When does the E-series router st

第1题：

第2题：

When should you enable Network Address Translation Transparency (NAT-T) on the Teleworker?（）

• A、when a router between the Teleworker router and the head-end VPN router is doing NAT/pNAT and does not support IPSec pass-through 
• B、when the Teleworker router itself is doing NAT/pNAT
• C、always
• D、never

第3题：

第4题：

In which two ways does the BGP graceful capability preserve prefix information during a restart？（）

• A、The peer router immediately removes the BGP routers that it learned from the restarting router from itsBGP routing tables.
• B、The router establishes BGP sessions with other routers and relearns the BGP routes from others that are also capable of graceful restart. The restarting router waits to receive updates from the neighboringrouters. When the neighboring routers send end-of-RIB messages to indicate that they are donesending updates，the restarting router starts sending its own updates.
• C、The peer router sends an end-of-RIB message to the restarting router.
• D、The restarting router removes any stale prefixes after the timer for stale entries expires.
• E、The restarting router does not remove any stale prefixes after the timer for stale entries expires.

第5题：

Which of the following HSRP router states does an active router enter when it is preempted by a  higher priority router？（）

• A、 active
• B、 speak
• C、 learn
• D、 listen
• E、 init
• F、 standby

第6题：

Which of the following statements about authentication responses and conditions is true? （）(Choosetwo.)

• A、When a router receives a failure response, it stops querying authentication methods.
• B、When a router receives an error response, it stops querying authentication methods.
• C、If the router receives a failure response from an authentication method, it queries the next method.
• D、The router does not differentiate between failure and error responses; the authentication process is always interrupted.
• E、If it receives no response from the authentication method, a router will determine the error condition On its own; the router also has the option to proceed to the next method in a list if configured accordingly.

第7题：

What does the OSPF command capability vrf-lite achieve？（）

• A、It enables provider edge （PE） specific checks on a router when the OSPF process is associated with the VRF
• B、It disables provider edge （PE） specific checks on a router when the OSPF process is associated with the VRF
• C、It enables the exchange of the "VRF-Lite" capability when the OSPF adjacency is formed.
• D、It disables the MPLS processing on the OSPF learned routes inside the VRF

第8题：

第9题：

When is an IPSec SA built on the Teleworker Router?（）

• 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

第10题：

Which of the following statements about authentication responses and conditions is true?（）(Choose two.)

• A、When a router receives a failure response, it stops querying authentication methods.
• B、When a router receives an error response, it stops querying authentication methods.
• C、If the router receives a failure response from an authentication method, it queries the next method.
• D、The router does not differentiate between failure and error responses; the authentication process is always interrupted.
• E、If it receives no response from the authentication method, a router will determine the error condition on its own; the router also has the option to proceed to the next method in a list if configured accordingly.