question

The four forms of information used by modern information systems are voice, data, image, and video.

answer

True

question

The number of computers and terminals at work in the world today is over 100 million

answer

True

question

Communications technologies using data networks have essentially replaced telephone networks in today's business settings.

answer

False

question

Computerization has enhanced the range of features available to businesses for voice communication.

answer

True

question

The need to store and transmit images has been a driving force in the development of networking technology.

answer

True

question

Video networks in business are used primarily to deliver programming

answer

False

question

Data compression is used to minimize the amount of information that must be transmitted in networks.

answer

True

question

The major cost component for communications is the resource needed to transmit data across distance.

answer

True

question

Wireless networks have the advantage of mobility, but the disadvantage of difficult implementation.

answer

False

question

The basic building block of any communications facility is the transmission line.

answer

True

question

The two media technologies currently driving the evolution of data communications networks are local area networks and cable television networks.

answer

False

question

The most common example of packet switched technology is the modern telephone network.

answer

False

question

The three forces that have driven the architecture and evolution of data communications and networking facilities are

answer

traffic growth, development of services, and advances in technology

question

Which of the following is NOT one of the four types of information found on networks?

answer

control

question

Among the application services lists given below, which lists the services in order such that the desired throughput rates are increasing?

answer

Transaction processing, voice, still image transfers, and large file transfers.

question

Which of the following is NOT one of the main application areas that serve as one of the drivers in determining the design and makeup of enterprise networks?

answer

Transaction processing

question

The concept that describes the merger of previously distinct telephony and information technologies and markets is called

answer

convergence

question

Which of the following is NOT one of the four layers in the model of business-driven convergence?

answer

Networks

question

The types of networks commonly used in businesses today include

answer

Local area networks, wide-area networks, and telephone networks

question

Which of the following is the most commonly used standard for computer communications?

answer

TCP/IP

question

In the past, the data processing function was organized around a single computer. Today, it is much more common to find many computers linked by networks. This approach to data processing is called

answer

distributed computing.

question

Two types of transmission media recently gaining in popularity in business communications are ?

answer

wireless transmission, and fiber optic cables

question

Types of networks commonly used at business premises are called

answer

Wireless local area networks

question

An architecture where multiple computers provide database functions, file services, printing services, and other specialized functions on a shared basis for many users is called a

answer

Client/Server architecture

question

Today, all networked information is sent using digital formats

answer

False

question

A single bit of information represents two states or values.

answer

True

question

The terms byte and octet describe the same amount of information

answer

True

question

Voice communication can only be done using an analog signal

answer

False

question

PBX and Centrex systems provide similar functionality from the users point-of-view.

answer

False

question

Services transmitting video information use a series of vector images to represent moving images.

answer

False

question

System response time and system cost are closely related to each other.

answer

True

question

Response time is extremely important when implementing email systems.

answer

False

question

When transmitting video information, compression ratios can range as high as 100:1 with little loss of perceived quality.

answer

True

question

Interlacing is a method of reducing the bandwidth requirements for video transmissions

answer

True

question

When using analog communications, channel capacity is measure in hertz (Hz) where 1 Hz equals 1000 oscillations per second.

answer

False

question

The United States national version of IRA is referred to as the American Standard Code for Information Interchange (ASCII

answer

True

question

1010

answer

10

question

11

answer

3

question

10

answer

2

question

101

answer

5

question

1111

answer

15

question

represents the most basic unit of digital information

answer

Pixel

question

Standard voice telephone lines, such as those found in residences, limit bandwidth to

answer

3,400 Hz

question

A stereo compact disc typically requires the bandwidth for each channel to be

answer

20,000 Hz

question

When using data communications with 8-bit codes, the number of alphabetic symbols

answer

must be exactly 256.

question

Which of the following is the binary representation of the decimal value 22?

answer

10110

question

Which of the following is the binary representation of the decimal value 24?

answer

11000

question

Which of the following is the binary representation of the decimal value 18?

answer

10010

question

Which of the following is the binary representation of the decimal value 21?

answer

10101

question

A representation of images that uses straight and curved line segments is called

answer

Vector Graphics

question

A representation of images that uses an array of pixels is called

answer

Raster Graphics

question

When using an eight-value gray-scale image, ________ bits per pixel are needed

answer

3 bits per pixel

question

Place the following information types in order by the required data rates with the 1 needing the slowest and 6 needing the fastest.

answer

text, voice, b/w image, color image, cd audio, HDTV

question

Traditionally, data processing has been organized in a distributed model.

answer

False

question

Centralized data processing typically involves terminals connected to large computers in a central data processing facility.

answer

True

question

Intranets use the same communication protocols and applications as the Internet.

answer

True

question

Like the Internet, intranets are difficult to manage.

answer

False

question

Extranets use different protocols and applications than are used in Intranets

answer

False

question

Replicated databases involve copying all or part of the database to additional computers

answer

True

question

A partitioned database is by definition not a replicated database

answer

True

question

The three types of requirements for networking resulting from DDP are connectivity, availability, and performance.

