H12-821 Online Practice Questions and Answers

CORRECT TEXT Compress the 2001:0DBB:B8:0000:C030:0000:0000:09A0:CDEF address.___________(if the answer contains letters, capitalize them.)

The filter-policy 2000 export command is run in an ISIS process. Which of the following statements about the functions of a filter policy is false?

A. Is used together with the route import function to advertise some imported external routes to neighbors.

B. If this command is not run, the device by default advertises all routes that ISIS Imports form external routing protocols.

C. Controls the advertisement of routes generated by the device.

D. Filters LSPs to be advertised.

ON a stateful inspection Firewall where there is no session table, when the status detection mechanism is enabled and the second packet (CYN+ACK) of 3-way hadshakes reaches the firewall. Which of the following statements is true?

A. If the firewall security policy permits packets to pass, the session table is created.

B. By default, when status detection is disabled and the permit policy is configured packets can pass.

C. Packets must pass the firewall, and a session table is established.

D. If the firewall security policy permits packets to pass, the packets can pass the firewall.

The Interface \P address and VRRP virtual IP address can be the same.

A. TRUE

B. FALSE

Which of the following attacks is not the network layer attack?

A. IP spoofing attack

B. ICMP attack

C. Smurf attack

D. ARP spoofing attack

Which of the following statements regarding IGMPv1 and IGMPv2 are true?

A. 1GMPv2 supports only general query.

B. 1GMPv2 defines the Leave message type.

C. IGMPv1 does not define the IGMP Leave message type.

D. IGMPv1 supports general query.

Which of the following statements regarding BGP route advertisement are false?

A. All the BGP routes learned from all BGP peer will be advertised to other BGP peers.

B. Only the optimal routes preferred by BGP can be advertised to other BGP peers.

C. By default, the routes learned from an IBGP peer will not be forwarded to other IBGP peers.

D. Only the routes learned from IGPs can be advertised to other BGP peers.

A local router runs IS-IS and its command output is shown in the following figure. Which of the following statements is true?

A. The circuit level of S4/0/0 is Level-1.

B. S4/0/0 supports IPv6.

C. S4/0/0 sends IIH packets at the interval of 30s.

D. The cost of S4/0/0 is 20.

RSTP provides different functions in different scenarios. Which of the following statements Is false?

A. After TC-BPDU attack defense function is enabled, you can set the number of times the switch processes TC BPDUs within a certain period

B. The role of the designated port that is enabled with root protection cannot be changed C. If the edge port on the switch enabled with BPDU protection receives RST BPDU, the switch sets the edge port as a non-edge-port and triggers STP calculation

D. When the designated port enabled with root protection receives optimal RST BPDUs, the port enters the Discarding state and does not forward packets. If the port does not receive optimal RST BPDUs within a certain period of time, the port will automatically restore to the Forwarding state

According to BGP route selection rules, the route with the higher Local_Pref is preferred.

A. TRUE

B. FALSE