更多“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”相关问题
  • 第1题:

    关于高级访问列表中的destination-port参数,下面描述正确的是()

    • A、Destination-port是可选参数
    • B、Destination-port用于指定UDP或TCP报文的源端口信息
    • C、仅仅在规则指定的协议号是TCP或者UDP时有效
    • D、如果不指定,表示TCP/UDP报文的任何目的端口信息都匹配

    正确答案:A,C,D

  • 第2题:

    What is the port number of an IPsec Encapsulating Security Payfoad packet?()

    • A、UOP port 50
    • B、IP protocol 51
    • C、TCP port 51
    • D、TCP port 50
    • E、IP protocol 50
    • F、UDP port51

    正确答案:E

  • 第3题:

    Which of the following descriptions about IP spoofing is correct?()

    • A、IP source address is forged
    • B、IP destination address is forged
    • C、IP TCP source port is forged
    • D、IP TCP destination port is forged
    • E、None of above

    正确答案:A

  • 第4题:

    You work as a network technician at Company. Your boss, Mrs., is interested in  LWAPP (Lightweight Access Point Protocol).  What should you tell her regarding this technology?  ()

    • A、 LWAPP is a proprietary protocol, and because of its very high overhead it is not widely adopted.
    • B、 Control traffic is encapsulated in UDP packets with a source port of 1024 and a destination port  of 12223.
    • C、 Layer 3 LWAPP is a UDP/IP Frame that requires a Cisco Aironet AP to obtain an IP address  using DHCP.
    • D、 Data traffic is encapsulated in UDP packets with a source port of 1024 and a destination port of  12223.
    • E、 Control traffic is encapsulated in TCP packets with a source port of 1024 and a destination port  of 12223.
    • F、 Data traffic is encapsulated in TCP packets with a source port of 1024 and a destination port of  12223.

    正确答案:B,C

  • 第5题:

    Which ports must be left open if an administrator plans to perform Dynamic LPAR operations?()

    • A、 port 21(ftp):tcp and port 657(rmc):tcp
    • B、 port 22(ssh):tcp and port 657(rmc):udp
    • C、 port 657(rmc):tcp and port 657(rmc):udp
    • D、 port 161(snmp):tcp and port 161(snmp):udp

    正确答案:C

  • 第6题:

    What is the port number of an IPsec Encapsulating Security Payload packet?()

    • A、IP protocol 50
    • B、IP protocol 51
    • C、TCP port 50
    • D、TCP port 51
    • E、UDP port 50
    • F、UDP port 51

    正确答案:A

  • 第7题:

    Which statements about MPLS Label Distribution Protocol(LDP) are valid?()

    • A、LDP hello packets are sent to UDP port 646
    • B、LDP hello packets are sent to TCP port 711
    • C、LDP sessions are TCP sessions to port 646
    • D、LDP sessions are TCP sessions to port 711
    • E、LDP establishes a peer relationship with another router that must be directly attached
    • F、LDP can establishes a peer relationship with another router that is not directly attached

    正确答案:A,C,F

  • 第8题:

    The above bgp configuration has what effect on the configured router?()

    • A、Allows incoming TCP connections destined to port 179
    • B、Allows incoming TCP connections sourced from port 179
    • C、Allows incoming TCP connections from 1.1.1.1 and destined to,or sourced from port 179
    • D、Allows incoming TCP connections from 1.1.1.1 that are destined to port 179
    • E、Allows incoming TCP connections from 1.1.1.1 that are sourced from port 179

    正确答案:D

  • 第9题:

    DNS查询使用以下哪个端口?()

    • A、UDP port 53
    • B、UDP port 23
    • C、TCP port 53
    • D、TCP port 23

    正确答案:A

  • 第10题:

    多选题
    关于高级访问列表中的destination-port参数,下面描述正确的是()
    A

    Destination-port是可选参数

    B

    Destination-port用于指定UDP或TCP报文的源端口信息

    C

    仅仅在规则指定的协议号是TCP或者UDP时有效

    D

    如果不指定,表示TCP/UDP报文的任何目的端口信息都匹配


    正确答案: B,A
    解析: 暂无解析

  • 第11题:

    单选题
    Which of the following descriptions about IP spoofing is correct?()
    A

    IP source address is forged

    B

    IP destination address is forged

    C

    IP TCP source port is forged

    D

    IP TCP destination port is forged

    E

    None of above


    正确答案: C
    解析: 暂无解析

  • 第12题:

