单选题Which of the following protocols requests membership to a multicast group?（）A IGMPB SNMPC SMTPD ICMP

题目
单选题
Which of the following protocols requests membership to a multicast group?（）
A

IGMP

B

SNMP

C

SMTP

D

ICMP

相似考题

1.Which three of the protocols below belong to the application layer? (Select three answer choices)A. ARPB. HTTPSC. SMTPD. CDPE. TFTPF. ICMP

2.A multicast router may receive thousands of multicast(71)every day for different groups. If a router has no knowledge about the membership status of the(72), it must broadcast all of these packets. This creates a lot of traffic and consumes(73). A better solution is to keep a list of groups in the network for which there is at least one loyal member.(74)helps the multicast router create and update this list. For each group, there is one router that has the duty of distributing the(75)packets destined for that group. This means that if there are three multicast routers connected to a network, their lists of groupids are mutually exclusive. A host or multicast router can have membership in a group.A．packetsB．errorsC．reportsD．alarms

3.Which of the following protocols defaults to port 161?()A.SFTPB.SNMPC.SMTPD.SNTP

4.Which one of the following protocols uses both UDP and TCP ports for the transport layer operation?A．FTPB．TFTPC．SMTPD．TelnetE．DNS

更多“单选题Which of the following protocols requests membership to a multicast group?（）A IGMPB SNMPC SMTPD ICMP”相关问题

  • 第1题：

    Which of the following protocols uses UDP to transfer files?()

    A.FTP

    B.SFTP

    C.SMTP

    D.TFTP


    参考答案：D

  • 第2题：

    Which of the following protocols utilize UDP as the layer 4 transport mechanism?()

    A.TACACS

    B.Telnet

    C.SMTP

    D.SNMP

    E.HTTP

    F.TFTP


    参考答案：D, F

  • 第3题：

    Which two statements are true about Internet Group Management Protocol (IGMP) snooping?()

    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.


    参考答案：C, D

  • 第4题：

    Which statement is true of a source that wants to transmit multicast traffic to group 239.1.1.1？（）

    • A、Before sending traffic, it must first join  multicast group 239.1.1.1 by sending an IGMPv2 membership report to the default router on the local subnet.
    • B、It must send an IGMPv2 Request to Send  packet and then wait for an IGMPv2 Clear to Send packet from the IGMPv2 querier router on the local subnet
    • C、It may begin transmitting multicast traffic to the group only when there is no other host transmitting to the group on the local subnet.
    • D、It may transmit multicast traffic to the group at any time. 

    正确答案:D

  • 第5题：

    Which three IP multicast group concepts are true?（）

    • 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 receive 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 multicast group will rece ive it.
    • F、A router must be a member of a multicast group to receive multicast data.

    正确答案:D,E,F

  • 第6题：

    Which three of the protocols below belong to the application layer?（）

    • A、ARP
    • B、HTTPS
    • C、SMTP
    • D、CDP
    • E、TFTP
    • F、ICMP

    正确答案:B,C,E

  • 第7题：

    Which two statements are true about Internet Group Management Protocol (IGMP) snooping?（）

    • 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.

    正确答案:C,D

  • 第8题：

    Which of the following protocols defaults to port 161?（）

    • A、SFTP
    • B、SNMP
    • C、SMTP
    • D、SNTP

    正确答案:B

  • 第9题：

    Which of the following protocols uses port 443 by default?（）

    • A、LDAP
    • B、SNMP
    • C、HTTPS
    • D、HTTP

    正确答案:C

  • 第10题：

    Which of the following server roles provides a common time to all computers？（）

    • A、NTP
    • B、SNMP
    • C、SMTP
    • D、RAS

    正确答案:A

  • 第11题：

    多选题
    Which three IP multicast group concepts are true?（）
    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.


    正确答案： A,B
    解析： 暂无解析

  • 第12题：

    单选题
    Which of the following protocols would be used to test if one host is reachable by another host， by sending echo requests and waiting for echo replies？（）
    A

    SNMP

    B

    ICMP

    C

    TCP

    D

    UDP


    正确答案： D
    解析： 暂无解析

  • 第13题：

    Which of the following protocols utilize TCP?()

    A. NTP

    B. NNTP

    C. SMTP

    D. SNMP

    E. HTTPS

    F. TFTP


    参考答案：B, C, E

  • 第14题：

    Which three IP multicast group concepts are true?()

    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.


    参考答案：D, E, F

  • 第15题：

    Which tech nology manages multicast traffic at Layer 2 by configuring Layer 2 LAN interfaces dynamically to forward multicast traffic only to those interfaces that want to receive it?（）

    • A、IGMP
    • B、IGMP snooping
    • C、PIM - DM
    • D、DVMRP
    • E、MOS PF

    正确答案:B

  • 第16题：

    Which of the following protocols utilize UDP as the layer 4 transport mechanism?（）

    • A、TACACS
    • B、Telnet
    • C、SMTP
    • D、SNMP
    • E、HTTP
    • F、TFTP

    正确答案:D,F

  • 第17题：

    Which of the following protocols would be used to test if one host is reachable by another host， by sending echo requests and waiting for echo replies？（）

    • A、SNMP
    • B、ICMP
    • C、TCP
    • D、UDP

    正确答案:B

  • 第18题：

    Which of the following protocols utilize TCP?（）

    • A、NTP
    • B、NNTP
    • C、SMTP
    • D、SNMP
    • E、HTTPS
    • F、TFTP

    正确答案:B,C,E

  • 第19题：

    Which three IP multicast group concepts are true？ （Choose three.） （）

    • A、 If a packet is sent to a multicast group address， all members of the multicast group will receive it
    • B、 If a packet is sent to a multicast group address， the multicast frame contains the source multicast  address
    • C、 A router does not have to be a member of a multicast group to receive multicast data.
    • D、 A router does not have to be a member of a multicast group to send to the group.
    • E、 A router must be a member of a multicast group to receive multicast data.
    • F、 A router must be a member of a multicast group to send to the group.

    正确答案:A,D,E

  • 第20题：

    Which of the following protocols encrypt communication?（）

    • A、HTTPS
    • B、TELNET
    • C、SMTP
    • D、DNS
    • E、SSH

    正确答案:A,E

  • 第21题：

    Which of the following protocols requests membership to a multicast group?（）

    • A、IGMP
    • B、SNMP
    • C、SMTP
    • D、ICMP

    正确答案:A

  • 第22题：

    单选题
    Which statement is true of a source that wants to transmit multicast traffic to group 239.1.1.1？（）
    A

    Before sending traffic, it must first join  multicast group 239.1.1.1 by sending an IGMPv2 membership report to the default router on the local subnet.

    B

    It must send an IGMPv2 Request to Send  packet and then wait for an IGMPv2 Clear to Send packet from the IGMPv2 querier router on the local subnet

    C

    It may begin transmitting multicast traffic to the group only when there is no other host transmitting to the group on the local subnet.

    D

    It may transmit multicast traffic to the group at any time. 


    正确答案： A
    解析： 暂无解析

  • 第23题：

    多选题
    Which three IP multicast group concepts are true?（）
    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 receive 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 multicast group will rece ive it.

    F

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


    正确答案： F,B
    解析： 暂无解析

相关内容