MIS 4123 Exam I — Quizzes

If the highest frequency of a circuit is 10KHZ and the lowest frequency is 900 Hz, the bandwidth available for this circuit is:

9100 Hz

A backbone network is:

A high speed central network that connects other networks in a distance spanning up to several miles

Having a conversation with someone using a cellular phone is an example of _________ transmission

Full-duplex

The two-tier e-mail architecture does not require any application software on the client computer

False

Fiber optic cable carries signals in traditional electrical form

False

In simplex transmission, the data flows in both directions at the same time

False

Marc Andreessen led a team that developed the first graphical Web browser, which was called:

Mosaic

Which is not a function of the physical layer:

Providing error-free transmission of data

____________ is a modulation technique that combines two different amplitude combinations with eight different phase combinations modulation to send four bits per symbol

Quadrature amplitude modulation

In the Internet model, the application layer corresponds to the ________ layer(s) of the OSI model

Session, presentation and application

A(n) __________ circuit is another name for a multipoint configuration

Shared

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

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

Standards

A/n _____ connect BNs and MAN

Wide area network

A local area network is:

A group of personal computers or terminals located in the same general area and connected by a common cable (communication circuit) so they can exchange information such as a set of rooms, a single building, or a set of well-connected buildings

Newer telephone circuits, built during the last decade, offer higher quality because they were built using analog transmission

False

The longer the distance of a telephone wire between sender and recipient, the lower the bandwidth across that wire

False

The most frequently used database in organizations is Microsoft Access

False

The transport layer has a local responsibility

False

With respect to costs for a client-server network, personal computers used as clients in a client-server network cost about the same as mainframes for the same amount of computing power

False

Which of the following media has the lowest error rates and the highest transmission speeds?

Fiber optic cable

The acronym, HTML, refers to:

Hypertext Markup Language

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

IEEE

A/n _____ is a LAN that uses the same technologies as the Internet but is open to only those inside the organization

Intranet

An n-tier architecture:

Is generally more "scalable" than a three-tiered architecture

A/n _____ is a group of computers located in the same general area

Local area network

____________ refers to the transmission characteristics of the circuit

Logical circuit

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

Mail transfer agent

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 of the OSI model is responsible for data format translation

Presentation

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

Presentation logic

A(n) _____________ is a set of rules that determine what a layer would do and provides a clearly defined set of messages that software at the layer needs to understand

Protocol

One of the most frequently used Telnet applications is

PuTTY

When all bits of a character are transferred one after another, the bits are transferred in ___________ mode

Serial

___________ is an orderly close to a dialogue between end users

Session termination

Each server on a network that needs to act as a web server needs an application layer software package called a(n)

Web server

Bandwidth is constant across any wire, therefore distance is not relevant to its capacity

True

The specification stage of the de jure standardization process consists of developing nomenclature and identifying the problems to be addressed

True

A junior network administrator has used the wrong cable type to connect his/her computer to the administrative port on a router and cannot establish a terminal session with the device. What layer of the Internet model does this problem appear to reside at?

Physical

Which is not true about point-to-point circuits?

Point-to-point circuits reduce the amount of cable required and use the circuit more efficiently than multipoint circuits

Which of the following is not true about de jure standards?

They are always developed before de facto standards

It is not uncommon for companies to end up spending more money on network management & security tasks than they do on the actual computer equipment itself

True

Microwave transmissions require a line of sight between any two points

True

The fundamental problem in client-based networks is that all data on the server must travel to the client for processing

True

The medium is the physical matter or substance that carries the voice or data transmission

True

The Internet standards organization that will allow anyone to join is

IETF

Frequency division multiplexing divides the circuit into a set of different time slots

False

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

1024

When sending four bits at a time using frequency modulation, the number of different frequency levels that would be needed would be

16

When converting analog voice data to digital signals, Pulse Code Modulation typically samples the incoming voice signal _______ times per second

8,000

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

ASCII

Which of the following is true about ISO: It makes technical recommendations about data communications interfaces Its name stands for International Organization for Standardization It is based in Geneva, Switzerland It is one of the most important standards-making bodies

All of the above

In a multipoint circuit configuration, each computer has a dedicated circuit between itself and each of the other computers in the network

False

A network administrator has received several reports from users of the network that the intranet website on one of company servers is not accessible, but the same users are still able to retrieve their email being stored on the same server. What layer of the Internet model does this problem appear to reside at?

Application

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

Breaking long messages into several smaller messages

When a user accesses an application via a web browser on their mobile device, this is referred to as

Browser-based approach

Which of the following is not true about a server?

Can only perform one function on a network.

Client-server architectures:

Can use middleware to provide a standard way of communicating between software from more than one vendor

What technique is used by most videoconferencing applications to reduce the amount of data being transmitted?

Compression

Which of the following is not a property of a WAN:

Connects a group of computers in a small geographic area such as room, floor, building or campus

With the two-tier client-server architecture, the server is responsible for the ________ logic

Data access

___________ is not a type of digital signaling technique

Data rate signaling

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

Digital coding

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

Ethernet

A/n _____ uses the same technologies as the Internet but is provided to invited users outside the organization who access it over the Internet

Extranet

A local area network (LAN) connects other LANs and backbone networks (BNs) located in different areas to each other and to wide area networks in a span from 3 to 30 miles

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

All IoT technologies are connected to the Internet by WIFI

False

An application architecture is the way in which the functions of the application layer are performed solely by the clients in the network

False

Based on the TIA/EIA 568-B structured cabling standard, the cabling that runs from the telecommunications closet to each work area is called backbone cabling

False

Baud rate is the number of bits transmitted per second

False

_____________ 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

Time (non-statistical) division multiplexing differs from frequency division multiplexing because it:

Splits the communication circuit vertically (with time slots) instead of horizontally

When you send an email from the US to Europe, it likely is transmitted from one continent to another through one of the ______ that connect America and Europe

Submarine cables

_____________ is not a form of modulation used to transform digital data into analog signals

Synchronous time division

Which of the following is not an application layer standard?

T1

The room that contains the cable termination points and the distribution frames is referred to as

Telecommunications closet

Which of the following is not true about de facto standards?

They never evolve into de jure standards

The idea for a special hypertext network, called the World Wide Web, was conceived of by:

Tim Berners-Lee at the European Laboratory for Particle Physics (CERN) in 1989

The fourth layer of the OSI model is called the __________ layer

Transport

ANSI is a voting participant in the ISO

True

At the transport later in the internet model, TCP is responsible for breaking large files received from the application later into smaller messages & opening a connection to a server for transferring them

True

Cloud-hosted virtual desktops are now available through a service called DaaS allowing users to access the same client computer (virtual desktop) from any computer and any location

True

Data communication standards enable each layer in the sending computer to communicate with its corresponding layer in the receiving computer

True

In the OSI model, the application layer provides a set of utilities for applications and is the end user's access to the network.

True

To get more "bandwidth" in a digital transmission, you must:

increase the range of frequencies available for a transmission