answer

True

question

Which of the following is not a feature of an Intranet?

answer

Is used to distribute content to the general Internet

question

Which of the following typically is not supported by distributed processing

answer

Mainframes

question

Which of the following is not a benefit of distributed data processing

answer

Enhanced centralization of data definitions

question

Which of the following is not a function provided by servers in client/server systems?

answer

Data entry

question

The three ways of organizing data for use by an organization are

answer

centralized, structured, and partitioned.

question

Real-time replication

answer

Two-phase commit

question

Near-real time replication

answer

Cascade or broadcast distribution

question

Deferred replication

answer

Messaging and queing

question

Two types of distributed data processing

answer

Vertical and Horizontal

question

An increasingly common organizational approach for distributed data processing is the

answer

Design Architecture

question

The Internet grew out of a Department of Education project

answer

False

question

ARPANet was the first message-switching network

answer

True

question

When using circuit switching, a dedicated path of transmission facilities is established between the communicating parties.

answer

True

question

When using message switching instead of packet switching, a dedicated path must be established between the parties for all messages that are sent.

answer

False

question

Packet switching is like message switching except that the unit of data sent at one time is limited in size, thus requiring larger messages to be broken into pieces

answer

True

question

A computer connected to the Internet is called a host.

answer

True

question

The National Science Foundation was responsible for many of the policy decisions that led to the modern Internet.

answer

True

question

In the Internet, individual hosts and/or local area networks are connected to an Internet services provider through a point-of-presence.

answer

True

question

Commercial use of the Internet was discouraged until approximately 1988.

answer

False

question

Hosts connected to the Internet are identified by a unique 24-bit number that identifies a network and specific host within that network.

answer

False

question

A paradigm for electronic communications where a dedicated path is opened and maintained during the exchange is called

answer

circuit switching.

question

A paradigm for electronic communications where messages are split into blocks of data with limited size, which are then transmitted one-by-one across the network is

answer

packet switching

question

The first two important applications developed for the ARPANET where

answer

Telnet and FTP.

question

The first "killer application" for the ARPANET was

answer

Email.

question

The development of a internationally distributed collection of multimedia files addressed using universal resource locators led to the

answer

World-wide-web.

question

The problems of using IP numbers for addressing hosts in the Internet are resolved

answer

splitting IP addresses into four octets.

question

The Domain Name System (DNS) is comprised of four elements. Which of the following is NOT one of these elements?

answer

IP addresses

question

The key features of the DNS database are

answer

Variable-depth hierarchy for names, distributed databases, and distribution controlled by the database.

question

Protocol architectures are a set of complementary protocol modules governing communication between entities in a network.

answer

True

question

TCP/IP is a protocol architecture

answer

True

question

UDP provides guaranteed delivery of messages

answer

False

question

LANs and WANs are usually isolated entities.

answer

False

question

A router is a more complex intermediate system than a bridge.

answer

True

question

The key elements of a protocol are

answer

syntax, semantics, and timing.

question

Which of the following is a commonly used set of standards for computer communications?

answer

TCP/IP

question

A device that connects networks with differing addressing schemes, packet sizes and interfaces is called a

answer

router.

question

The current IP specification uses addresses to identify hosts that consist of

answer

32 bits

question

The newer IPv6 specification uses addresses to identify hosts that consist of

answer

128 bits.

question

SAP

answer

Services Access Point

question

PDU

answer

Protocol Data Unit

question

TCP

answer

Transmission Control Protocol

question

IP

answer

Internet Protocol

question

UDD

answer

User Datagram Protocol

question

SMTP

answer

Simple Mail Transfer Protocol

question

FTP

answer

File Transfer Protocol

question

SNMP

answer

Simple Network Management Protocol

question

OSI

answer

Open Systems Interconnection

question

SNA

answer

Systems Network Architecture

question

Database applications are among the most common client-server implementations.

answer

False

question

Most client/server environments emphasize the use of a GUI.

answer

True

question

Middleware is used to overcome lack of standardization.

answer

True

question

Traditional client/server architecture is also called 3-tier architecture.

answer

False

question

Intranets are expensive to implement, but inexpensive to maintain.

answer

False

question

Client-server computing is fundamentally based on networking

answer

True

question

In a 3-tier client-server implementation, the client is typically a "thin client."

answer

True

question

server-based processing model uses a "fat server" rather than a "fat client."

answer

False

question

Implementing an extranet removes the need for a company to maintain a public web site

answer

False

question

Which of the following is not a class of client/server processing?

answer

Network-based processing

question

Advantages of a web/database system as compared to a more traditional database approach include

answer

ease of administration and transaction tracking.

question

Client (DEF)

answer

A computer that houses information for manipulation by networked clients.

question

Middleware (DEF)

answer

A set of function and call programs that allow clients and servers to intercommunicate.

question

Server (DEF)

answer

A networked information requester that can query a database or other information.

