Security(Computer Aptitude > Networking ) Questions and answers for exam Preparation

Computer Aptitude > Networking

SECURITY MCQs

Total Questions : 19 | Page 1 of 2 pages

Question 1. Which of the following is true regarding access lists applied to an interface?

You can place as many access lists as you want on any interface until you run out of memory.
You can apply only one access list on any interface.
One access list may be configured, per direction, for each layer 3 protocol configured on an interface.
You can apply two access lists to any interface.

Discuss Question

Answer: Option C. -> One access list may be configured, per direction, for each layer 3 protocol configured on an interface.

Question 2. Which command would you use to apply an access list to a router interface?

ip access-list 101 out
access-list ip 101 in
ip access-group 101 in
access-group ip 101 in

Discuss Question

Answer: Option C. -> ip access-group 101 in

Question 3. Which of the following is an example of a standard IP access list?

access-list 110 permit host 1.1.1.1
access-list 1 deny 172.16.10.1 0.0.0.0
access-list 1 permit 172.16.10.1 255.255.0.0
access-list standard 1.1.1.1

Discuss Question

Answer: Option B. -> access-list 1 deny 172.16.10.1 0.0.0.0

Question 4. You are working on a router that has established privilege levels that restrict access to certain functions. You discover that you are not able to execute the command show running-configuration. How can you view and confirm the access lists that have been applied to the Ethernet 0 interface on your router?

show access-lists
show interface Ethernet 0
show ip access-lists
show ip interface Ethernet 0

Discuss Question

Answer: Option D. -> show ip interface Ethernet 0

Question 5. You need to create an access list that will prevent hosts in the network range of 192.168.160.0 to 192.168.191.0. Which of the following lists will you use?

access-list 10 deny 192.168.160.0 255.255.224.0
access-list 10 deny 192.168.160.0 0.0.191.255
access-list 10 deny 192.168.160.0 0.0.31.255
access-list 10 deny 192.168.0.0 0.0.31.255

Discuss Question

Answer: Option C. -> access-list 10 deny 192.168.160.0 0.0.31.255

Question 6. What command will permit SMTP mail to only host 1.1.1.1?

access-list 10 permit smtp host 1.1.1.1
access-list 110 permit ip smtp host 1.1.1.1
access-list 10 permit tcp any host 1.1.1.1 eq smtp
access-list 110 permit tcp any host 1.1.1.1 eq smtp

Discuss Question

Answer: Option D. -> access-list 110 permit tcp any host 1.1.1.1 eq smtp

Question 7. 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?

access-list 10 deny 172.16.48.0 255.255.240.0
access-list 10 deny 172.16.0.0 0.0.255.255
access-list 10 deny 172.16.64.0 0.0.31.255
access-list 10 deny 172.16.48.0 0.0.15.255

Discuss Question

Answer: Option D. -> access-list 10 deny 172.16.48.0 0.0.15.255

Question 8. What router command allows you to determine whether an IP access list is enabled on a particular interface?

show ip port
show access-lists
show ip interface
show access-lists interface

Discuss Question

Answer: Option C. -> show ip interface

Question 9. 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?

(config)# ip access-group 110 in
(config-if)# ip access-group 110 in
(config-if)# ip access-group Blocksales in
(config-if)# blocksales ip access-list in

Discuss Question

Answer: Option C. -> (config-if)# ip access-group Blocksales in

Question 10. 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?