Mod1-Lesson4

Question 1

A massive public network of networks, a labyrinth of hardwired and wireless connections between disparate drives on countless devices scattered around the world.

Answer 1

Internet

Question 2

The Internet as we know it had its genesis in the US Department of Defense as a concept explored by the?

Answer 2

Advanced Research Projects Agency (ARPA) 1960s

Question 3

A standardized system for accessing and navigating the Internet. It isn’t the only system but it is by far the most common

Answer 3

World Wide Web

Question 4

The protocol that standardizes the use of HTML on the Web, allowing users to access and share information.

Answer 4

HTTP (Hypertext Transfer Protocol)

Question 5

The language used for creating web pages, allowing information to be structured and formatted.

Answer 5

HTML (Hypertext Markup Language)

Question 6

Required to access the World Wide Web, interpreting HTML and displaying web pages.

Answer 6

Web Browser

Question 7

A fundamental feature of HTML that allows users to navigate from one web page to another.

Answer 7

Hyperlink

Question 8

Refers to the transmission of digital data between two or more computers, essential for data communication and networking.

Answer 8

Data Communication

Question 9

A set of computers connected together for sharing resources, including access to the Internet, printers, and file servers.

Answer 9

Computer Network

Question 10

The physical connection between computers in a network can be established using cable media or wireless media like Wi-Fi.

Answer 10

Connection Methods in a Computer Network

Question 11

The Internet can be considered the best-known computer network, facilitating global communication and data exchange.

Answer 11

The Internet as a Computer Network

Question 12

The absence of links in mobile apps indicates that much online content is accessed through means other than the Web.

Answer 12

Difference between Web and Mobile Apps

Question 13

Provide links to web pages, allowing users to access information connected by hyperlinks.

Answer 13

Search Engines

Question 14

Difference between Internet and World Wide Web

Answer 14

The Internet is the infrastructure, while the Web is a system for accessing it.

Question 15

refers to the transmission of digital data between two or more computers, and a computer network or data network is a telecommunications network that allows computers to exchange data.

Answer 15

Data communications

Question 16

Is a small segment of a larger message. Data sent over computer networks, such as the Internet, is divided into _____

Answer 16

Packet

Question 17

The idea of ARPANET, one of the earliest computer networks, was proposed by? In his paper titled “Information Flow in Large Communication Nets.

Answer 17

Leonard Kleinrock in 1961

Question 18

The term “packet” was coined by, to describe data sent between computers over a network.

Answer 18

Donald Davies in 1965

Question 19

Development of ARPANET started in? And the first two nodes, UCLA and SRI (Stanford Reearch Institute), were connected, officially starting ARPANET in?

Answer 19

1966,1969

Question 20

A document to define and provide information about computer communications network protocols and procedures

Answer 20

The first RFC (April 1969)

Question 21

The first network switch and IMP (Interface Message Processor) were sent to UCLA on? It is used to send the first data transmission on ARPANET.

Answer 21

August 29, 1969

Question 22

The Internet was officially born, with the first data transmission sent between?

Answer 22

UCLA and SRI on October 29, 1969, at 10:30 p.m.

Question 23

A file sharing protocol for use with NetWare.

Answer 23

NCP (NetWare Core Protocol) 1970, by Steve Crocker and a team at UCLA

Question 24

Sent the first email

Answer 24

Ray Tomlinson (1971)

Question 25

Ethernet is developed by?

Answer 25

Robert Metcalfe in 1973

Question 26

The first international network connection, called SATNET, is deployed in?

Answer 26

1973 by ARPA.

Question 27

Developed the first true IP router, originally called a gateway.

Answer 27

Ginny Strazisar (1976)

Question 28

Invented the TCP/IP protocol for networks and developed it, with help from Vint Cerf

Answer 28

Bob Kahn (1978)

Question 29

Created as a network between IBM mainframe systems in the United States.

Answer 29

BITNET (1981)

Question 30

Developed by the U.S. National Science Foundation.

Answer 30

CSNET (Computer Science Network) (1981)

Question 31

Implemented the first DNS.

Answer 31

Paul Mockapetris and Jon Postel (1983)

Question 32

A computer network formed around a person. It generally consists of a computer, mobile device, or personal digital assistant.

Answer 32

PAN (Personal Area Network)

Question 33

- It is mostly a personal devices network equipped within a limited area. - Allows you to handle the interconnection of IT devices around a single user. - PAN includes mobile devices, tablets, and laptops. - It can be wirelessly connected to the Internet, known as **WPAN**. - Appliances used for PAN: cordless mice, keyboards, and Bluetooth systems.

