405
16. C. In IPv6, the solicited-node multicast message is used for resolution of the MAC address
for an IPv6 address. The first 104 bits of the 128-bit IPv6 address is ff02::1:ff, and the
last 24 bits comprise the last 24 bits of the IPv6 address that needs to be resolved. The
solicited-node multicast message is also used for Duplicate Address Detection (DAD). All
of the other options are incorrect.
17. B. The first field after the preamble and start frame delimiter (SFD) is the destination
MAC address. The destination MAC address is always first because switches need to
make forwarding decisions upon reading the destination MAC address. The source MAC
address is in field B in the exhibit. The type field is in field C in the exhibit, and the frame
checking sequence (FCS) is in field E in the exhibit.
18. B. Field C in the exhibit is the type field. The type field is used to define the upper-layer
protocol the data belongs to. The destination MAC address in field A of the exhibit is
used for forward filter decisions. The 7-byte preamble and start frame delimiter (SFD) of
the frame in the exhibit are used to synchronize timing of the data. The frame checking
sequence (FCS) is a cyclical redundancy checksum (CRC) value that can be seen in field E
of the exhibit.
19. B. The command used to reset the MAC address table is
clear mac-address-table
dynamic. The command reset mac address-table is incorrect. The command clear
mac-address-table is incorrect. The command clear mac table is incorrect.
20. A. The command to see all of the MAC addresses on a single interface is
show mac
address-table interfaces fast 0/1. This command can be entered in either
privileged exec mode or user exec mode. The command
show address-table
interfaces fast 0/1 is incorrect. The command show mac interfaces fast 0/1 is
incorrect. The command
show address-table fast 0/1 is incorrect.
21. D. The details of the output show that monitor session 1 is configured to capture interface
Fa0/1 and VLAN 2 in both directions. The destination interface is Fa 0/2. All of the other
options are incorrect.
22. C. Under normal circumstances, when VLANs are configured, they are stored in a file
separate from the startup or running-configuration. The VLAN database is stored in a
file called
vlan.dat on the flash. When decommissioning a switch, if you were to erase
the configuration of a switch, you would also need to delete the
vlan.dat. VLANs are
configured in the running configuration when the switch is in VTP transparent mode.
The VLAN configuration can then be stored for survivability of reboots in the startup
configuration by writing the running configuration to the startup configuration. The
vlan.dat file is not stored on the NVRAM; it is always stored on the flash.
23. B. The command
interface range gigabitethernet 1/1 - 12 will allow you
to configure the interfaces Gigabit Ethernet 1/1 to 1/12. The command
interface
gigabitethernet range 1/1 - 12 is incorrect. The command interface range
gigabitethernet 1/1 1/12 is incorrect. The command interface range
gigabitethernet range 1/1,12 is incorrect.
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