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Chapter 9
Multicast
13.
Why do Cisco Catalyst switches use CGMP instead of just using IGMP?
A.
Cisco's proprietary code is easier to compile into IOS.
B.
Cisco catalysts don't understand IGMP packets.
C.
Routers need switches to translate IGMP requests into CGMP
requests in order to process them.
D.
Catalysts can't distinguish between membership report packets
and actual multicast data packets.
14.
How does a host connected to a Catalyst switch subscribe to a multi-
cast group? (Choose all that apply.)
A.
It sends an IGMP request directly to the sc0 interface on the
switch.
B.
It sends an IGMP membership report to the router.
C.
It sends a CGMP membership report to the router.
D.
It sends a CGMP membership report to the switch.
E.
The router converts the CGMP to IGMP and forwards it to the
switch for processing.
F.
The router converts the IGMP membership request to a CGMP
join request and forwards it to the switch for processing.
15.
What two address values does CGMP use compared to IGMP?
A.
CGMP utilizes the USA and GDA.
B.
CGMP utilizes the MAC address and IP address.
C.
CGMP utilizes the GSA and UDA.
D.
CGMP uses the MAC address and switch port.
16.
What are the two types of distribution trees?
A.
RP trees
B.
Multicast trees
C.
Shared root trees
D.
Source root trees
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