Cisco CCIE Service Provider DSL Set 5

1.

What Q.931 message cannot be received in response to sending a Q.931 SETUP message?

Alerting Call Proceeding Connect USER Information Progress

2.

Using the shown debugging excerpt, what option best describes the problem?

An ISDN router has a misconfigured username password pair. An ISDN router is missing the stack password. The offload server does not offload calls from ISDN routers not using PPP Multilink. The offload server has a bad password.

3.

What is true about the DLCI field in the Frame Relay header?

It consists of two portions, source and destination, which map data to a logical channel. It generally has significance only between the local switch and the DTE device. It is an optional field in the ITU-T specification. It is present only in data frames sent through the network.

4.

In Frame Relay, the BECN bit is set by:

The Frame Relay network, to inform the DTE receiving the frame that congestion was experienced in the
path from source to destination The Frame Relay network, in frames traveling in the opposite direction from those frames that encounteredcongestion The receiving DTE, to inform the Frame Relay network that it is overloaded and that the switch shouldthrottle back The sending DTE, to inform the Frame Relay network that it is overloaded and that the switch should throttleback Any device that uses an extended DLCI address

5.

In Frame Relay, what devices resend packets that do not transmit correctly?

Digital transmission media cabled to monitor ports, as opposed to straight DCE signaling Network end stations Network switches running SNMP management software Special bridging devices within the backbone cloud

6.

The address field contains: (multiple answer)

The DLCI Value The Extended Address (EA) Congestion Control FCS

7.

In this network, Host A is trying to reach Host D. There is no routing protocol running, but Router B and C have the following static routes configured:Router B: ip route 10.1.3.0 255.255.255.0 ethernet 1Router C: ip route
10.1.1.0 255.255.255.0 ethernet 1

This will not work because Router B has no idea of how to forward traffic to the 10.1.3.0/24 network. This will work because Router B will recognize that Router C is on the 10.1.2.0/24 network through a routerdiscovery protocol and will forward traffic for 10.1.3.0/24 to Router C. This will not work because a broadcast interface in a static route command cannot be specified. This will work because Router B will ARP for Host D's IP address on the 10.1.2.0/24 network and Router Cwill answer.

8.

Given the four networks listed, what valid summary address (below) contains the longest prefix?

10.1.0.0/20 10.1.0.0/16 10.1.1.0/23 10.1.16.0/19 These networks cannot be summarized.

9.

The purpose of Administrative Distance, as used by Cisco routers, is:

To choose between routes from different routing protocols when receiving updates for the same network To identify which routing protocol forwarded the update To define the distance to the destination used in deciding the best path To be used only for administrative purposes

10.

What establishes routing table precedence in a routing table?

Default metrics Routing priority Type of service Iambic pentameter Administrative distance

Cisco CCIE Service Provider DSL Set 5

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