What time will they leave for the airport？A．11:30B．0.5625C．0.395833

A. There are three IGMP modes: dense mode, sparse mode, and sparse - dense mode

B. IGMP is used to register individual hosts with a multicast group

C. IGMP version 3 enables a multicast receiving host to specify to the router which sources it should forward traffic from

D. IGMP messages a re IP datagrams with a protocol value of 2, destination address of 224.0.0.2, and a TTL value of 1

E. IGMP is a multicast routing protocol that makes packet - forwarding decisions independent of other routing protocols such as EIGRP

F. IGMP snooping ru ns on Layer 3 routers

Which of the following statements is true, according to the passage？

A．There are three characters in the novel, which is about the life of one.

B．Universal concerns have been represented in a day of three characters.

C．The three characters are compressed into one life of subconsciousness.

D．Three characters in the novel have been described chronologically.

A.Multicast addresses 224.0.0.13 and 224.0.0.22 are reserved link - local addresses used by PIMv2 and IGMPv3

B.Because they would map to overlapping IP multicast MAC addresses, multicast addresses 224.0.1.1 and 238.1.1.1 could not be used toget her

C.Multicast addresses 224.0.0.0 through 224.0.0.255 are always forwarded because they are transmitted with Time to Live (TTL) greater than 1

D.Multicast addresses 224.0.0.5 and 224.0.0.6 are source multicast addresses for OSPF routers

E.The a dministratively scoped multicast addresses 239.0.0.0 through 239.255.255.255 are similar in purpose to RFC 1918 private unicast addresses

F.Multicast address 224.0.1.1 has been reserved for the Network Time Protocol (NTP) by the IANA

A. If a packet is sent to a multicast group address, the multicast frame contains the source multicast address.

B. A router does not have to be a member of a multicast group to recei ve multicast data.

C. A router must be a member of a multicast group to send to the group.

D. A router does not have to be a member of a multicast group to send to the group.

E. If a packet is sent to a multicast group address, all members of the multic ast group will receive it.

F. A router must be a member of a multicast group to receive multicast data.

A. EIGRP supports five generic packet types, including hello, database description (DBD), link state request (LSR), link - state update (LSU), and LSAck.

B. EIGRP sends periodic hello packets to the multicast IP address 224.0.0.10.

C. EIGRP will not form a neighbor relationship with another peer when their K values are mismatched.

D. EIGRP sends periodic hello packets to the multicast IP address 224.0.0.9.

E. E IGRP will form a neighbor relationship with another peer even when their K values are mismatched.

F. EIGRP supports five generic packet types, including hello, update, query, reply, and ACK packets.

A. IGMP snooping and Cisco Group Membership Protocol (CGMP) can be used simultaneously on a switch.

B. IGMP snooping a nd Cisco Group Membership Protocol (CGMP) were developed to help Layer 3 switches make intelligent forwarding decisions on their own.

C. IGMP snooping examines IGMP join/leave messages so that multicast traffic is forwarded only to hosts that sent an IG MP message toward the router.

D. IGMP snooping is an IP multicast constraining mechanism for Layer 2 switches.

E. IGMP snooping is enabled with the ip multicast - routing global configuration command.

A. The multicast sources must register with the RP to form the multicast distribution tree.

B. An RP is required only in networks running Protocol Independent Multicast dense mode (PIM DM).

C. The multicast receivers must register with the RP to form the multicast distribution tree.

D. An RP is required only in networks running Protocol Independent Multicast sparse mode (PIM SM).

E. An RP is required only in networks running Protocol Independent Multicast sparse - dense mode (PIM - SDM).

F. To form the multicast distribution tree, the multicast sources register with and the receivers join the RP.

A．169.254.23.59

B． 223.254.255.254

C． 225.1.1.1

D． 227.43.34.2

E． 238.3.3.3

F． 249.1.2.3

Which of the following statements is NOT true about English pub？

A.English pub is a relaxed, social drinking establishment.

B.English pub is a prominent part of English culture.

C.The Rose and Crown, the Red Lion or the Three Horseshoes are household names in England.

D.English pub enjoys only national fame as a place to escape the outside world.

Which of the following statements is true about the teachers？

A．They have to spend more time in school than students.

B．They have to go to school every other Saturday.

C．They have to learn three times as much as students.

D．They have to keep effective with constant training.