Study Guide for IT 4323 Test 1

In a fully connected mesh topology with six computers, we need ________ links.

15

Which of the following is not one of the characteristics of a data communication system?

All o the choices are correct

Data can flow in both direction all of the times in a _________ mode.

Full-duplex

_______transmission guarantees the data arrive at a fixed rate, such as with TV broadcasts.

Isosynchronous

Data can flow only in one direction all of the times in a _________ mode.

Simplex

In _________transmission, the bit stream is combined into longer frames which may contain multiple bytes.

Synchronous

In the TCP/IP protocol suite, which of the following is an application layer protocol?

The File Transfer Protocol (FTP)

In the TCP/IP protocol suite, which of the following is a network layer protocol?

The Internet Protocol (IP)

In the TCP/IP protocol suite, which of the following is a transport-layer protocol?

The Transmission Control Protocol (TCP)

An ARP reply is normally _______.

Unicast

The transport-layer packet in the TCP/IP protocol suite is called _______________.

a segment or a user datagram

The application layer in the TCP/IP protocol suite is usually considered to be the combination of ________layers in the OSI model.

application, presentation, and session

__________means loss of energy in a signal.

attenuation

Transmission impairment can be caused by ___________.

attenuation & distortion

Analog to analog conversion (modulation) is the representation of analog information by an analog signal. We need modulation if the medium is _________ in nature or if it is the only type of channel available.

bandpass

___________is the range of frequencies contained in a composite signal.

bandwidth

The ____________defines the number of bits that can fill the link between a sender and receiver.

bandwidth-delay product

____________ transmission refers to sending a signal over a channel without changing it to an analog signal.

baseband

For a digital signal, the number of bits sent in 1 second is referred to as the ____________.

bit rate

In baseband communication, the required bandwidth is proportional to the ____________.

bit rate

In the TCP/IP protocol suite, the physical layer is concerned with the movement of _______ over the physical medium.

bits

_________coding provides redundancy and provides inherent error detecting.

block

An ARP request is normally _______.

broadcast

A _______defines the number of data elements sent in 1s.

data rate

In TCP/IP, a message belonging to the network layer is decapsulated from a packet at the ________ layer.

data-link

In the TCP/IP protocol suite, the ______ layer is responsible for moving frames from one hop (node) to the next.

data-link

_________________is the process of changing one of the characteristics of an analog signal based on the information in the digital data.

digital to analog

____means the signal changes in form or shape.

distortion

The TCP/IP protocol suite consists of _______ layers.

five

__________defines how long it takes for an entire message to completely arrive at the destination from the time the first bit is sent out from the source.

latency

A ________ is a local address. Its jurisdiction is over a local network.

link-layer address

Media access control can be presented only in a __________ link(s).

multicast

In TCP/IP, a logical connection between an entity at the network layer can be made with another entity at the ________ layer.

network

In the TCP/IP protocol suite, a logical address is the identifier at the _______________.

network layer

Communication at the data-link layer is ___________________.

node-to-node

In ________mode, one bit is sent with each clock tick across the wire.

serial

If the sender is a host and wants to send a packet to another host on the same network, the logical address that must be mapped to a physical address is ______.

the destination IP address in the datagram header

__________is a measure of how fast we can actually send data through a network.

throughput

Frequency is the rate of change with respect to _______.

time

The_________ layer is responsible for the delivery of a message from one process to another.

transport

In the TCP/IP protocol suite, a port number is the identifier at the____________.

transport layer

Data-link layer of a broadcast link has __________ sublayer(s).

two