Aloha and Slotted Aloha

In ________ each station sends a frame whenever it has a frame to send.

• pure ALOHA

• slotted ALOHA

In pure ALOHA, the vulnerable time is ______ the frame transmission time.

• two times

• three times

The maximum throughput for pure ALOHA is ________ per cent.

• 12.2

• 18.4

In __________, each station is forced to send only at the beginning of the time slot.

• pure ALOHA

• slotted Aloha

In slotted ALOHA, the vulnerable time is ______ the frame transmission time.

• the same as

• two times

To avoid collisions on wireless networks, ________was invented.

• CSMA/CA

• CSMA/CD

The vulnerable time for CSMA is the _______ as propagation time.

• the same

• two times

type which improves the efficiency of pure Aloha

• Slotted Aloha

• Pure Aloha

Collision of frames Result in

• Destroyed Data

• Save Data

FDMA, TDMA & CDMA

• Channelization Protocols

• Bit oriented protocol