单选题A networking device that sends packets to all connections is a:（）A gateway.B hub.C switch.D router.

题目
单选题
A networking device that sends packets to all connections is a:（）
A

gateway.

B

hub.

C

switch.

D

router.

相似考题

1.All traffic, be it e-mail or streaming video, travels via a method called packet switching, (97)parcels out digital data into small chunks, or packets, and sends them over a network shared bycountless users.A.soB.whichC.andD.who

2.Regarding PAR (Positive Acknowledgement and Re－transmission), which of the answer choices below are correct?()A. The source device will only retransmit lost packets on the request of the destination device.B. The source device starts a timer when it sends a segment and retransmits if an acknowledgment is not received before the timer expires.C. The destination device acknowledges receipt of a segment by sending a packet with a new sequence number and the ACK bit sent.D. The destination device acknowledges receipt of a segment by sending a packet that indicates the next sequence number it expects.E. If the destination device does not receive a segment, all segments are retransmitted.F. The source device keeps a record of all segments sent and expects and acknowledgment of each.

3.What does a router do if it has no EIGRP feasible successor route to a destination network and the successor route to that destination network is inactive status?()A. It routes all traffic that is addresses to the destination network to the interface indicates in the routing table.B. It sends a copy of its neighbor table to all adjacent routers.C. It sends a multicast query packet to all adjacent neighbors requesting available routing paths to the destination network.D. It broadcasts Hello packets to all routers in the network to re-establish neighbor adjacencies.

4.Which two statements are true about TCP communication?()A. The receiver acknowledges the final packet in each communications stream.B. The receiver adds sequencing numbers to the packets received.C. The sender adds sequencing numbers to the packets it sends.D. The receiver acknowledges each packet it receives from the sending device.

更多“单选题A networking device that sends packets to all connections is a:（）A gateway.B hub.C switch.D router.”相关问题

  • 第1题：

    What is the effect of the following access list condition access－list 101 permit ip 10.25.30.0 0.0.0.255 any()。

    A.permit all packets matching the first three octets of the source address to all destinations

    B.permit all packets matching the last octet of the destination address and accept all source addresses

    C.permit all packets from the third subnet of the network address to all destinations

    D.permit all packets matching the host bits in the source address to all destinations

    E.permit all packets to destinations matching the first three octets in the destination address


    参考答案：A

  • 第2题：

    What are two characteristics of Telnet? (Choose two.)（）

    • A、It sends data in clear text format.
    • B、It is no longer supported on Cisco network devices.
    • C、It is more secure than SSH
    • D、It requires an enterprise license in order to be implemented.
    • E、It requires that the destination device be configured to support Telnet connections.

    正确答案:A,E

  • 第3题：

    Which statement is true regarding an Ethernet collision domain?（）

    • A、If a router is used, the collision domain includes all devices connected to the router.
    • B、If a hub is used, the collision domain is limited to each device and the hub.
    • C、If a switch is used, the collision domain is limited to each device and the switch.
    • D、If a bridge is used, the collision domain includes all devices connected to the bridge.

    正确答案:C

  • 第4题：

    A networking device that sends packets to all connections is a:（）

    • A、gateway.
    • B、hub.
    • C、switch.
    • D、router.

    正确答案:B

  • 第5题：

    How does a switch respond when it receives a message?（）

    • A、It reads the Layer-5 information and sends the message directly to the intended computer.
    • B、It reads the Media Access Control (MAC) address and sends the message directly to the intended computer.
    • C、It reads the Layer-5 information and broadcasts the message to all the computers that are connected to the switch.
    • D、It reads the Media Access Control (MAC) address and broadcasts the message to all the computers that are connected to the switch.

    正确答案:B

  • 第6题：

    Which two statements are true regarding an Ethernet collision domain?（）

    • A、If a switch is used, the collision domain is limited to each device and the switch.
    • B、If a hub is used, the collision domain is limited to each device and the hub.
    • C、If a hub is used, the collision domain includes all devices connected to the hub.
    • D、If a switch is used, the collision domain includes all devices connected to the switch.

    正确答案:A,C

  • 第7题：

    Two devices on an Ethernet segment sent frames at the same time causing a collision. Which two statements are true?（）

    • A、Both devices stop transmiting, wait a random period of time, verify the wire is idle, and re-transmit
    • B、The device with the lowest MAC address is permitted to retrannsmit first
    • C、The device with the lowest MAC address sends a jam signal to notify all other devices of the collision
    • D、Both devices send a jam signal to notify all other devices of the collision

    正确答案:A,D

  • 第8题：

    单选题
    What does a router do if it has no EIGRP feasible successor route to a destination network and the successor route to that destination network is inactive status?（）
    A

    It routes all traffic that is addresses to the destination network to the interface indicates in the routing table.

    B

    It sends a copy of its neighbor table to all adjacent routers.

    C

    It sends a multicast query packet to all adjacent neighbors requesting available routing paths to the destination network.

    D

    It broadcasts Hello packets to all routers in the network to re-establish neighbor adjacencies.


    正确答案： D
    解析： 暂无解析

  • 第9题：

    多选题
    Which two statements are true about TCP communication?（）
    A

    The receiver acknowledges the final packet in each communications stream.

    B

    The receiver adds sequencing numbers to the packets received.

    C

    The sender adds sequencing numbers to the packets it sends.

    D

    The receiver acknowledges each packet it receives from the sending device.


    正确答案： A,B
    解析： 暂无解析

  • 第10题：

    单选题
    If the PFE does not have a route to the destination address of a packet, which action will be taken?（）
    A

    The PFE floods the packet out of all interfaces.

    B

    The PFE drops the packet and sends a destination unreachable notification back to source device.

    C

    The PFE forwards the packet to the routing engine for furtherprocessing.

