Huawei H12-821_V1.0 Practice Test - Questions Answers, Page 22

The Internet Assigned Numbers Authority (IANA) allocates Class D addresses to IPv4 multicast. An IPv4 address is 32 bits long, and the four most significant bits of a Class D address are 1110.

On the campus OSPF network shown in the following figure, the interfaces connecting the five routers are GE interfaces, and their costs are not changed. The import-route command is run on R1. After the network converges, the route to the server at 192.168.1.0/24 is queried on R2. Which of the following is the cost of this route?

On a broadcast IS-IS network shown in the following figure, a DIS needs to be elected to create and update pseudonodes. Which of the following routers is elected as the DIS?

On the OSPF network shown in the figure, an adjacency has been established between R1 and R2. An engineer configures the commands in the figure on R2. In this case, which of the following routing entries may exist in the routing table of R2?

On the OSPF network shown in the figure, R1, R2, and R3 run OSPF, and R1 advertises four VPN routes to OSPF. A filter-policy needs to achieve the following goal: R1's and R3's routing tables contain the routes to 192.168.3.0/24, but R2's routing table does not. Which of the following filter-policies cannot meet this requirement?

Which of the following statements are true about the packet filtering firewall?

Typically, a protocol that occupies two ports during communication is called a multi-channel protocol. For such protocols, the ASPF function must be enabled on the firewall to ensure smooth setup of the data channel and reduce the risk of attacks. Which of the following protocols is not a multi-channel protocol?

If the interval for two consecutive packets of a TCP session reaching the firewall is longer than the aging time of the session, the firewall deletes the session information from the session table to ensure network security.