    单选题
    Which ports must be left open if an administrator plans to perform Dynamic LPAR operations?()
    A

     port 21(ftp):tcp and port 657(rmc):tcp

    B

     port 22(ssh):tcp and port 657(rmc):udp

    C

     port 657(rmc):tcp and port 657(rmc):udp

    D

     port 161(snmp):tcp and port 161(snmp):udp


    正确答案: A
    解析: 暂无解析

  • 第13题:

    Which protocol and port have been assigned by IANA for RADIUS authentication?()

    • A、UDP/1812
    • B、UDP/1813
    • C、TCP/1812
    • D、TCP/1813

    正确答案:A

  • 第14题:

    What is the port number of the IPsec Authentication Header packet?()

    • A、IP protocol 50
    • B、TCP port 51
    • C、UDP port 50
    • D、IP protocol 51
    • E、UDP port 51
    • F、TCP port 50

    正确答案:D

  • 第15题:

    下面能够表示"禁止从129.9.0.0网段中的主机建立与202.38.16.0网段内的主机的WWW端口的连接"的访问控制列表是()。

    • A、acl101 rule deny tcp source129.9.0.00.0.255.255 destination 202.38.16.00.0.0.255 destination-port equal www
    • B、acl101 rule deny tcp source129.9.0.00.0.255.255 destination 202.38.16.00.0.0.255 destination-port equal 80
    • C、acl100 rule deny udp source129.9.0.00.0.255.255 destination 202.38.16.00.0.0.255 destination-port equal www
    • D、acl99 rule deny udp source129.9.0.00.0.255.255 destination 202.38.16.00.0.0.255 destination-port equal www

    正确答案:A,B

  • 第16题:

    Which two ports are used with RADIUS authentication and authorization?()

    • A、UDP port 1812
    • B、UDP port 2000
    • C、TCP port 2002
    • D、UDP port 1645

    正确答案:A,D

  • 第17题:

    Which protocol supports LDP sessions?()

    • A、SIP (port 626)
    • B、TCP (port 646)
    • C、UDP (port 606)
    • D、IP (protocol code LDP)

    正确答案:B

  • 第18题:

    To initiate testing,  which port does a Cisco IOS IP SLA source use to send a control message to an IP SLA responder? ()

    • A、UDP port 2020
    • B、UDP port 1967
    • C、TCP port 2020
    • D、ICMP port 1967

    正确答案:B

  • 第19题:

    Which information is stored in the stateful session flow table while using a stateful firewall?()

    • A、the inside private IP address and the translated inside global IP address
    • B、the source and destination IP addresses, port numbers,TCP sequencing information, and additional flags for each TCP or UDP connection associated with a particular session
    • C、the outbound and inbound access rules (ACL entries)
    • D、all TCP and UDP header information only

    正确答案:B

  • 第20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21题:

    多选题
    You work as a network technician at Company. Your boss, Mrs., is interested in  LWAPP (Lightweight Access Point Protocol).  What should you tell her regarding this technology?  ()
    A

    LWAPP is a proprietary protocol, and because of its very high overhead it is not widely adopted.

    B

    Control traffic is encapsulated in UDP packets with a source port of 1024 and a destination port  of 12223.

    C

    Layer 3 LWAPP is a UDP/IP Frame that requires a Cisco Aironet AP to obtain an IP address  using DHCP.

    D

    Data traffic is encapsulated in UDP packets with a source port of 1024 and a destination port of  12223.

    E

    Control traffic is encapsulated in TCP packets with a source port of 1024 and a destination port  of 12223.

    F

    Data traffic is encapsulated in TCP packets with a source port of 1024 and a destination port of  12223.


    正确答案: B,E
    解析: 暂无解析

  • 第22题:

    多选题
    Which statements about MPLS Label Distribution Protocol(LDP) are valid?()
    A

    LDP hello packets are sent to UDP port 646

    B

    LDP hello packets are sent to TCP port 711

    C

    LDP sessions are TCP sessions to port 646

    D

    LDP sessions are TCP sessions to port 711

    E

    LDP establishes a peer relationship with another router that must be directly attached

    F

    LDP can establishes a peer relationship with another router that is not directly attached


    正确答案: D,E
    解析: 暂无解析

  • 第23题:

    单选题
    The above bgp configuration has what effect on the configured router?()
    A

    Allows incoming TCP connections destined to port 179

    B

    Allows incoming TCP connections sourced from port 179

    C

    Allows incoming TCP connections from 1.1.1.1 and destined to,or sourced from port 179

    D

    Allows incoming TCP connections from 1.1.1.1 that are destined to port 179

    E

    Allows incoming TCP connections from 1.1.1.1 that are sourced from port 179


    正确答案: D
    解析: 暂无解析