    D

    The PFE queues the packet and sends are quest for a layer3 lookup to the routing engine.


    正确答案： A
    解析： 暂无解析

  • 第11题：

    单选题
    Which process occurs first during the Ethernet Discovery Stage process for a PPPoE service offering?（）
    A

    The ERX router sends an Active Discovery Offer message.

    B

    The ERX router sends an Active Discovery Initiation message.

    C

    The customer device sends an Active Discovery Offer message.

    D

    The customer device sends an Active Discovery Initiation message


    正确答案： D
    解析： 暂无解析

  • 第12题：

    多选题
    What are two characteristics of Telnet? (Choose two.)（）
    A

    It sends data in clear text format.

    B

    It is no longer supported on Cisco network devices.

    C

    It is more secure than SSH

    D

    It requires an enterprise license in order to be implemented.

    E

    It requires that the destination device be configured to support Telnet connections.


    正确答案： B,D
    解析： 暂无解析

  • 第13题：

    what device sends IGMP Query messages？


    正确答案:If using IGMP v1， DR selected via multicast routing protocol will send IGMP query message. If using IGMP v2，querier selected using IGMP query messages will send IGMP query messages. IGMP Query messages are sent by routers. If more than one router is attached to the subnet， the router with the lowest IP address is the querier.

  • 第14题：

    Which two statements are true about TCP communication?（）

    • A、The receiver acknowledges the final packet in each communications stream.
    • B、The receiver adds sequencing numbers to the packets received.
    • C、The sender adds sequencing numbers to the packets it sends.
    • D、The receiver acknowledges each packet it receives from the sending device.

    正确答案:A,C

  • 第15题：

    What is the function of the helper router during a restart event in OSPF?（）

    • A、Sends Rapid Hellos to the restarting router.
    • B、Maintains Adjancency with restarting router.
    • C、Sends periodic DD packets to the restarting router.
    • D、Floods Type 9 LSAs to all routers indicating a restarting event.

    正确答案:B

  • 第16题：

    What is the effect of the following access list condition access-list 101 permit ip 10.25.30.0 0.0.0.255 any（）。

    • A、permit all packets matching the first three octets of the source address to all destinations
    • B、permit all packets matching the last octet of the destination address and accept all source addresses
    • C、permit all packets from the third subnet of the network address to all destinations
    • D、permit all packets matching the host bits in the source address to all destinations
    • E、permit all packets to destinations matching the first three octets in the destination address

    正确答案:A

  • 第17题：

    Which process occurs first during the Ethernet Discovery Stage process for a PPPoE service offering?（）

    • A、The ERX router sends an Active Discovery Offer message.
    • B、The ERX router sends an Active Discovery Initiation message.
    • C、The customer device sends an Active Discovery Offer message.
    • D、The customer device sends an Active Discovery Initiation message

    正确答案:D

  • 第18题：

    If the PFE does not have a route to the destination address of a packet, which action will be taken?（）

    • A、The PFE floods the packet out of all interfaces.
    • B、The PFE drops the packet and sends a destination unreachable notification back to source device.
    • C、The PFE forwards the packet to the routing engine for furtherprocessing.
    • D、The PFE queues the packet and sends are quest for a layer3 lookup to the routing engine.

    正确答案:B

  • 第19题：

    单选题
    What is the effect of the following access list condition?  access-list 101 permit ip 10.25.30.0 0.0.0.255 any（）。
    A

    permit all packets matching the first three octets of the source address to all destinations

    B

    permit all packets matching the last octet of the destination address and accept all source addresses

    C

    permit all packets from the third subnet of the network address to all destinations

    D

    permit all packets matching the host bits in the source address to all destinations

    E

    permit all packets to destinations matching the first three octets in the destination address


    正确答案： B
    解析： 暂无解析

  • 第20题：

    单选题
    A networking device that sends packets to all connections is a:（）
    A

    gateway.

    B

    hub.

    C

    switch.

    D

    router.


    正确答案： B
    解析： 暂无解析

  • 第21题：

    单选题
    Which statement best describes the application of link fragmentation and interleaving （LFI）？（）
    A

    It compresses the Layer 2 payload and marks the packet as a high priority to be transmitted first

    B

    It fragments larger packets and allows VoIP packets to be transmitted in between them.

    C

    It stops the transmission of large packets when priority packets arrive.

    D

    It sends high priority packets in between normal traffic packets.


    正确答案： B
    解析： 暂无解析

  • 第22题：

    单选题
    Which process occurs first during the Ethernet Discovery Stage process for a PPPoE service offering?（）
    A

    The ERX router sends an Active Discovery Off ermessage.

    B

    The ERX router sendsan Active Discovery Initiation message.

    C

    The customer device sends an Active Discovery Offer message.

    D

    The customer device sends an Active Discovery Initiation message.


    正确答案： D
    解析： 暂无解析

  • 第23题：

    多选题
    Two devices on an Ethernet segment sent frames at the same time causing a collision. Which two statements are true?（）
    A

    Both devices stop transmiting, wait a random period of time, verify the wire is idle, and re-transmit

    B

    The device with the lowest MAC address is permitted to retrannsmit first

    C

    The device with the lowest MAC address sends a jam signal to notify all other devices of the collision

    D

    Both devices send a jam signal to notify all other devices of the collision


    正确答案： C,D
    解析： 暂无解析

  • 第24题：

    问答题
    what device sends IGMP Query messages？

    正确答案： If using IGMP v1， DR selected via multicast routing protocol will send IGMP query message. If using IGMP v2，querier selected using IGMP query messages will send IGMP query messages. IGMP Query messages are sent by routers. If more than one router is attached to the subnet， the router with the lowest IP address is the querier.
    解析： 暂无解析

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