CCNP系列認證CCNP(642-892)單項選擇題每日一練(2019.01.14)

A.Yes. Traffic can pass either from switch S6 to S3 to S2 to S1， or， from switch S6 to S5 to S2 to S1
B.No. Traffic will pass from switch S6 to S5 and dead-end at interface Gi 0/0
C.No. Traffic will loop back and forth between switch S5 and S2
D.Yes. Traffic will pass from switch S6 to S3 to S2 to S1
E.No. Traffic will either pass from switch S6 to S5 and dead-end， or traffic will pass from switch S6 to S3 to S2 and dead-end

A. A Voice over IP （VoIP） packet consists of the voice payload， IP header， TCP header， RTP header， and  Layer 2 link header.
B. The voice carrier stream uses H323 to set up， maintain， and tear down call endpoints.
C. Call control signaling uses Real-Time Transport Protocol （RTP） packets that contain actual voice  samples.
D. The sum of bandwidth necessary for each major application， including voice， video， and data， should not exceed 75 percent of the total available bandwidth for each link.

A. It indicates that the radio of the client adapter is disabled.
B. It indicates that the client adapter is not associated to an access point or another client. 
C. It indicates that the client adapter is associated to an access point or another client， but the user is not  EAP authenticated.
D. It indicates that the client adapter is associated to an access point or another client， that the user is  authenticated if the client adapter is configured for EAP authentication， and that the signal strength is  excellent or good.
E. It indicates that the client adapter is associated to an access point or another client， that the user is  authenticated if the client adapter is configured for EAP authentication， and that the signal strength is fair.
F. It indicates that the client adapter is associated to an access point or another client， that the user is  authenticated if the client adapter is configured for EAP authentication， and that the signal strength is poor.

A. Router A is the master virtual router， and Router B is the backup virtual router. When Router A fails，  Router B will become the master virtual router. When Router A recovers， Router B will maintain the role of  master virtual router.
B. Router A is the master virtual router， and Router B is the backup virtual router. When Router A fails，  Router B will become the master virtual router. When Router A recovers， it will regain the master virtual  router role.
C. Router B is the master virtual router， and Router A is the backup virtual router. When Router B fails，  Router A will become the master virtual router. When Router B recovers， Router A will maintain the role of  master virtual router.
D. Router B is the master virtual router， and Router A is the backup virtual router. When Router B fails，  Router A will become the master virtual router. When Router B recovers， it will regain the master virtual  router role.

A.switchport priority extend trust
B.switchport priority extend cos 2
C.switchport priority extend cos 11
D.mls qos cos 2
E.mls qos cos 2 override