下列那一指令可用来连接及监听TCP/UDP port?()A、ncB、netstatC、lsofD、telnet
下列那一指令可用来连接及监听TCP/UDP port?()
- A、nc
- B、netstat
- C、lsof
- D、telnet
相关考题:
下列关于TCP和UDP的描述正确的是______。A.TCP和UDP均是面向连接的B.TCP和UDP均是无连接的C.TCP是面向连接的,UDP是无连接的D.UDP是面向连接的,TCP是无连接的
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
Which protocol supports LDP sessions?() A. SIP (port 626)B. TCP (port 646)C. UDP (port 606)D. IP (protocol code LDP)
缺省情况下,SNMP网管(manager)向SNMP代理(agent)发送读、写请求报文时目的端口为(),而接收SNMP代理主动上报的trap报文时监听端口为()。 A.tcp 162,tcp 161B.udp 162,udp 161C.tcp 161,tcp 162D.udp 161,udp 162
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
Which protocol and port have been assigned by IANA for RADIUS authentication?()A、UDP/1812B、UDP/1813C、TCP/1812D、TCP/1813
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
What is the port number of the IPsec Authentication Header packet?()A、IP protocol 50B、TCP port 51C、UDP port 50D、IP protocol 51E、UDP port 51F、TCP port 50
Which two ports are used with RADIUS authentication and authorization?()A、UDP port 1812B、UDP port 2000C、TCP port 2002D、UDP port 1645
Which ports must be left open if an administrator plans to perform Dynamic LPAR operations?()A、 port 21(ftp):tcp and port 657(rmc):tcpB、 port 22(ssh):tcp and port 657(rmc):udpC、 port 657(rmc):tcp and port 657(rmc):udpD、 port 161(snmp):tcp and port 161(snmp):udp
Which protocol supports LDP sessions?()A、SIP (port 626)B、TCP (port 646)C、UDP (port 606)D、IP (protocol code LDP)
What is the port number of an IPsec Encapsulating Security Payload packet?()A、IP protocol 50B、IP protocol 51C、TCP port 50D、TCP port 51E、UDP port 50F、UDP port 51
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 2020B、UDP port 1967C、TCP port 2020D、ICMP port 1967
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
TCP/IP的第四层有两个协议,分别是TCP和UDP,TCP协议的特点是什么?UDP协议的特点是什么?()。A、TCP提供面向连接的路服务,UDP提供无连接的数据报服务B、TCP提供面向连接的路服务,UDP提供有连接的数据报服务C、UDP提供面向连接的路服务,TCP提供有连接的数据报服务D、UDP提供面向连接的路服务,TCP提供无连接的数据报服务
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):tcpB port 22(ssh):tcp and port 657(rmc):udpC port 657(rmc):tcp and port 657(rmc):udpD port 161(snmp):tcp and port 161(snmp):udp
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()ADestination-port是可选参数BDestination-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