Authentic Protocols

Question 1

(authentication) Authentication is confirming something that is _________ or true.

Answer 1

authentic

Question 2

(authentication) In computers, authentication is the process of verifying the identity of a ____, such as a username or ________.

Answer 2

user, password

Question 3

(authentication) In the world of networking, there are several protocols that are used to achieve authentication;

Answer 3

• PAP (Password Authentication Protocol)
• CHAP (Challenge Handshake Authentication Protocol)
• MS-CHAP (Microsoft Challenge Handshake Protocol)
• RADIUS (Remote Authentication Dial-In Service)
• Kerberos- Authentication
• EAP (Extensible Authentication Protocol)

Question 4

(PAP) PAP stands for?

Answer 4

Password Authentication Protocol

Question 5

(PAP) PAP is a simple authentication protocol that is compatible with just about __________.

Answer 5

everything

Question 6

(PAP) But the downside to PAP is that it is not very ____. All sensitive data, like usernames and passwords, are sent in _____ ____.

Answer 6

safe, clear, text

Question 7

(CHAP) Challenge Handshake Authentication Protocol or CHAP is a better alternative to PAP because it encrypts _________ and _________.

Answer 7

usernames, passwords

Question 8

(CHAP) CHAP authenticates by the server asking or challenging the client to validate itself by using a _____-___ _________.

Answer 8

three, way, handshake

Question 9

(CHAP) So, after a connection has been made, the server sends a challenge to the ______. Then, the client responds by using a one-way hash function with the ______. Then, the server checks the response against its own calculation, and if the value matches, then the authentication is ______.

Answer 9

client, answer, passed

Question 10

(MS-CHAP) MS-CHAP is __________ version of CHAP.

Answer 10

Microsoft’s

Question 11

(MS-CHAP) There are two versions of MS-CHAP:

Answer 11

MS-CHAP and MS-CHAP2.

Question 12

(MS-CHAP) MS-CHAP is basically CHAP, so it only authenticates the ______.

Answer 12

client

Question 13

(MS-CHAP) But MS-CHAP2 offers mutual ______________, both the client and the server are authenticated, so it’s more ______.

Answer 13

authentication, secure

Question 14

(RADIUS) RADIUS stands for?

Answer 14

Remote Authentication Dial-In Service

Question 15

(RADIUS) RADIUS is a protocol that enables a ______ ______, such as a domain controller, to handle all ______________.

Answer 15

single, server, authentication

Question 16

(RADIUS) It allows a company to store ____ ______ ____ in a central location.

Answer 16

user, access, data

Question 17

(RADIUS) Users log into the RADIUS server, and that makes the request on the user’s behalf after _____________.

Answer 17

authenticating

Question 18

(Kerberos) Kerberos is an authentication protocol that was developed by MIT, and it authenticates by using _______.

Answer 18

tickets

Question 19

(Kerberos) In order for a client to access network resources, it first authenticates itself with the Kerberos ______. Then, after authentication, the client is issued a ticket, which then gives the client access to the _______ __________.

Answer 19

server, network, resources

Question 20

(EAP) EAP stands for __________ ______________ ________, and this is an extension to PPP.

Answer 20

Extensible, Authentication, Protocol

Question 21

(EAP) It’s a general protocol that supports many methods of authentication, and the most common one that it’s associated with is _____ _____.

Answer 21

smart, cards