1. Which describes the changes made to a packet's IP destination address, as that packet is passed from router to router on it's way to the destination host?

    2. A. The destination IP address changes each hop, to be the address of the next router.
    B. The destination IP address changes anytime a router is sending the packet over a WAN.
    C. The destination IP address will always be the address of the first router.
    D. The destination IP address never changes. (x)

  2. In a connection-oriented system, what happens before any user data is transferred?

    3. A. a connection is established with the recipient's local router
    B. a connection is established between the sender and receiver (x)
    C. a connection is established with the sender's local router
    D. the destination is not contacted before any actual data is sent

  3. In a connectionless system, which of the following is correct?

    4. A. The destination is not contacted before a packet is sent. (x)
    B. The destination is contacted before a packet is sent.
    C. A connectionless connection is established with the recipient before a packet is sent.
    D. A non-connection is established between the sender and recipient before a packet is sent.

  4. Router ARP tables hold information from which of the following?

    5. A. all Ethernet LANs
    B. all networks connected to them (x)
    C. all networks in the Internet
    D. MAC addresses only

  5. What happens if a data packet reaches a router that is destined for a network with which that router is not directly connected?

    6. A. The router forwards the packet to all other routers.
    B. The router returns the packet to the source device with no explanation.
    C. The router forwards the packet to another router that most likely contains information about the destination. (x)
    D. The router returns the packet to the source device with the explanation that the destination was unreachable.

  6. When configuring a host computer, which of the following describes the router interface that connects to the same network segment?

    7. A. default interface
    B. default gateway (x)
    C. default port
    D. default subnet

  7. What are the two proprietary routing protocols developed by Cisco?

    8. A. RIP and OSPF
    B. IGRP and EIGRP (x)
    C. IPX and SPX
    D. TCP and IP

  8. Which protocol is used to dynamically assign IP addresses?

    9. A. DHCP (x)
    B. ARP
    C. proxy ARP
    D. IGRP

  9. Which type of routing protocol is RIP?

    10. A. distance vector (x)
    B. link state
    C. hybrid
    D. spanning tree

  10. Which of the following is an example of an IGP (Interior Gateway Protocol)?

    11. A. IPX
    B. SPX
    C. UDP
    D. IGRP (x)

  11. Which is a network layer protocol that can be routed?

    12. A. IP (x)
    B. ISP
    C. NetBEUI
    D. ARP

  12. Which is an example of a routed protocol?

    13. A. RIP
    B. IPX/SPX (x)
    C. EIGRP
    D. OSPF

  13. Which is an example of a Layer 3 internetworking device that passes data packets between networks?

    14. A. router (x)
    B. hub
    C. bridge
    D. switch

  14. Which protocol can find the MAC address of a computer given its IP address?

    15. A. RARP
    B. DHCP
    C. ARP (x)
    D. Proxy RARP

  15. Which type of routing allows routers to adjust to changing network conditions?

    16. A. static
    B. dynamic (x)
    C. automatic
    D. stub

  16. Which of the following contains a unique network number that is used in routing?

    17. A. MAC address
    B. physical address
    C. IP address (x)
    D. NIC card

  17. Connection-oriented network processes are often referred to as what?

    18. A. packet switched
    B. segment switched
    C. circuit switched (x)
    D. network switched

  18. What is described when a router acts as a default gateway, allowing a device on one subnet to find the MAC address of a host on another subnet?

    19. A. proxy ARP (x)
    B. proxy RARP
    C. RARP
    D. subnetting

  19. What do bridges and switches use to make data forwarding decisions?

    20. A. logical addresses
    B. physical addresses (x)
    C. network addresses
    D. IP addresses

  20. What is the correct term for when routes are learned automatically?

    21. A. static routing
    B. automatic routing
    C. enhanced routing
    D. dynamic routing (x)

  21. IP relies upon which OSI layer protocol to determine whether packets have been lost and request retransmission?

    22. A. application
    B. presentation
    C. session
    D. transport (x)

  22. What is the most common protocol used to transfer routing information between routers located on the same network?

    23. A. OSPF
    B. RIP (x)
    C. IGRP
    D. EIGRP

  23. What do routers use to exchange routing tables and share route information?

    24. A. routed protocols
    B. transport protocols
    C. routing protocols (x)
    D. UDP protocols

  24. When sending data to a host on a different network, the source host encapsulates data so that it contains what destination address in the IP header?

    25. A. IP address of the router
    B. MAC address of the router
    C. MAC address of the destination device
    D. IP address of the destination host (x)
  25. Why is a static route the preferred method for reaching stub networks?

    26. A. static routing requires less overhead (x)
    B. static routing requires more overhead on the network
    C. this allows routers to adjust to changes in the network
    D. the routes are learned automatically
  26. The IP address for a router interface should be part of what?

    27. A. the network attached to the interface (x)
    B. any network attached to the router
    C. it does not matter
    D. router interfaces never have IP addresses