Chapter 12 – Secure Communications and Network Attacks

Question 1

1. ________ is a layer 2 connection mechanism that uses packet-switching technology to establish virtual circuits between the communication endpoints.
   Frame relay

Answer 1

Frame relay

Question 2

2. Tunnel connections can be established over all except for which of the following?
   Stand-alone systems

Answer 2

Stand-alone systems

Question 3

3. ______ is a standards-based mechanism for providing encryption for point-to-point TCP/IP traffic.
   IPsec

Answer 3

IPsec

Question 4

4. Which of the following IP address is not a private IP address as defined by RFC 1918?
5. 254.1.119

Answer 4

169.254.1.119

Question 5

5. Which of the following cannot be linked over VPN?

Two systems without an intermediary network connection

Answer 5

Two systems without an intermediary network connection

Question 6

6. What is needed to allow an external client to initiate a communication session with an internal system if the network uses a NAT proxy?
   Static model NAT

Answer 6

Static model NAT

Question 7

7. Which of the following VPN protocols do not offer native data encryption (Choose all that apply.)
   L2F,L2TP,PPTP

Answer 7

L2F,L2TP,PPTP

Question 8

8. At which OSI model layer does the IPsec protocol function?
   Network

Answer 8

Network

Question 9

9. What technology allows for phone conversations to occur over an existing TCP/IP network and internet connection?
   VoIP

Answer 9

VoIP

Question 10

10. Which of the following is not a benefit of NAT?

Filtering network traffic to prevent brute-force attacks

Answer 10

Filtering network traffic to prevent brute-force attacks