4A0-105 Practice Exam Questions and Answers

A.  

The loopback control PDU instructs the remote port to enter loopback mode.

B.  

Putting a port in loopback does not affect customer data flow

C.  

Both ports must rediscover the OAM capabilities of each other once the port is put back into service.

D.  

Both ports must still send Information PDUs to avoid going back to discovery mode.

E.  

When a port is in loopback mode, service mirroring will still work if it is a mirror-source or mirror-destination.

F.  

All packets, except for information PDUs, are looped back.

A.  

A management VPLS carries customer traffic over the non-blocking spoke-SDP

B.  

A VPLS service must be defined as a management VPLS upon creation to take on the role of a management VPLS

C.  

The state of a spoke-SDP within a user VPLS will take on the state of the spoke-sdp within the management VPLS.

D.  

The management VPLS must be created before the user VPLS.

A.  

Spanning-tree BPDUs are returned to the sender.

B.  

The MEP sees its own CFM frames returned to itself.

C.  

This is not a function of IEEE 802.lag but of 802.1D

D.  

The record field of the CFM frame keeps track of chassis-mac addresses.

A.  

9100

B.  

9104

C.  

9108

D.  

9122

E.  

9126

A.  

I-VPLS is configured in the core of the network with an l-MAC address. This l-MAC address is the only MAC learned in the core

B.  

The B-VPLS and l-VPLS are configured in the edge. The B-VPLS is configured with a Backbone MAC and is the only MAC learned in the core

C.  

Each SDP is configured with a Backbone MAC to hide customer MAC addresses in the core

D.  

Each SAP is associated with a common l-MAC to hide customer MAC addresses in the core

A.  

H-VPLS

B.  

IEEE 802.lag

C.  

MAC aggregation

D.  

MAC-in-MAC

A.  

Bridge B 1/1/3

B.  

Bridge B 1/1/2

C.  

Bridge C 1/1/2

D.  

Bridge C 2/1/1

E.  

Bridge D 1/1/1

F.  

Bridge D 1/1/3

G.  

Bridge E 1/1/1

A.  

The frame will be flooded.

B.  

The frame will be discarded.

C.  

The frame will be fragmented.

A.  

Option A

B.  

Option B

C.  

Option C

D.  

Option D

A.  

Bridge B 1/1/3

B.  

Bridge B 1/1/2

C.  

Bridge C 1/1/2

D.  

Bridge C 2/1/1

E.  

Bridge D 1/1/1

F.  

Bridge D 1/1/3

G.  

Bridge E 1/1/1