ITN 100

Nonreturn to zero is a type of unipolar signaling.

False

One major drawback to a client-server network lies in the fact that client-server networks enable software and hardware from different vendors to be used together.

False

The application architecture called the distributed computing model uses the "thick" client approach.

False

_____________ can be thought of as dividing the circuit horizontally.

Frequency division multiplexing

______________ controls errors by detecting and correcting them at the receiving end without retransmission of the original message.

Hamming Code

Which of the following is a term used to group together the physical and data link layers?

Hardware layers

Which standards body is responsible for the development of local area network (LAN) standards?

IEEE

The network layer of the Internet model uses the _____________ protocol to route messages though the network.

IP

If a signal with a frequency of 500 MHz combines with a another signal of 1500 MHz and they form a new signal of 2000 MHz; this is an example of:

Intermodulation noise

Which of the following is not a key advantage of digital transmission?

It permits only low transmission rates.

The software that runs on the mail server is referred to as the ____________.

Mail transfer agent

A ________ is a very large general-purpose computer that is capable of performing very many functions as if these are done simultaneously, and storing extremely large amounts of data.

Mainframe

The acronym, MIME, refers to:

Multipurpose Internet Mail Extension

In a ___________ architecture, computers are both client and server, thus sharing the work.

Peer-to-peer

The ____________ layer of the OSI model is responsible for data format translation.

Presentation

One perspective of data communications and networking as stated in the textbook, examines the management of networking technologies, including security, network design, and managing the network on a day-to-day basis and long term basis.

True

One type of forward error correction is the Hamming code.

True

Point-to-point Protocol is a byte-count-oriented protocol.

True

Scalability refers to the ability to increase or decrease the capacity of the computing infrastructure in response to changing capacity needs.

True

The "local loop" refers to the wires that run from the customer premises to the telephone switch of the telephone company.

True

The simplest method for error correction is retransmission.

True

Web-based e-mail like Hotmail is an example of three-tier client-server architecture that provides access to e-mail messages.

True

A(n) _________-tiered architecture uses only two sets of computers: one set of clients and one set of servers.

Two

To interact with the World Wide Web, a client computer needs an application layer software package called a:

Web Browser

If a computer transmits a message containing "ABC" and the destination computer receives "abc" as the message, the message is corrupted.

true

A coding scheme that uses 10 bits to represent each character is capable of representing _________ different characters.

1024

The typical range of human hearing is:

20 to 14,000 Hz

____________ is one of the most commonly used coding schemes used in data transmission.

ASCII

Which of the following is true about ISO:

All of the Above

Impulse noise is caused by the thermal agitation of electrons.

False

BYOD stands for?

Bring Your Own Device

In data transmission, data errors are uniformly distributed in time.

False

Which of the following is not a controlled access method of media access control?

CSMA/CD

Which of the following is not true about a server?

Can only preform one function on a network

A _________ is an FDM device that splits the physical circuit into three logical circuits (phone, upstream data, downstream data).

DSL Modem

Which of the following would be a standard used at the Data Link layer of the Internet or OSI model?

Ethernet

A "thin client" approach places most of the application logic on the client.

False

A request header for an HTTP request starts with a command, such as GET, and ends with the HTTP version number that the browser understands.

False

In the three tier architecture the software on the client computer is responsible for ____________.

Presentation Logic

_____________ refers to the difference between the original analog data and the approximation of that data using the techniques for translating from analog data to digital signals.

Quantizing error

The most commonly used e-mail standard is:

Simple Mail Transfer Protocol

Which layer of the OSI model is responsible for ensuring that all packets sent are received by the destination station by dealing with end-to-end issues?

Transport Layer

Amplitude, frequency and phase are all characteristics of a sound wave.

True

Bandwidth is the difference between the highest and lowest frequencies in a band.

True

Cloud computing is now available on the client side (i.e. the desktop).

True

Coding schemes are groups of bits that translate into the "alphabet" of any given system.

True

Due to recent advances in high speed communication networks, the information lag, or the time it takes for information to be disseminated around the world, has been significantly shortened.

True

ARQ means that:

a receiver that detects an error in a message simply asks the sender to retransmit the message until it is received without error

Using parity, the probability for detecting an error, given that one has occurred, is:

about 50% for either even or odd parity

A(n) __________ is the way in which the functions of the application layer software are spread among the clients and servers in the network.

application architecture

The loss of power a signal suffers as it travels from the transmitting computer to a receiving computer is:

attenuation

Which of the following is a function of the transport layer?

breaking long messages into several smaller messages

Which of the following is a characteristic of sound waves that can be modulated to convert digital data into analog signals?

phase

The representation of the character A by the group of 8 bits, 01000001, is an example of:

digital coding

The primary reason for networking standards is to:

ensure that hardware and software produced by different vendors can work together

Most computer networks managed by a host mainframe computer use contention media access control.

false

With contention, a computer does not have to wait before it can transmit. A computer can transmit at anytime.

false

In communication protocols, _________ are used to convey the user's meaning.

information bits

The first sublayer of the data link layer is the

logical link control sublayer

A MOOC is an example of a(n)

massively online technology

Which of the following would be considered a type of wireless media?

microwave

The acronym, Modem, stands for _________________.

modulator/demodulator

A(n) ___________ divides one high-speed communication circuit into several lower speed circuits for the primary reason of saving communication line costs.

multiplexer

The _________ layer is responsible for routing of messages from the sender to the final destination.

network

Data communications and networking can be considered as a global area of study because:

new technologies and applications emerge from a variety of countries and spread around the world and the technologies enable global communication

________ is the presentation of information to the user and the acceptance of the user's commands.

presentation logic

Which is not a function of the physical layer:

providing error-free transmission of data.

On digital circuits, we use _________ to reshape the incoming signal and prevent attenuation.

repeaters

Which of the following is not a function of the data link layer?

specifying the type of connection, and the electrical signals, radio waves, or light pulses that pass through it

Another term for impulse noise is:

spikes

The primary source of error in data communications is:

spikes

As part of the five-layer network model used in this textbook, the data link layer sits directly between:

the physical and the network layers

How are the application architecture functions split up in a client-server network?

the presentation logic is on the client, while the data storage and data access logic are on the server