Computer Networking
Which of the following network types have a designated router and a backup designated router assigned? 1. Broadcast 2. Point-to-point 3. NBMA 4. NBMA point-to-point

1, 2 and 3
All of these
1 and 3
3 and 4

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Computer Networking
CSMA (Carrier Sense Multiple Access) is

None of these
a method of determining which device has access to the transmission medium at any time
network access standard for connecting stations to a circuit-switched network
a method access control technique for multiple-access transmission media.
a very common bit-oriented data link protocol issued by ISO.

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Computer Networking
You need to configure a router for a Frame Relay connection to a non-Cisco router. Which of the following commands will prepare the WAN interface of the router for this connection?

Router(config-if)# encapsulation frame-relay q933a
Router(config-if)# encapsulation frame-relay ietf
Router(config-if)# encapsulation frame-relay cisco
Router(config-if)# encapsulation frame-relay ansi

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