20 Jan Question 10 To encipher means

COM548 Advanced Networking Protocols

EXAM 4

Question 1 Consider WEP for 802.11. Suppose that the data is 10101100 and the keystream is 11110000. What is the resulting ciphertext?

Question 1 options:

01010010

01011100

01011010

01010100

Question 2 An application gateway works in conjunction with a router filter because:

Question 2 options:

it will provide more services.

traffic is forced to go to the application gateway first before the filter.

the filter forces the users to first connect to the application gateway.

all of the above.

Question 3 The Authentication Header (AH) protocol provides source authentication and data integrity but does not provide confidentiality.

Question 3 options:

True

False

Question 4 Suppose an SSL session employs a block cipher with CBC. The server sends to the client the IV in the clear.

Question 4 options:

True

False

Question 5 In what way does the public-key encrypted message hash provide a better digital signature than the public-key encrypted message?

Question 5 options:

More secure (hashing and encrypting)

Faster

More convenience

All of the above

Question 6 A firewall sits between the organization’s network and the public network.

Question 6 options:

True

False

Question 7 A Certification Authority verifies that an entity is who it says it is, and creates a certificate that binds the public key of the entity to the identity.

Question 7 options:

True

False

Question 8 A message authentication code (MAC) does not require an encryption algorithm.

Question 8 options:

True

False

Question 9 The security of RSA relies on the fact that there are no know algorithms for quickly factoring a number.

Question 9 options:

True

False

Question 10 To encipher means to decrypt, decode, or convert, ciphertext into the equivalent plaintext.

Question 10 options:

True

False