Cisco CCIE Service Provider Cable Recertification Set 6

1.

Router A has a 512K-access port into the frame relay cloud. Router B has 128K-access port into the frame relay cloud. The two routers are connected with symmetrical PVCs that are configured for 64K committed
information rate (CIR). What Frame Relay Traffic Shaping map-class sub-command should be entered on
Router A to prevent workstation A from overrunning the access port on Router B?

frame-relay traffic-rate 128000 512000 frame-relay traffic-rate 64000 512000 frame-relay traffic-rate 512000 64000 frame-relay traffic-rate 128000 64000 frame-relay traffic-rate 64000 128000

2.

What is NOT an ATM class of service?

CBR VBR-t ABR UBR CAR

3.

What describes a technique, used to encapsulate voice (NOT data) over ATM?

RFC 1483 LANE AAL-1 RFC 1577

4.

What is the purpose of rate decoupling for ATM transmission?

It provides transparency between SONET and SDH. It converts higher-speed DS3/E3 to lower-speed optical rates. It processess the packing and unpacking of frames into 53-octet cells. It allows lower-speed traffic on an ATM facility without causing traffic gaps.

5.

The ATM reference model is composed of which ATM layers? (multiple answer)

ATM layer Physical layer Modular layer ATM adaptation layer

6.

The address field contains: (multiple answer)

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

7.

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

8.

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.

9.

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

10.

Program PID=0 is always:

PAT PMT CAT NIT EMM

Cisco CCIE Service Provider Cable Recertification Set 6

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Cisco CCIE Service Provider Cable Recertification Set 6

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