A.The BGP router accepts this route and adds it to the BGP routing table. This route, however, is neither preferred nor added to the IP routing table for packet forwarding.

B.The BGP router accepts this route and adds it to the BGP routing table. This route can participate in route selection and may be selected as the optimal route to be added to the IP routing table for packet forwarding.

C.The BGP router sends an error message to the router that has sent the Update message.

D.The BGP router refuses this route.

A.Verification

B.Rollback

C.Good portability

D.Accuracy

A.Less than 10

B.Less than 40

C.Less than 20

D.Less than 30

A.Starvation attacks by changing the CHADDR field value

B.Man-in-the-middle attacks and IP/MAC spoofing attacks

C.Bogus DHCP server attacks

D.TCP flag attacks J

A.One multicast MAC address maps to only one multicast IP address.

B.A multicast MAC address identifies receivers of a multicast group on the data link layer.

C.The high 24 bits of the multicast MAC address are 0x01005f, the 25th bit is fixed to 1, and the lower 23 bits of the MAC address map to the lower 23 bits of the multicast IP address.

D.One multicast MAC address maps to 32 multicast IP addresses.