Compute Science (M.Sc)

Q: The Acme Corporation is implementing dial-up services to enable remote-office employees to connect to the local network. The company uses multiple routed protocols, needs authentication of users connecting to the network, and since some calls will be long distance, needs callback support. Which of the following protocols is the best choice for these remote services?

(a) :  802.1
(b) :  Frame Relay
(c) :  HDLC
(d) :  PPP
(e) :  None of the above
Answer:  PPP
Explanation:  PPP is your only option, as HDLC and Frame Relay do not support these types of business requirements. PPP provides dynamic addressing, authentication using PAP or CHAP, and callback services.

Q: In a one-to-many relationship, the entity that is on the one side of the relationship is called a(n) ________ entity.

(a) :  parent
(b) :  child
(c) :  instance
(d) :  subtype
(e) :  none
Answer:  parent
Explanation:  

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