Tag - H12-821_V1.0-ENU exam

 As shown in the figure, in the network running the RSTP protocol, the original root port of SWC fails and the port is in the Down state. At this time, which of the following processes will the network go through to achieve stability? A .  The standby port on the SWC becomes the new root port...

 As shown in the figure, the stateful inspection firewall will forward the packet because the packet conforms to the firewall session state. A . True B. FalseView AnswerAnswer: B

 A certain router runs IS-IS, and its output information is shown in the figure. Which of the following statements is correct? A . The cycle of sending llH on the s4/0/0 interface is 30s B. The circuit-level1 of the s4/0/0 interface is Level-1 C. The Cost value of the s4/0/0 interface is 20 D. The s4/0/0 interface supports IPv6View AnswerAnswer: B

When the IPv6 address of the host is configured in the stateless address configuration method, and other parameters except the address are obtained through DHCPv6, how to set the M bit and 0 bit in the RA message?A . M=1, 0=1 B. M=0, 0=O C. M=1, 0=O D. M=O, 0=1View AnswerAnswer: D

About the description about the OSPF calculating the shortest path tree stage, which is the correct?A .  The first stage calculates the Stub network segment, and the second stage calculates the router node and Transit network segment. B. The first stage calculates routing nodes and Transit network segments, and the second stage calculates Stub network segments. C. The first...

 In the network shown in the figure, R1 is configured with route penetration, then R1 sends the LSP of Level1-2 to R3, so that R3 can learn the entire network route. A . True B. FalseView AnswerAnswer: B

The router receives two BGP routes containing the following attributes, please select the optimal route according to the BGP route selection rules. A .  The optimal route is route M, because its AS_Path is shorter than route N B. The optimal route is route N, because its MED is smaller than route M C. The optimal route is route N, because its AS_Path is longer than route N D. The optimal route...

There is a message in the BGP protocol that is periodically sent between BGP neighbors to maintain the neighbor relationship. This message is:A . Update B. Hello C. open D. KeepaliveView AnswerAnswer: D

 As shown in the figure, the stateful inspection firewall will forward the second TCP three-way handshake message in the figure. A . True B. FalseView AnswerAnswer: B

The command to configure the VRRP preemption delay is:A . vrrp vrid 1 preempt-mode timer delay 20 B. vrrp vrid 1 timer delay 20 C. vrrp vrid 1 preempt-timer 20 D. vrrp vrid 1 preempt-delay 20View AnswerAnswer: A