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【判断题】
#include"stdio.h"是语句。A.
正确
B.
错误
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举一反三
【单选题】Most firewalls include a special computer called a(n) _______ server to manage communications between the internal networks and the outside world.
A.
node switch
B.
base station
C.
D.
proxy
【单选题】Which kind of table will be used by most firewalls today to keep track of the connections through thefirewall？（）
A.
reflexive ACL
B.
dynamic ACL
C.
queuing
D.
netflow
E.
state
【单选题】Firewalls may best be compared to ______.
A.
customs officers
B.
firemen
C.
doctors
D.
repairmen
【多选题】Which two statements about stateful firewalls in an enterprise network are true ?(choose two)
A.
They are more susceptible to DoS attacks than stateless firewalls
B.
They can filter HTTP and HTTPS traffic in the inbound direction only
C.
They are most effective when placed in front of the router connected to the internet
D.
They can track the number of active TCP connections
E.
They can use information about previous packets to make decisions about future packets
【简答题】The most common methods of protection are passwords for access control, encryption and decryption systems and firewalls.上述句子的准确含义是:A. 最常用的防护方法是用于访问控制的密码、加密和解密系统以及防火墙。 B. 最常见的保护方法是访问控制,加密和解密系统以及防火墙的密码。...
【简答题】The three common types of firewalls: 、 、 。
【单选题】Which of the following is NOT true according to the text?
A.
Firewalls can protect your computer from any hostile attack.
B.
Intruders can hack into virtually any computer.
C.
A changing IP address is relatively safer.
D.
A static IP address leaves a computer vulnerable to outside attacks.
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