After which of the following parameters are modified does an IS-IS neighbor relationship need to re-established?

• A.The cost of an IS-IS interface is changed.
• B.The level of an ISIS interface is changed.
• C.The IP address of an ISIS interface is changed.
• D.The interval at which an IS-IS interface sends IIH packets is changed.

Comment: *

Name: *

Email: *

Verification: *

See the following figure. All routers on the network run IS-IS and are in area 49.0001. By referring to the LSDB of R1, the Level-2 DIS is. (Enter the device name, for example, R1.)

Comment: *

Name: *

Email: *

Verification: *

Which of the following is the command to configure the VRRP preemption delay?

• A.vrrp vrid 1 preempt-delay 20
• B.vrrp vrid 1 preempt-mode timer delay 20
• C.vrrp vrid 1 timer delay 20
• D.vrrp vrid 1 preempt-timer 20

Comment: *

Name: *

Email: *

Verification: *

For the same multicast source, the device can determine the only multicast traffic incoming interface on the device through RPF inspection.

• A.TRUE
• B.FALSE

Comment: *

Name: *

Email: *

Verification: *

Which of the following VPN technologies may have two IP packet headers in one packet? (Multiple choice)

• A.GRE
• B.SSL VPN
• C.L2TP
• D.MPLS VPN
• E.IPsec VPN

Comment: *

Name: *

Email: *

Verification: *