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Network Security Practice Test Questions
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Network security consists of the policies, processes and practices adopted to prevent, detect and monitor unauthorized access, misuse, modification, or denial of a computer network and network-accessible resources. (Source: Wikipedia)

Network Security Practice Test Questions
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25 Questions

1. Which of the following commands connect access list 110 inbound to interface ethernet0?
2. Which of the following series of commands will restrict Telnet access to the router?
3. You want to create a standard access list that denies the subnet of the following host: 172.16.198.94/19. Which of the following would you start your list with?
4. What Directive would you use to block access to certain domains if you are using Apache as a proxy server?
5. If you wanted to deny all Telnet connections to only network 192.168.10.0, which command could you use?
6. What command will permit SMTP mail to only host 1.1.1.1?
7. Which of the following is true regarding access lists applied to an interface?
8. You want to create a standard access list that denies the subnet of the following host: 172.16.144.17/21. Which of the following would you start your list with?
9. What is the standard IANA port number used for requesting web pages?
10. Are “Secure” servers really secured?
11. Which of the following is an example of a standard IP access list?
12. One way to limit hostile sniffing on a LAN (Local Area Network) is by installing:
13. What does “chmod 1777 ./” do?
14. If you wanted to deny FTP access from network 200.200.10.0 to network 200.199.11.0 but allow everything else, which of the following command strings is valid?
15. Which router command allows you to view the entire contents of all access lists?
16. Why would you configure virtual hosting with a single daemon rather than multiple daemons?
17. You want to create a standard access list that denies the subnet of the following host: 172.16.50.172/20. Which of the following would you start your list with?
18. Wireless Application Protocol (WAP) has several layers. Which of the following is the security layer?
19. You configure the following access list: access-list 110 deny tcp 10.1.1.128 0.0.0.63 any eq smtp access-list 110 deny tcp any eq 23 int ethernet 0 ip access-group 110 out
What will the result of this access list be?
20. What router command allows you to determine whether an IP access list is enabled on a particular interface?
21. Which of the following access lists will allow only HTTP traffic into network 196.15.7.0?
22. You have created a named access list called Blocksales. Which of the following is a valid command for applying this to packets trying to enter interface s0 of your router?
23. A high profile company has been receiving a high volume of attacks on their website. The network administrator wants to be able to collect information on the attacker(s) so legal action can be taken. What should be implementated?
24. Which of these is NOT a type of firewall?
25. Which of the following are valid ways to refer only to host 172.16.30.55 in an IP access list?1. 172.16.30.55 0.0.0.255
2. 172.16.30.55 0.0.0.0
3. any 172.16.30.55
4. host 172.16.30.55
5. 0.0.0.0 172.16.30.55
6. ip any 172.16.30.55

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