CCNP系列認證CCNP(642-081)單項選擇題每日一練(2019.01.14)

A.Configure Access Control Lists to ensure Voice over IP traffic is checked by Auth Proxy.
B.Configure pNAT to ensure Voice over IP packets are properly translated.
C.Configure IOS firewall to permit RTP port numbers through the firewall via VPN. 
D.Configure Access Control Lists to allow Voice over IP traffic to bypass Auth Proxy checking.

A.802.1X authentication
B.authentication proxy
C.Context Based Access Control
D.Lock and Key authentication

A.when the router is booted up
B.when the router administratively does a no shutdown" on the IPSec SA 
C.when traffic matches a line of the access-list tied into the crypto-map in the router configuration, and that particular IPSec SA is not already up 
D.when the ISAKMP SA completes negotiation of all IPSec SAs (one per access-list line in the crypto ACL), it will be brought up immediately

A.Cisco PIX 501 Firewall
B.Cisco 831 router
C.Cisco 837 router 
D.Cisco VPN3002 Hardware Client
E.Cisco SW VPN Client

A.TCP packet sizes can be optimized by the router so there is no IPSec or AAL5 padding.
B.The local loop is a dedicated connection for a single subscriber to the DSLAM. 
C.Access to the WAN media uses a poll/response mechanism so no two subscribers transmit at the same time. 
D.There are no distance requirements from the Central Office (CO).