Answer 33

Characteristics of PAN:

Question 34

- PAN networks are relatively secure and safe. - It offers a short-range solution (up to ten meters). - Strictly restricted to a small area.

Answer 34

Advantages of PAN

Question 35

- It may establish a bad connection to other networks at the same radio bands. - Distance limits can restrict its use.

Answer 35

Disadvantages of PAN

Question 36

A group of computers and peripheral devices connected in a limited area such as a school, laboratory, home, or office building. It is widely used for sharing resources like files, printers, games, and other applications

Answer 36

LAN (Local Area Network)

Question 37

- It is a private network; an outside regulatory body never controls it. - LAN operates at a relatively higher speed compared to other WAN systems. - Various kinds of media access control methods, such as token ring and Ethernet, can be used

Answer 37

Characteristics of LAN

Question 38

- Computer resources like hard disks, DVD-ROMs, and printers can be shared, significantly reducing hardware purchase costs. - The same software can be used over the network instead of purchasing a licensed version for each client. - Data of all network users can be stored on a single hard disk of the server computer. - Easily transfer data and messages over networked computers. - Centralized data management enhances security. - Local Area Network offers the facility to share a single internet

Answer 38

Advantages of LAN:

Question 39

- Although LAN saves costs due to shared resources, the initial installation cost is quite high. - The LAN administrator can check personal data files of every LAN user, compromising privacy. - Unauthorized users can access critical data if the LAN admin fails to secure the centralized data repository. - Local Area Network requires constant administration due to software setup and hardware failures.

Answer 39

Disadvantages of LAN

Question 40

A computer network that is spread across a large geographical area. It is mostly limited to an enterprise or an organization.

Answer 40

WAN (Wide Area Network)

Question 41

- Software files are shared among all users; therefore, all can access the latest files. - Organizations can form their global integrated network using WAN.

Answer 41

Characteristics of WAN

Question 42

WAN covers a larger geographical area, allowing business offices situated at longer distances to communicate easily. - Devices like mobile phones, laptops, tablets, and gaming consoles can be connected. - WLAN connections work using radio transmitters and receivers built into client devices.

Answer 42

Advantages of WAN

Question 43

The initial setup cost of investment is very high. - It is difficult to maintain the WAN network, requiring skilled technicians and network administrators. - There are more errors and issues because of the wide coverage and the use of different technologies. - Resolving issues can take more time due to the involvement of multiple wired and wireless technologies. - WAN offers lower security compared to other types of networks.

Answer 43

Disadvantages of WAN

Question 44

Consists of a computer network across an entire city, college campus, or a small region. This type of network is larger than a LAN, which is mostly limited to a single building or site. Depending upon the type of configuration, this network can cover areas from several miles to tens of miles.

Answer 44

MAN (Metropolitan Area Networ)

Question 45

- It mostly covers towns and cities within a maximum range of 50 km. - The most common medium is optical fibers and cables. - Data rates are adequate for distributed computing applications.

Answer 45

Characteristics of MAN

Question 46

- It offers fast communication using high-speed carriers like fiber optic cables. - It provides excellent support for extensive networks and greater access to WANs. - The dual bus in a MAN network allows for data transmission in both directions concurrently. - A MAN network can include some areas of a city or an entire city.

Answer 46

Advantages of MAN

Question 47

More cable is needed to establish MAN connections from one place to another. - It is tough to secure a MAN network from hackers.

Answer 47

Disadvantages of MAN

Question 48

Helps link single or multiple devices using wireless communication within a limited area, such as a home, school, or office building.

Answer 48

WLAN (Wireless Local Area Network)

Question 49

A type of network that allows consolidated, block-level data storage. It is mainly used to connect storage devices like disk arrays, optical jukeboxes, and tape libraries.

Answer 49

SAN (Storage Area Network)

Question 50

Used for local networks, offering high-speed connections in server-to-server and processor-to-processor applications.

Answer 50

System Area Network

Question 51

A networking technology that integrates into structured cabling, resolving issues of supporting Ethernet protocols and network applications.

Answer 51

POLAN (Passive Optical Local Area Network)

Question 52

Built using two or more interconnected computers to form a local area network (LAN) within the home. This type of network helps computer owners to interconnect multiple computers, allowing the sharing of files, programs, printers, and other peripherals.

Answer 52

HAN (Home Area Network)

Question 53

Are built and owned by businesses that want to securely connect numerous locations to share various computer resources

Answer 53

Enterprise Private Network (EPN)

Question 54

Consists of interconnected LANs within a specific geographical area, such as a university campus linking various academic departments.

Answer 54

CAN (Campus Area Network)

Question 55

A private network that uses a public network to connect remote sites or users together.

