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Which of the following allows a program or port through a software firewall?（）A、ExceptionB、Pass-throughC、Port-forwardingD、Punch-through
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Which of the following protocols defaults to port 161?（）A、SFTPB、SNMPC、SMTPD、SNTP
Which of the following ports would have to be allowed through a firewall to allow SNMP traffic topass on its default port?（） (Select TWO).A、22B、23C、143D、161E、162F、8080
An administrator replaces the network card in a web server. After replacing the network card some users can access the server but others cannot. Which of the following is the FIRST thing the administrator should check？（）A、 Default gatewayB、 The ports on the switchC、 Port security on the servers switch portD、 Ethernet cable
Which of the following server roles synchronizes time throughout the network？（）A、DNSB、NTPC、DHCPD、SMTP
An administrator replaces the network card in a web server. After replacing the network card some users can access the server but others cannot. Which of the following is the FIRST thing the administrator should check?（）A、Default gatewayB、The ports on the switchC、Port security on the server's switch portD、Ethernet cable
Which of the following is the default port for telnet？（）A、20B、21C、22D、23
