更多“What is the port number of an IPsec Encapsulating Security Payfoad packet?()A、UOP port 50B、IP protocol 51C、TCP port 51D、TCP port 50E、IP protocol 50F、UDP port51”相关问题
  • 第1题:

    OSPF作为一个应用层协议,其运行在().

    A.UDP上,Port Number 520

    B.TCP上,Port Number 179

    C.IP上,Protocol Number 89

    D.直接运行数据链路层之上


    参考答案:C

  • 第2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3题:

    OSPF作为一个应用层协议,其运行在().

    • A、UDP上,Port Number 520
    • B、TCP上,Port Number 179
    • C、IP上,Protocol Number 89
    • D、直接运行数据链路层之上

    正确答案:C

  • 第4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5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6题:

    What three pieces of information can be used in an extended access list to filter traffic (Choose three.)()。

    • A、protocol
    • B、VLAN number
    • C、TCP or UDP port numbers
    • D、source switch port number
    • E、source IP address and destination IP address
    • F、source MAC address and destination MAC address

    正确答案:A,C,E

  • 第7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8题:

    In JUNOS Software, which three packet elements can be inspected to determine if asession already exists?()

    • A、IP protocol
    • B、IP time-to-live
    • C、source and destination IP address
    • D、source and destination MAC address
    • E、source and destination TCP/UDP port

    正确答案:A,C,E

  • 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:

    单选题
    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: C
    解析: 暂无解析

  • 第11题:

    单选题
    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: 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:

    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15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16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17题:

    Interface ge-0/0/2.0 of your router is attached to the Internet and is configured with an IP address and network mask of 71.33.252.17/24. A host with IP address 10.20.20.1 is running an HTTP service on TCP port 8080. This host isattached to the ge-0/0/0.0 interface of your router. You must use interface-based static NAT to make the HTTP service on the host reachable from the Internet. On which IP address and TCP port can Internet hosts reach the HTTP service?()

    • A、IP address 10.10.10.1 and TCP port 8080
    • B、IP address 71.33.252.17 and TCP port 80
    • C、IP address 71.33.251.19 and TCP port 80
    • D、IP address 71.33.252.19 and TCP port 8080

    正确答案:D

  • 第18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19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
    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22题:

    单选题
    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: B
    解析: 暂无解析

  • 第23题:

    单选题
    Which protocol below uses TCP port 443?()
    A

    HTML

    B

    HTTPS

    C

    TFTP

    D

    Telnet

    E

    SMTP


    正确答案: E
    解析: 暂无解析