A.Telnet
B.TCP
C.SNMP
D.UDP
第1题:
The use of network( ),systems that effectively isolate an organization&39;s internal network structure from an( )network, such as the INTERNET is becoming increasingly popular. These firewall systems typically act as application-layer( )between networks, usually offering controlled TELNET, FTP, and SMTP access. With the emergence of more sophisticated( )layer protocols designed to facilitate global information discovery , there exists a need to provide a general ( )for these protocols to transparently and securely traverse a firewall.
A.safeguardsB.firewallsC.routersD.switches A.exteriorB.InternalC.centreD.middle A.hostsB.routersC.gatewaysD.officesA.networkB.sessionC.transmissionD.application A.frameworkB.internetworkC.computerD.application
第2题:
第3题:
第4题:
A. Layer 2
B. Layer 3
C. Layer 4
D. Layer 5
E. Layer 6
F. Layer 7
第5题:
第6题: