CertiGuide to Security+  9  Chapter 4:  Basics of Cryptography (Domain 4.0; 15%)

4.6  Summary 1 4.8  Success Answers

1. The main role of a cryptographic hash function is in the provision of:

A. Message integrity checks and digital signatures

B. Message integrity checks only

C. Digital signatures only

D. Signature algorithm computations

2. What is used to allow verification of the claim that a specific public key does in fact belong to a specific individual?

A. Certificate

B. Key ring

C. SA

D. Ticket

3. To protect the data while in transit on a network, what is used to identify errors and omissions in the information?

A. Record sequence checking

B. Transmission error correction

C. Retransmission controls

D. Hash total

4. A digital certificate contains what data? (choose all that apply)

A. A subject name, which identifies the person or object that the certificate represents.

B. The public key belonging to the subject.

C. The identity of a Certificate Authority (CA) that has signed the certificate to certify that the public key and the identity both belong to the subject.

D. The digital signature of the named CA.

E. An expiration date for the Certificate

5. From the list, select the symmetric algorithms

A. DES

B. RC4

C. IPSec

D. PGP

E. IDEA

6. A digitally signed message offers

A. Authentication of Origin

B. Integrity of Data

C. Non-Repudiation

D. Confidentiality

7. The definition of a Certificate Policy is

A. Found in US Title Code (Federal law)

B. Determined by the CA

C. Both choices are correct

D. No choice is correct

8. What does CPS mean?

A. Cycles Per Second

B. Certificate Practice Statements

C. Certificate Policy Statements

D. Certificate Procedure Statements

E. No choice is correct

9. Certificate Revoking is based on

A. Policy

B. Expiration date

C. Administrator action

D. No choice is correct

E. Some choices are correct

10. Select the protocol that is utilized for management and negotiation of SA's.

A. MD5

B. RC3

C. ISAKMP

D. IDEL

4.6  Summary 1 4.8  Success Answers