Which of the following traffic types would a network layer firewall be unable to filter?()A.SMTP trafficB.ICMP messagesC.HTTP trafficD.Email sender verification
题目
Which of the following traffic types would a network layer firewall be unable to filter?()
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第1题:
The Hypertext Transfer Protocol , the Web's (请作答此空) protocol , is at the heart of the Web. HTTP is implemented in two programs : a ( ) program and a server program . The client program and server program executing on different end systems , talk to each other by ( ) HTTP messages . HTTP defines how Web clients request Web pages from servers and how servers transfer web pages to clients . when a user ( ) a web page , the browser sends http request messages for the objects in the page to the server . The server ( ) the requests and responds with http response messages that contain the objects .
work( ),systems that effectively isolate an organization's internal network structure from an ( ) network, such as the INTERNET is becoming increasingly popular. These firewall systems typically act as application-layer(请作答此空)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.hosts
B.routers
C.gateways
D.offices
答案:C
解析:
掌握基本词汇,本题还是比较容易的。参考翻译如下:
第3题:
The Hypertext Transfer Protocol,the Web's(请作答此空)protocol,is at the heart of the Web.HTTP is implemented in two programs:a( )program and a server program.The client program and server program executing on different end systems,talk to each other by( )HTTP messages.HTTP defines how Web clients request Web pages from servers and how servers transfer web pages to clients.when a user( )a web page,the browser sends http request messages for the objects in the page to the server.The server( )the requests and responds with http response messages that contain the objects.
work( ),systems that effectively isolate an organization's internal network structure from an (请作答此空) 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.exterior
B.Internal
C.center
D.middle
答案:A
解析:
掌握基本词汇,本题还是比较容易的。参考翻译如下:
第5题:
work( ),systems that effectively isolate an organization'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(请作答此空)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.