单选题On which destination port in the Layer 4 header does BGP listen?（）A UDP port 169B TCP port 169C UDP port 179D TCP port 179

题目
单选题
On which destination port in the Layer 4 header does BGP listen?（）
A

UDP port 169

B

TCP port 169

C

UDP port 179

D

TCP port 179

相似考题

1.Regarding DHCP (dynamic host configuration protocol), which two of the following choices below are true? (Select two answer choices)A. The DHCP Discover message uses FF-FF-FF-FF-FF as the Layer 2 destination address.B. The DHCP Discover message uses UDP as the transport layer protocol.C. The DHCP Discover message uses a special Layer 2 multicast address as the destination address.D. The DHCP Discover message uses TCP as the transport layer protocol.E. The DHCP Discover message does not use a Layer 2 destination address.F. The DHCP Discover message does not require a transport layer protocol.

2.On which destination port in the Layer 4 header does BGP listen?()A. UDP port 169B. TCP port 169C. UDP port 179D. TCP port 179

3.At which layer of the OSI model does error checking occur with IPv6?()A. Layer 2B. Layer 3C. Layer 4D. Layer 7

4.Which OSI layer header contains the address of a destination host that is on another network?A. ApplicationB. PresentationC. SessionD. TransportE. NetworkF. Data linkG. Physical

更多“On which destination port in the Layer 4 header does BGP lis”相关问题

  • 第1题：

    At which of the following layers does the TCP protocol operate?()

    A.Layer 1

    B.Layer 4

    C.Layer 6

    D.Layer 7


    参考答案：B

  • 第2题：

    Which of the following is a characteristic of a data center core？（）

    • A、 Server-to-server traffic always remains in the core layer.
    • B、 The recommended practice is for the core infrastructure to be in Layer 3.
    • C、 The boundary between Layer 2 and Layer 3 should be implemented in the aggregation layer.
    • D、 The Cisco Express Forwarding hashing algorithm is the default， based on the IP address andLayer 4 port.
    • E、 Core layer should run BGP along with an IGP because iBGP has a lower administrativedistance than any IGP.

    正确答案:B

  • 第3题：

    Which OSI layer header contains the address of a destination host that is another network?（）

    • A、application
    • B、presentation
    • C、session
    • D、transport
    • E、network
    • F、data link
    • G、physical

    正确答案:E

  • 第4题：

    When an IP packet is Layer 3-switched from a source in one VLAN to a destination in another VLAN,which field in a packet will be rewritten? （）

    • A、Layer 2 TTL
    • B、Layer 3 TTL
    • C、Layer 3 source address
    • D、Layer 3 transport protocol
    • E、Layer 3 destination address

    正确答案:B

  • 第5题：

    Regarding DHCP (dynamic host configuration protocol), which two of the following choices below are true?（）

    • A、The DHCP Discover message uses FF-FF-FF-FF-FF as the Layer 2 destination address.
    • B、The DHCP Discover message uses UDP as the transport layer protocol.
    • C、The DHCP Discover message uses a special Layer 2 multicast address as the destination address.
    • D、The DHCP Discover message uses TCP as the transport layer protocol.
    • E、The DHCP Discover message does not use a Layer 2 destination address.
    • F、The DHCP Discover message does not require a transport layer protocol.

    正确答案:A,B

  • 第6题：

    Which of the following statements are true regarding Layer 3 switches？（Choose all that apply.）（）

    • A、A routed port does not run STP or DTP
    • B、A routed port is considered to be in a down state if it is not operational at both Layer 1 andLayer 2
    • C、An SVI is considered to be in a down state if it is not operational at both Layer 1 and Layer 2
    • D、An SVI is considered to be in a down state only when none of the ports in the correspondingVLAN are active
    • E、An SVI port does not run 5TP or DTP
    • F、To create a trunk， an SVI can be logically divided into subinterfaces

    正确答案:A,B,D

  • 第7题：

    At which of the following layers does the UDP protocol operate?（）

    • A、Layer 1
    • B、Layer 4
    • C、Layer 6
    • D、Layer 7

    正确答案:B

  • 第8题：

    On which destination port in the Layer 4 header does BGP listen?（）

    • A、UDP port 169
    • B、TCP port 169
    • C、UDP port 179
    • D、TCP port 179

    正确答案:D

  • 第9题：

    单选题
    Which header or set of headers does CRTP compress？ （）
    A

    Layer 2

    B

    Layer 3

    C

    Layer 4

    D

    Layer 2 and Layer 3

    E

    Layer 3 and Layer 4


    正确答案： E
    解析： 暂无解析

  • 第10题：

    单选题
    Which of the following is a characteristic of a data center core？（）
    A

     Server-to-server traffic always remains in the core layer.

    B

     The recommended practice is for the core infrastructure to be in Layer 3.

    C

     The boundary between Layer 2 and Layer 3 should be implemented in the aggregation layer.

    D

     The Cisco Express Forwarding hashing algorithm is the default， based on the IP address andLayer 4 port.

    E

     Core layer should run BGP along with an IGP because iBGP has a lower administrativedistance than any IGP.


    正确答案： B
    解析： 暂无解析

  • 第11题：

    单选题
    Which of the following is a characteristic of a data center core?（）
    A

    Server-to-server traffic always remains in the core layer.

    B

    The recommended practice is for the core infrastructure to be in Layer 3.

    C

    The boundary between Layer 2 and Layer 3 should be implemented in the aggregation layer.

    D

    The Cisco Express Forwarding hashing algorithm is the default, based on the IP address and Layer 4 port.

    E

    Core layer should run BGP along with an IGP becauseiBGP has a lower administrative distance than any IGP.


    正确答案： B
    解析： 暂无解析

  • 第12题：

    单选题
    Which QoS preclassification option will require the use of the qos pre-classify command for the VPN traffic？ （）
    A

    VPN traffic needs to be classified based on the Layer2 header information

    B

    VPN traffic needs to be classified based on the IP precedence or DSCP

    C

    VPN traffic needs to be classified based on IP flow or Layer 3 information， such as source and destination IP address

    D

    VPN traffic with Authentication Header （AH） needs to preserve the ToS byte


    正确答案： C
    解析： 暂无解析

  • 第13题：

    What does a Layer 2 switch use to decide where to forward a received frame?()

    A. source MAC address

    B. source IP address

    C. source switch port

    D. destination IP address

    E. destination port address

    F. destination MAC address


    参考答案：F

  • 第14题：

    When an IP packet is Layer 3-switched from a source in one VLAN to a destination in anotherVLAN, which field in a packet will be rewritten? （）

    • A、Layer 2 TTL
    • B、Layer 3 TTL
    • C、Layer 3 source address
    • D、Layer 3 transport protocol
    • E、Layer 3 destination address

    正确答案:B

  • 第15题：

    Which of the following is a characteristic of a data center core?（）

    • A、Server-to-server traffic always remains in the core layer.
    • B、The recommended practice is for the core infrastructure to be in Layer 3.
    • C、The boundary between Layer 2 and Layer 3 should be implemented in the aggregation layer.
    • D、The Cisco Express Forwarding hashing algorithm is the default, based on the IP address and Layer 4 port.
    • E、Core layer should run BGP along with an IGP becauseiBGP has a lower administrative distance than any IGP.

    正确答案:B

  • 第16题：

    What does a Layer 2 switch use to decide where to forward a received frame?（）

    • A、source MAC address
    • B、source IP address
    • C、source switch port
    • D、destination IP address
    • E、destination port address
    • F、destination MAC address

    正确答案:F

  • 第17题：

    Which header or set of headers does CRTP compress？ （）

    • A、Layer 2
    • B、Layer 3
    • C、Layer 4
    • D、Layer 2 and Layer 3
    • E、Layer 3 and Layer 4

    正确答案:E

  • 第18题：

    Where is the MPLS label imposed？（）

    • A、after the Layer 3 header and before the Layer 2 payload
    • B、after the Layer 3 header and before the Layer 4 payload
    • C、after the Layer 2 header and before the Layer 1 payload
    • D、after the Layer 1 header and before the Layer 2 payload
    • E、after the Layer 2 header and before the Layer 3 payload

    正确答案:E

  • 第19题：

    At which layer of the OSI model does error checking occur with IPv6?（）

    • A、Layer 2
    • B、Layer 3
    • C、Layer 4
    • D、Layer 7

    正确答案:C

  • 第20题：

    When an SRX series device receives an ESP packet, what happens?（）

    • A、If the destination address of the outer IP header of the ESP packet matches the IP address of the ingress interface, it will
    • B、If the destination IP address in the outer IP header of ESP does not match the IP address of the ingress interface, it will
    • C、If the destination address of the outer IP header of the ESP packet matches the IP address of the ingress interface, based packet.
    • D、If the destination address of the outer IP header of the ESP packet matches the IP address of the ingress interface, based of inner header, it will decrypt the packet.

    正确答案:C

  • 第21题：

    多选题
    Which of the following statements are true regarding Layer 3 switches？（Choose all that apply.）（）
    A

    A routed port does not run STP or DTP

    B

    A routed port is considered to be in a down state if it is not operational at both Layer 1 andLayer 2

    C

    An SVI is considered to be in a down state if it is not operational at both Layer 1 and Layer 2

    D

    An SVI is considered to be in a down state only when none of the ports in the correspondingVLAN are active

    E

    An SVI port does not run 5TP or DTP

    F

    To create a trunk， an SVI can be logically divided into subinterfaces


    正确答案： B,A
    解析： 暂无解析

  • 第22题：

    单选题
    Which OSI layer header contains the address of a destination host that is another network?（）
    A

    application

    B

    presentation

    C

    session

    D

    transport

    E

    network

    F

    data link

    G

    physical


    正确答案： F
    解析： 暂无解析

  • 第23题：

    单选题
    When an SRX series device receives an ESP packet, what happens?（）
    A

    If the destination address of the outer IP header of the ESP packet matches the IP address of the ingress interface, it will

    B

    If the destination IP address in the outer IP header of ESP does not match the IP address of the ingress interface, it will

    C

    If the destination address of the outer IP header of the ESP packet matches the IP address of the ingress interface, based packet.

    D

    If the destination address of the outer IP header of the ESP packet matches the IP address of the ingress interface, based of inner header, it will decrypt the packet.


    正确答案： D
    解析： 暂无解析

  • 第24题：

    单选题
    Where is the MPLS label imposed？（）
    A

    after the Layer 3 header and before the Layer 2 payload

    B

    after the Layer 3 header and before the Layer 4 payload

    C

    after the Layer 2 header and before the Layer 1 payload

    D

    after the Layer 1 header and before the Layer 2 payload

    E

    after the Layer 2 header and before the Layer 3 payload


    正确答案： A
    解析： 暂无解析

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