Answers to Assessment Test
lxiii
63.
B. To stop network loops from occurring with redundant links,
layer-2 devices implement the Spanning-Tree Protocol. See Chapter 2
for more information.
64.
C. The keyword for Ethernet_II is ARPA. See Chapter 8 for more
information.
65.
B. Switches cannot translate from one media to another on the same
segment. See Chapter 2 for more information.
66.
C. Backward-Explicit Congestion Notification is used to tell the
transmitting device to slow down because the Frame Relay switch is
congested. See Chapter 10 for more information.
67.
B. MAC address are 48 bits long, 6 bytes, and written in hex. See
Chapter 1 for more information.
68.
A. 256 192
= 64. 64 + 64 = 128. 128 + 64 = 192. The subnet is 128,
the broadcast address is 191, and the valid host range is the numbers
in between, or 129190. See Chapter 3 for more information.
69.
D. IPX extended access lists use the numbers 900999. See Chapter 9
for more information.
70.
A. You should only have one root bridge per network. See Chapter 2
for more information.
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