Chapter 9

Question 1

What is the mathematical value that is used to provide an integrity check for the packet in question? (204)

Answer 1

Checksum

Question 2

If the data is corrupted while in transit, this checksum will? (204)

Answer 2

Alert the receiver of the problem and the packet will be dropped by the receiving computer.

Question 3

What suite of protocols was introduced to provide a series of cryptographic algorithms that can be used to provide security for all TCP/IP hosts at the Internet layer? (204)

Answer 3

IPSec

Question 4

IPSec has two principle goals, what are they? (204)

Answer 4

• To protect the contents of IP packets
• To provide a defense against network attacks through packet filtering and the enforcement of trusted communication

Question 5

What type of attack is where an attacker moniters and reads packets? (204)

Answer 5

Packet Sniffing

Question 6

Packet Sniffing use what type of software to moniter packets? (204)

Answer 6

A Packet Sniffer (e.g. Wireshark)

Question 7

What type of attack is when attackers modify packets and then forwards them to the destination? (205)

Answer 7

Data Modification

Question 8

What type of attack is when an attacker pretends to be the destination or source IP? (205)

Answer 8

Identity Spoofing

Question 9

What type of attack is where someone between the two communicating computers is actively monitoring, capturing, and controlling the data transparently? (205)

Answer 9

Man-in-the-Middle

Question 10

What type of attacks prevents computers from performing normal operations? (205)

Answer 10

Denial of Service Attack (DOS)

Question 11

_____ is an end-to-end security technology (205)

Answer 11

IPSec

Question 12

What are the three ways to deploy IPSec? (205)

Answer 12

• Local Area Network (LAN)
• Wide area network (WAN)
• Remote access

Question 13

Typically, both sides require a shared IPSec configuration, which is called a? (205)

Answer 13

IPSec Policy