Chapter 6 Practice Test Answers
1. C. NetBEUI is a nonroutable protocol, and therefore can be used only on singlesegment networks.
2. A. SPX is a Transport layer protocol that is connection-oriented.
3. D. NetBEUI has no Network layer services, therefore it uses NetBIOS names to
identify nodes on the network.
4. B. A MAC address is always formatted in hexadecimal notation and contains a
48-bit address space.
5. C. The IPX/SPX logical address for nodes is a three-part address consisting of the
network identifier, the MAC address of the node, and the socket number to
identify processes.
6. A. IP resides at the Network layer of the OSI Model and provides logical
addressing. A packet cannot be delivered to a logical address, and therefore the
MAC address of the destination node must be known for delivery.
7. D. NetBEUI has no Network layer services and cannot be routed.
8. B. NBP (Name Binding Protocol) allows friendly names for nodes to be resolved
to physical addresses.
9. B. SPX provides all Transport layer services, such as error checking and
retransmission, guaranteeing delivery of the packets.
10. A. TCP, like SPX, is a Transport layer protocol responsible for guaranteed
delivery.
11. A. OSPF uses a link state algorithm to determine the best path for a packet. It
does not exchange entire tables with neighbor routers, only updates to the table,
and so uses less bandwidth.
12. D. DNS (Domain Name System) tracks friendly names and their corresponding IP
addresses to allow resolution by requesting clients.
13. C. Macintosh systems are the only machine that ships with AppleTalk installed
natively. Other machines can support add-on software for interoperability, as long
as the operating system on the machine supports AppleTalk.
14. C. This is most likely a routing problem. The Network layer is responsible for
routing functions.
15. D. SPX is a Transport layer protocol and will retransmit a missing packet.
16. C. TCP/IP is required for Internet connectivity.
17. D. The 802.2 frame type is used with NetWare version 4.x and later.
18. C. IANA is responsible for the distribution of IP addresses.
19. A. A unique node address with no services pending would be represented only by
the network number and the node’s MAC address.
20.
router.
B. An internetwork is a set of two or more LANS or networks connected by a