Cisco CCIE Service Provider Optical Recertification Set 1

1.

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.

2.

Where is there a major difference between SONET and SDH?

Interpretation of Overhead Regeneration Multiplexing Optical line bit rates Ring topologies supported

3.

EIGRP applies the principle of Feasible Successor (FS) in resolving a new path to a lost route. What statement regarding the FS is correct?

Information is stored for the FS as part of the Link-State Routing updates forwarded for EIGRP. EIGRP estimates the FS from each neighbor for each network after an exchange of database informationduring the normal update process. It uses this information for path selection when a route is lost. When EIGRP is notified that a route is lost, it will always send requests to each neighbor for ways to reachthe lost route. The neighbor that returns the best path will qualify as the FS. EIGRP nominates a central router as the FS for all lost routes during configuration.

4.

If the PMD coefficient of a given fiber is 4 ps and the distance under consideration is 625Km calculate the effect of dispersion (differential group delay) due to PMD.

100ps 200ps 50ps 150ps

5.

What is the correct relative switching priority in a BLSR ring (higher to lower)?

Protection Lockout, Manual Switch, Forced Switch Forced Switch, Manual Switch, Signal Degrade Signal Fail, Signal Degrade, Manual Switch Protection Lockout, Manual Switch, Path AIS Signal Degrade, Signal Fail, Manual Switch

6.

Telcordia has defined national ISDN, which is basically within the construct of Q.931 protocol with some modifications. If National ISDN requires a new information element (IE), how will this need be handled?

No new IE can be defined by standard bodies other than ITU-T; therefore, Telcordia must pass the

information in open fields of existing IE. Telcorida has to define a new codeset (CS) 0 IE. Telcordia should define a new CS7 IE Telcordia should define a new CS5 IE Use CS8 IE

7.

What statement is correct regarding Virtual LANs (VLANs)?

It is permissible to bridge inside a VLAN, but not to route between VLANs. It is not permissible to bridge inside a VLAN, but it is valid to route between VLANs. It is permissible to bridge inside a VLAN and to route between VLANs. It is not permissible to bridge inside or route between VLANs.

8.

When using IS-IS for IP routing, Dual IS-IS defined by RFC 1195, what is true? (multiple answer)

It is necessary to configure a NSAP address. It is not possible to perform both IP and CLNS routing wih the same process. IP address and subnet information is carried in the TLV field on the L-1/L-1 LSPs. Dual IS-IS does not support VLSM information.

9.

What is not one of the five key functional areas for Cisco Transport Manager?

Accounting Configuration Fault Inventory Performance

10.

What are the four main parts of an EDFA?

Isolator, coupler, splitter, and pump Isolator, splitter, pump, and filter Coupler, splitter, pump, and doped fiber Isolator, coupler, pump, and doped fiber Coupler, pump, doped fiber, AWG

Cisco CCIE Service Provider Optical Recertification Set 1

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Cisco CCIE Service Provider Optical Recertification Set 1

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