Chapter 6.3

Question 1

Define the network operating system (NOS)

Answer 1

system software that controls the computer systems and devices on a network and allows them to communicate with each other

-It manages computer network resources such as data, and applications and ensures security

Question 2

Define network management software

Answer 2

Software that enables a manager on a networked desktop to monitor the use of individual computers and shared hardware, scan for viruses and ensure compliance with software licenses

Question 3

List the network management products

Answer 3

-Fault detection

-Performance

of which both employ the simple network management protocol (SNMP) to obtain key information from individual network components

Question 4

Functions of Performance Management software

Answer 4

Sends messages to the various devices to sample their performance and to determine if they are operating within acceptable levels

Question 5

Functions of fault management software

Answer 5

It alerts information systems staff in real-time when a device is failing

Question 6

Define the world wide web

Answer 6

all the public websites or pages that users can access on their local computers and other devices through the internet.

These pages and documents are interconnected through hyperlinks that users click on for information

Question 7

Define encryption

Answer 7

The process of converting an original message into a form that can be understood only by the intended receiver

Question 8

Define encryption key

Answer 8

A variable value that is applied to a set of unencrypted text to produce encrypted text or to decrypt text

Question 9

What are the main approaches of wireless networks?

Answer 9

-WEP (Wired Network Privacy)
-WPA (Wifi Protected Access)

Question 10

What is a VPN (Virtual private Network)

Answer 10

A private network that uses a public network to connect multiple remote locations

Question 11

Explain HTML (Hyper Text Markup Language)

Answer 11

The standard page description language for web pages

Question 12

Explain Extensible Markup Language (XML)

Answer 12

The markup language for web documents containing structured information

Question 13

What are web browsers?

Answer 13

Software that creates a unique, hypermedia-based menu on the computer screen providing a graphical interface to the web

Question 14

What is an applet

Answer 14

A small program embedded in web pages

Question 15

Define JAVA

Answer 15

An object-oriented programming language based on C++ that allows applets to be embedded within an HTML document

Question 16

List the various Internet applications

Answer 16

-E-mail
-Telnet
-FTP (File Transfer Protocol)
-Intranets and extranets

Question 17

Explain Telnet

Answer 17

It enables you to log on to other computers on the Internet to gain access to their publicly available files. Telnet is particularly useful for perusing library holdings and large databases. It is also called remote logon

Question 18

Functions of FTP

Answer 18

Its used to transfer files between computers on a network.

Question 19

Explain an intranet

Answer 19

an intranet is an internal company network built using Internet and World Wide Web standards and products