?

    • A.

      Bridge

    • B.

      Repeater

    • C.

      Router

    • D.

      Gateway

    Correct Answer
    C. Router
  • 45. 

    Which of the following protocols uses link state routing algorithm?

    • A.

      RIP

    • B.

      PPP

    • C.

      OSPF

    • D.

      BGP

    Correct Answer
    C. OSPF
  • 46. 

    What is the means that is used in a WWW server to pass data that is input from a browser to an application program?

    • A.

      HTTP

    • B.

      CGI

    • C.

      URL

    • D.

      MIME

    Correct Answer
    A. HTTP
  • 47. 

    The correct order of layers in TCP/IP model is

    • A.

      Physical layer, Network layer, Data link layer, Transport layer, Application layer

    • B.

      Physical layer, Data link layer, Transport layer,Network layer, Application layer

    • C.

      Physical layer, Data link layer, Network layer, Transport layer, Application layer

    • D.

      Physical layer, Data link layer, Network layer, Application layer, Transport layer

    Correct Answer
    C. Physical layer, Data link layer, Network layer, Transport layer, Application layer
  • 48. 

    Netmask is used to determine:

    • A.

      An IP address is in the subnet

    • B.

      An IP address is a DNS

    • C.

      An IP address is a gateway

    • D.

      An IP address is a server

    Correct Answer
    A. An IP address is in the subnet
  • 49. 

    Three IP routers are connected by leased lines as shown in the figure below. Which of the following statements correctly describes the operation of router a in relaying a TCP/IP packets from terminal a to terminal b?

    • A.

      Router a relays packets to router b only based on the destination IP address in the packet.

    • B.

      Router a learns the location of terminal b from the MAC address of the destination in the packet and relays the packets to router b only.

    • C.

      Router a relays all packets to both router b and router c.

    • D.

      Router a relays packets to router b only according to the relay router specified in the packet.

    Correct Answer
    A. Router a relays packets to router b only based on the destination IP address in the packet.
  • 50. 

    Which of the following adequately describes the characteristic of packet switching?

    • A.

      Enables efficient use of communication circuits (by sharing multiple communication path)

    • B.

      Suitable for transmission of large amounts of consecutive data.

    • C.

      Delays do not occur inside the switched network.

    • D.

      Is not suitable for transmission of information between equipment where transmission speeds and protocols differ.

    Correct Answer
    A. Enables efficient use of communication circuits (by sharing multiple communication path)

Quiz Review Timeline +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • May 02, 2012
    Quiz Edited by
    ProProfs Editorial Team
  • May 02, 2012
    Quiz Created by
    Nhatnhat
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