question

API (DEF)

answer

Software that improves connectivity between a client application and a server

question

SQL (DEF)

answer

A method for addressing, creating, updating, or querying relational databases

question

API (Name)

answer

Application Programming Interface

question

SQL(Name)

answer

Structured Query Language

question

GUI (Name)

answer

Graphical User Interface

question

RPC (Name)

answer

Remote Procedure Call

question

In general public and Internet mail systems offer access to a wider range of services and more robust applications.

answer

True

question

Upon receipt, the SMTP receiver must decide whether to place the message in the appropriate user mailbox or local outgoing mail queue.

answer

True

question

In order to be compliant, a mail system must include all five of the additional MIME headers

answer

False

question

MIME subtypes of the multi-part type are used to describe how the different parts of a message go together.

answer

True

question

The simplest form of electronic mail is a single-system facility where all users of the facility to exchange messages.

answer

True

question

SMTP is the standard protocol in the TCP/IP protocol suite for transferring email between hosts

answer

True

question

SMTP does not place any requirements on the contents or message bodies of mail it processes

answer

False

question

SMTP returns an end-to-end acknowledgement to the originator to indicate that the message was successfully delivered to the recipient.

answer

False

question

SMTP can be used to send executable files and other binary file types.

answer

False

question

The key driving force behind the Session Initiation Protocol (SIP) is to enable VoIP

answer

True

question

Email functions visible to a user, such as facilities for preparing and submitting messages, filing, replying, and forwarding, are considered

answer

user agent functions.

question

Email functions concerned with the protocol operations needed to transmit and deliver messages are considered

answer

message transfer agent functions.

question

Which of the following is a true statement regarding SMTP processing of messages?

answer

SMTP does not guarantee that all messages are delivered.

question

A widely used extension to the RFC 822 framework that expands what can be sent via email is called

answer

MIME.

question

Which of the following is NOT a standard MIME content type?

answer

Binary

question

When using HTTP, an application program that establishes connections for the purpose of sending requests to a server is called a

answer

client.

question

When using HTTP, a network data object or service that can be identified by a URL is called

answer

resource.

question

When using HTTP, an application program that accepts connections in order to service requests by sending back responses is called a

answer

server.

question

The Session Initiation Protocol (SIP) is an application-level protocol for setting up, modifying, and terminating real-time sessions between participants over an IP network. SIP supports five facets of establishing and terminating multimedia communications. Which of the following is NOT one of these facets?

answer

User type

question

SMTP is not concerned with the format or content of messages, except for two exceptions. Which two of the following are these exceptions?

answer

SMTP adds log information to the start of the delivered message that indicates the path the message took. and SMTP standardizes the message character set as 7-bit ASCII

question

Two notable consumer electronic gadgets that are impacting the traffic load on networks are the digital versatile disc and the digital still camera.

answer

True

question

A digital versatile disc can store approximately 100 times more data than a CD-ROM.

answer

False

question

Typically, more complex routing protocols are used between autonomous systems within a larger internet and relatively simple routing protocols are used within each autonomous system

answer

False

question

A QoS facility allows the Internet to treat all classes of traffic equally in order to optimize the services provided to all users.

answer

False

question

An internet routing protocol is used to exchange information about reachability and traffic delays, allowing each router to construct a next-hop routing table for paths through the internet.

answer

True

question

Which of the following describes class A networks?

answer

Few networks, each with many hosts

question

Which of the following describes class B networks?

answer

Medium number of networks, each with a medium number of hosts

question

Which of the following describes class C networks?

answer

Many networks, each with a few hosts

question

The maximum number of Class A network addresses is

answer

126

question

Network topology refers to the way individual end stations access the network prior to transmission of user data.

answer

True

question

The original commercial Ethernet, as well as the original IEEE 802.3 standard, operated at 100 Mps. 2) _______

answer

True

question

On a bus topology LAN, each station can send and receive data to or from another station independent of other bus activity.

answer

True

question

A MAC frame includes various bit patterns to enable a receiver to correctly recognize key parts of the information contained in the frame.

answer

True

question

In the MAC frame, the start of frame delimited (SFD) provides the receiver with the starting point of meaningful data in the frame.

answer

True

question

Every MAC frame must include two addresses, which allows an alternative receiver to be designated in the event an error occurs.

answer

False

question

Two general approaches to connecting multiple LANs are bridges and switches.

answer

True

question

In general, the performance of a LAN declines with increased lengths of connections and/or the number of devices using it.

answer

True

question

Because of increased functionality of modern layer 2 switches, bridges have been replaced by these types of switches.

answer

False

question

A broadcast recipient address means that all devices connected to the LAN are to receive the message.

answer

True

question

A layer 3 switch is just another name for a router

answer

False

question

Which of the following LAN technologies has the highest capacity?

answer

Gigabit Ethernet

question

Which of the following is not one for the speeds found in modern Ethernet LAN?

answer

10 Mbps

ISM4220 – College Essay

Unlock all answers in this set

Haven't found what you were looking for?

Search for samples, answers to your questions and flashcards