General CCNA Questions

Question 1

What are the main components of PPP?

Answer 1

1. Encapsulation of datagrams
2. LCP (Linck Control Protocol)
3. NCP (Network Control Protocol)

Question 2

What is the only absolute physical layer requirement imposed by PPP?

Answer 2

The provision of a duplex circuit, either dedicated or switched, that can operate in either an asynchronous or synchronous bit-serial mode, transparent to PPP link layer frames.

Question 3

How many fields make up the PPP frame, and what are they?

Answer 3

There are six fields that make up the PPP frame.

1. Flag
2. Address
3. Control
4. Protocol
5. Data
6. Frame Check Sequence (FCS)

Question 4

How many phases does the PPP LCP go through, and what are they?

Answer 4

There are four phases that the PPP LCP goes through.

1. Link establishment
2. Link quality determination
3. Network layer protocol configuration negotiation
4. Link termination