COMPUTER NETWORKING QUIZ

Switch

802.6

Active hub

Gateway

Router

1 - 127

127 - 191

128 - 255

128 - 191

192 - 223

None of these

a code in which each expression conforms to specific rules of construction, so that if certain errors occur in an expression the resulting expression will not conform to the rules of construction and

a set of physical layer standards developed by EIA and intended to replace RS-232-

the ratio of the number of data units in error to the total number of data units

a check bit appended to an array of binary digits to make the sum of the all the binary digits

a technique used by protocols in which a lower level protocol accepts a message from a higher level protocol and places it in the data portion of the low level frame

a technique used in best-effort delivery systems to avoid endlessly looping packets

All of these

None of these

one of the pieces that results when an IP gateway divides an IP datagram into smaller pieces for transmission across a network that cannot handle the original datagram size

79

None of these

70

119

80

the same size as

one bit more than

two bits more

None of these

one bit less than

Multiplexers use Time Division Multiplexing (TDM) while statistical multiplexers use Frequency Division Multiplexing (FDM)

Multiplexers often waste the output link capacity while statistical multiplexers optimize its use

Statistical multiplexers need buffers while multiplexers do not need buffers

Multiplexer use X.25 protocol, while statistical multiplexers use the Aloha protocol

None of these

One device sends and other device receives and vic

One device can send other device can only accepts.

Both stations can transmit and receive data at the

None of these

Identifies multiple interfaces and is only delivered to one address. This address can also be called one-to-one-of-many.

Packets are delivered to all interfaces identified by the address. This is also called a one-to-many address.

These addresses are meant for nonrouting purposes, but they are almost globally unique so it is unlikely they will have an address overlap.

Packets addressed to a unicast address are delivered to a single interface.

simplex

full-duplex

half-duplex

multiplex

None of these