Networking Chapter 2 A

Regarding Baseband and Broadband, which of the following are true?

• Baseband carries only one channel of data

• Broadband carries multiple channels using frequency division multiplying

• Baseband is used to describe ethernet throughput and Broadband describes coaxial throughput

• Baseband refers to throughput and broadband refers to bandwidth

What is the difference between bit rate and baud rate?

• Bitrate does not take into consideration network overhead; baud rate is theoretical

• Baud rate refers to the number of symbols per second (which may be larger than 1 bit each); bit rate is the number of bits per second

• Bit rate is a measure of a network overall and baud rate is a measure of a network's modem

• The terms mean the same thing.

Multiplexing is best defined as:

• The process of combining different messages into a unified communications stream

• The process of modifying a carrier wave to transport data long distances

• Transmitting multiple carriers (channels) of different frequencies across a given medium at the same time

• Combining a clock signal to keep the transmission synchronized and prevent errors

Which of the following multiplexing methods breaks conversations into separate frames which then 'take turns' using a single channel?

• SDM

• FDM

• TDM

• TCP/IP

The network's physical layer has no concept of addressing or message content; it's just a stream of bits going from one end the cable to another.

• True

• False

The Media Access Control sublayer of the OSI Data Link Layer:

• Manages the physical address unique to each node

• Is responsible for passing the token in a token ring network

• Sees data simply as an endless stream of bits going 'down the wire'

• Works with the presentation layer in the OSI model to ensure proper display of data

Data networks typically rely on Simplex transmissions.

• True

• False

In a half-duplex connection:

• both sides have a dedicated data path they can use whenever they want

• the direction of data flow typically changes with needs of the network so both sides safely share the lane

• information goes from point A to point B, but never in the other direction

• typically changes data direction on a fixed schedule to conserve network resources

Point to Point networks tend utilize _______________connections to facilitate smooth data flow.

• Full Duplex

• Half Duplex

• Simplex

• Twin Simplex

In a TDR network, a token may be used to:

• Limit connectivity of a 'chatty' host

• Make the most efficient use of time slots by ensuring only a host that needs to transmit is allocated a time slot

• Modulate the network speed to that of the slowest host to ensure all have full connectivity

• Serve as a method of network authentication