Chapter 13 Security Filtering

Question 1

T/F L2TP resides at the Network layer of the OSI model ? 437

Answer 1

False

Question 2

PPTP uses two protocols, what are they? 438

Answer 2

Point to point protocol and Generic routing encapsulation protocol

Question 3

In the 90s, this VPN protocol was used vastly for Internet use and was the first to be supported by Microsoft? 438

Answer 3

Point to point tunneling protocol

Question 4

PPTP is also placed at the same layer of the OSI model as L2TP. T/F 438

Answer 4

False. PPTP resides at the application layer

Question 5

Since PPTP was a VPN that was used back in the 90s, what is the VPN standards that is used today in many businesses? 439

Answer 5

IPSec

Question 6

T/F it’s obvious that IPSec runs at the network layer of the OSI Model.

Answer 6

True

Question 7

IPSec works in two modes transport mode and tunneling mode. What does tunneling mode do? 440

Answer 7

Protects all traffic going through the tunnel

Question 8

You are a admin at a company called Zeus A. You have received an important email from a neighboring business Zeus C. The person that sends the email had encrypted the email so that it could be shielded from rival business. You use a special formula to decode the email to its original form. What is this formula? 441

Answer 8

Key.

Question 9

I am a random group of strings of characters that is used in conjunction with the encryption algorithm. What am I ? 441

Answer 9

Encryption key

Question 10

T/F encryption key comes in three ways public, private and and local

Answer 10

False. only private and public

Question 11

You send a encrypted data to your neighboring business. Both you and your receiver has the same encryption key. This key style is known as what? 442

Answer 11

Symmetrical encryption

Question 12

What are the three encryption standards used in the late 1977 to our modern day? 442

Answer 12

DES, 3DES, AES

Question 13

You are a member of the Military working on a document that is deemed classified. After the document have been completed, you have chosen to use the AES encryption standard for better security when transferring the file to another base. What will be the adequate amount of bit key you would use to encode this file? 443

Answer 13

192-256 bit key

Question 14

If having the same encryption key equals symmetrical, then having different encryption keys at each end point makes it a ? 442

Answer 14

Asymmetrical or public key

Question 15

What security protocol will be a great tool to connect two non TCP/IP networks via the Internet? 437

Answer 15

L2TP