CCNA 1 capter 9

1

In the graphic, Host A has reached 50% completion in sending a 1 KB Ethernet frame to

Host D when Host B wishes to transmit its own frame to Host C. What must Host B do?

Host B can transmit immediately since it is connected on its own cable segment.

Host B must wait to receive a CSMA transmission from the hub, to signal its turn.

Host B must send a request signal to Host A by transmitting an interframe gap.

**Host B must wait until it is certain that Host A has completed sending its frame.

2

Ethernet operates at which layers of the OSI model? (Choose two.)

Network layer

Transport layer

**Physical layer

Application layer

Session layer

**Data-link layer

3

Which of the following describe interframe spacing? (Choose two.)

**the minimum interval, measured in bit-times, that any station must wait before sending

another frame

the maximum interval, measured in bit-times, that any station must wait before sending

another frame

the 96-bit payload padding inserted into a frame to achieve a legal frame size

the 96-bit frame padding transmitted between frames to achieve proper synchronization

**the time allowed for slow stations to process a frame and prepare for the next frame

the maximum interval within which a station must send another frame to avoid being

considered unreachable

4

What three primary functions does data link layer encapsulation provide? (Choose three.)

**addressing

**error detection

**frame delimiting

port identification

path determination

IP address resolut

ion

5

When a collision occurs in a network using CSMA/CD, how do hosts with data to

transmit respond after the backoff period has expired?

**The hosts return to a listen-before-transmit mode.