Answer 55

VPN (Virtual Private Network)

Question 56

A network type in which every computer and network device is connected to a single cable.

Answer 56

Bus Topology

Question 57

Each computer is connected to another computer, forming a ring. Each device has exactly two neighbors.

Answer 57

Ring Topology

Question 58

All computers are connected to a single hub through a cable. This hub is the central node, with all other nodes connected to it.

Answer 58

Star Topology

Question 59

It consists of a point-to-point connection to other nodes or devices, where all network nodes are interconnected

Answer 59

Mesh Topology

Question 60

Nodes have routing logic to direct data to the destination using the shortest distance or to avoid broken links

Answer 60

Routing

Question 61

Data is transmitted to all network nodes without requiring routing logic, making the network robust.

Answer 61

Flooding

Question 62

Tree Topology

Answer 62

It has a root node, with all other nodes connected to it, forming a hierarchy. It should have at least three levels in the hierarchy.

Question 63

It is a mixture of two or more different types of topologies. For example, if one department uses ring topology and another uses star topology.

Answer 63

Hybrid Topology

Question 64

Are the transmission media used to transfer data from one device to another

Answer 64

Network Cables

Question 65

Is a connecting device that transfers data packets between different computer networks. Typically, they connect a PC or an organization's LAN to a broadband internet connection.

Answer 65

Routers

Question 66

Receives a signal and regenerates it before re-transmitting, allowing it to travel longer distances.

Answer 66

Repeater

Question 67

Is a multiport repeater with several input/output ports, where input at any port is available at every other port.

Answer 67

Hub

Question 68

Receives data from a port, uses packet switching to determine the destination device, and forwards the data to the specific destination, rather than broadcasting it like a hub.

Answer 68

Switch

Question 69

Connects two separate Ethernet network segments and forwards packets from the source network to the destination network.

Answer 69

Bridges

Question 70

Connects entirely different networks that operate on different protocols. It serves as the entry and exit point of a network and controls access to other networks.

Answer 70

Gateways

Question 71

Is a component of the computer that connects it to a network. Network cards are of two types: internal network cards and external network cards.

Answer 71

Network Interface Cards (NIC)

Question 72

Is a type of twisted pair cable used in local area networks to connect a computer to a network hub, such as a router.

Answer 72

Straight Through Cable

Question 73

Is a type of Ethernet cable used to connect computing devices directly.

Answer 73

Crossover Cable

Question 74

An advanced type of network cable that offers significantly improved performance in terms of bandwidth and data carrying compared to traditional metal conductor versions.

Answer 74

Fiber Optic Cable

Question 75

Describes the maximum data transfer rate of a network or Internet connection. It measures how much data can be sent over a specific connection in a given amount of time

Answer 75

Bandwidth

Question 76

is a set of rules that governs the communications between computers on a network. These rules include guidelines that regulate the following characteristics of a network: access method, allowed physical topologies, types of cabling, and speed of data transfer.

Answer 76

Network Protocols

Question 77

Software installed on your PC to access the Web

Answer 77

Web Browsers

Question 78

A product from Microsoft and is one of the most commonly used browsers worldwide. It was introduced in 1995 along with Windows 95 and surpassed Netscape in popularity in 1998.

Answer 78

Internet Explorer

Question 79

Known to be one of the most popular web browsers, with a global share of more than 50%. Was first released on September 2, 2008, for Microsoft Windows.

Answer 79

Google Chrome

Question 80

Was released in 2004. It has grown to become the second most popular browser on the Internet.

Answer 80

Mozilla Firefox

Question 81

A web browser developed by Apple Inc. and included in Mac OS X. It was first released as a public beta in January 2003 and has very good support for the latest technologies like XHTML and CSS2.

Answer 81

Safari

Question 82

Smaller and faster than most other browsers yet is fully featured. It is user-friendly with a keyboard interface, multiple windows, zoom functions, and more.

Answer 82

Opera

Question 83

Is an open-source web browser compliant with HTML 4.01, supporting Java applets, JavaScript, CSS1, CSS2.1, as well as Netscape plugins. It also functions as a file manager, supporting basic file management on local UNIX file systems.

Answer 83

Konqueror

Question 84

Fully featured World Wide Web browser for users on Unix, VMS, and other platforms running cursor-addressable, character-cell terminals or emulators.

Answer 84

Lynx

Question 85

The Top 10 Most Popular Search Engines in The World

Answer 85

- Google - DuckDuckGo - Microsoft Bing - Ask.com - Yahoo - Ecosia - Baidu - AOL.com - Yandex - Internet Archive