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Answers to Practice Exam

483

22.

C. To set the IP address on a 5000 series switch, use the command
set int sc0 ip address mask

. See Chapter 2 for more information.

23.

A. Standard IP access lists use only source IP addresses to filter a net-
work. See Chapter 11 for more information.

24.

A, B, D, E, G. Port addressing at the Transport layer provides virtual
circuit identification and application-specific port addressing. Neither
of these functions can be used with layer 3 switches. See Chapter 1 for
more information.

25.

C. The command

show interface vlan #

will show both the vir-

tual MAC address if set and the burned-in address (BIA) of the VLAN
interface. See Chapter 6 for more information.

26.

D. The MAC prefix is 01-00-5e, and the second octet's hex value is
02, as well as the third's. The fourth octet has a hex value of 7f. See
Chapter 9 for more information.

27.

B. When a trunked link is configured, the trunked link will automat-
ically send information for all VLANs down this link. You must
remove unwanted VLANs from a trunked link by hand. For more
information, see Chapter 3.

28.

A. On an IOS-based switch, a 1900 for example, use the spantree
priority 16

from interface configuration to change the port priority.

See Chapter 5 for more information.

29.

C. TTL is controlled by the IP header in the multicast packet. The
correct syntax requires a hyphen between ttl and threshold. See
Chapter 10 for more information.

30.

D. The bridge ID is sent via a multicast frame inside a Bridge Protocol
Data Unit (BPDU) update. See Chapter 4 for more information.

31.

C. The subinterface command encapsulation type vlan is used to
set the VLAN ID and encapsulation method on a subinterface. See
Chapter 6 for more information.

32.

C. The MAC prefix is 01-00-5e. The second octet can use only the
first 7 bits, excluding the bit value of 128. This gives a binary value of
101100, which converts to hex as 5c. The hex values for the last two
octets are 34 and 19 respectively. See Chapter 9 for more information.

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