DIG 6206 Lecture 11

ALOHA belongs to which category of network protocols?

• Channelization Protocol

• Random-Access Protocol

• Routing Protocol

The pure ALOHA protocol relies on ________ from the receiver to ensure that the transmission is successful.

• Carrier Sensing

• Collision Detection

• Acknowledgment

In which of the following MAC schemes will there be only full overlapping of frames in case of a collision?

• CSMA/CD

• Slotted ALOHA

• Pure ALOHA

In the _______ random-access method collision is avoided.

• CSMA/CD

• CSMA/CA

• ALOHA

In the _______ random-access method, stations do not sense the medium.

• CSMA/CA

• ALOHA

• CSMA/CD

We need RTS and CTS packets in ____________ protocol.

• CSMA/CA

• CSMA/CD

• ALOHA

________ combines multiple signals onto a single channel, while ______ allows multiple devices to share the same channel.

• Multiple-access, Multiplexing

• Multiplexing, Multiple-access

______ assigns multiple subcarriers to a single user, while allocates subcarriers dynamically to multiple users.

• FDM, OFDMA

• OFDM, OFDMA

• OFDMA, OFDM

• OFDMA, FDM