Networking MCQ Quiz - Objective Question with Answer for Networking - Download Free PDF

The correct answer is "C- band transmission".

Key Points

• C-band transmission is a portion of the electromagnetic spectrum in the microwave range of frequencies ranging from 4.0 to 8.0 gigahertz (GHz).
• In the US, the Federal Communications Commission C band proceeding and auction, designated 3.7–4.2 GHz as the C band. It is used for many satellite communications, including TV and radio broadcasting to nearly 120 million American homes, as well as other critical data transmission services.
• It adjoins CBRS, a band from 3.55 to 3.7GHz that's currently being deployed for 4G. The C-band is also commonly referred to as “Mid-band” in other parts of the world.

Additional Information

• K-band transmission is a type of radio frequency transmission that occurs in the microwave range of frequencies from 18 to 27 GHz. It is used for a variety of applications, including military data transmission, broadband satellite networks for multimedia applications, and scientific missions. K-band frequencies are absorbed by water vapour in the atmosphere, making them unsuitable for long-range transmissions. However, they offer good short-range, high throughput, and high resolution.
• S-band transmission is a type of radio frequency used for satellite communications and other wireless applications. It is located in the 2.3-2.5 GHz range and is widely used for low-power unlicensed microwave devices such as cordless phones, wireless headphones (Bluetooth), wireless networking (WiFi), garage door openers, keyless vehicle locks, baby monitors, medical diathermy machines, and microwave ovens.

The correct answer is First.

Key Points

• It is the first generation of computers which uses mechanical language for programming.
• The instructions were given through the front panel switches of these computers, directly to the CPU.
• The program is written as binary instructions, consisting of zeros and ones.
• One of the main disadvantages of programming in a low-level language is that when an error occurs, the code is not as easy to fix.

Additional Information

• Machine language, or machine code, is a low-level language comprised of binary digits (ones and zeros). High-level languages, such as Swift and C++ must be compiled into machine language before the code is run on a computer.
• Since computers are digital devices, they only recognize binary data. Every program, video, image, and character of text is represented in binary. This binary data, or machine code, is processed as input by the CPU. The resulting output is sent to the operating system or an application, which displays the data visually. For example, the ASCII value for the letter "A" is 01000001 in machine code, but this data is displayed as "A" on the screen. An image may have thousands or even millions of binary values that determine the color of each pixel.
• While machine code is comprised of 1s and 0s, different processor architectures use different machine code. For example, a PowerPC processor, which has a RISC architecture, requires different code than an Intel x86 processor, which has a CISC architecture. A compiler must compile high-level source code for the correct processor architecture in order for a program to run correctly.

The correct option is (2)

WAN

Key Points

• A telecommunications network that covers a vast geographic region is known as a wide area network (WAN). Leased telecom lines are frequently used to set up wide area networks.
• A LAN that links to other LANs via phone lines and radio waves is an example of a WAN network infrastructure.
• Multiple smaller networks, like LANs or MANs, can be found within a WAN. The most well-known public WAN is the Internet.

Additional InformationLAN:- A group of devices connected to one another in a single physical location, such as a building, office, or home, is known as a local area network (LAN).

Bluetooth:- UHF radio waves are used by devices connected to a Bluetooth network to communicate with one another.

Wi-fi:- A feature that enables computers, smartphones, or other devices to access the internet or wirelessly communicate with one another in a specific location.

The correct answer is Generation.

Key Points

•  In telecommunication, 'G' in 1G, 2G, 3G, and 4G stands for Generation.
• 1G, 2G, 3G, 4G, and 5G represent the five generations of mobile networks where 'G' stands for 'Generation' and the numbers 1, 2, 3, 4, and 5 represent the generation number.
• Since the early 1980s, one sees a new generation of mobile networks almost every ten years.

Additional Information

• A major jump in technology was when the wireless networks went from analog to digital.
• The first-generation (1G) – Systems are voice-oriented analog cellular and cordless telephones.
• The second-generation (2G) – Delivered digital signal and offered up to 250Kbps speed. Supports voice, text, and data services.
• The third-generation (3G) – At least 200Kbps up to 3Mbps speed.
• The fourth-generation (4G) – 4G delivers up to 100Mbps for mobile access, and up to 1Gbps for wireless access.

The correct answer is Generation.

• The letter 'G' has been used for Generation in 4G technology in mobile communication.

Key Points

• Meaning of 'G' in mobile signal
  • The G in 2G, 3G and 4G stands for Generation, and they refer to the 2nd, 3rd and 4th generation of wireless technology. 
  • The higher the generation the better, fast, and powerful will be the network.
  • Letter G stands for GPRS (General Packet Radio Service).
  • It indicates the slowest speed of internet data transfer on our mobile phone.

​Additional Information

• Meaning of 'E' in mobile signal
  • Letter E stands for EDGE (Enhanced Data Rates for GSM Evolution).
  • It is also called Enhanced GPRS.
  • This technology lies somewhere in between 2G and 3G technology.
  • So, some people refer to it as 2.5G.

The correct answer is option 1 i.e Intranet.

Key Points

• A computer in a network cannot be accessed outside of the local network unless given permission is called the intranet.
  • Intranet is established mainly with the technologies for local area networks and wide area networks.
  • Larger business organizations allow users within their intranet to access public internet through firewall servers.
  • The intranet is functionally useful only for a selected group of people.
  • Comparing to the Internet, the intranet is a closed network.
  • Microsoft SharePoint, Huddle, Igloo, and Jostle are common examples of the Intranet service.
• Additional Information 
• The Internet is a worldwide network of computers.
  • ARPANET is considered as the ancient form of the internet.
  • Vinton Gray Cerf is recognized as "the father of the Internet",

The Correct Answer is Metropolitan Area Network.

• A metropolitan area network (MAN) is a computer network that interconnects users with computer resources in a geographic region of the size of a metropolitan area.

Additional Information

A computer network is a group of computers linked to each other that enables the computer to communicate with another computer and share its resources, data, and applications.

On the basis of the size of the network it is mainly of four types:

Computer Network Types

• LAN(Local Area Network): Local Area Network is a group of computers connected to each other in a small area such as a building, or office.
• PAN(Personal Area Network): It is a network arranged within an individual person, typically within a range of 10 meters.
• MAN(Metropolitan Area Network): A metropolitan area network is a network that covers a larger geographic area by interconnecting a different LAN to form a larger network.
• WAN(Wide Area Network): A Wide Area Network is a network that extends over a large geographical area such as states or countries.

The correct answer is the hub.

Key Points

• An Ethernet hub, active hub, network hub, repeater hub, multiport repeater, or simply hub is a network hardware device for connecting multiple Ethernet devices together and making them act as a single network segment.
• It has multiple input/output (I/O) ports, in which a signal introduced at the input of any port appears at the output of every port except the original incoming.

Additional Information

• Tim Berners-Lee, a British scientist, invented the World Wide Web (WWW) in 1989 while working at CERN.
• The first web page address was http://info.cern.ch/hypertext/WWW/TheProject.html.
• ARPANET adopted TCP/IP on January 1, 1983.
• NCSA Mosaic ran on Windows computers was the first browser to surf the internet.

The correct answer is Dynamic Host Configuration Protocol.

Key Points

• DHCP is the acronym of Dynamic Host Configuration Protocol.
• A Dynamic Host Configuration Protocol is a network server that automatically provides and assigns IP addresses, default gateways and other network parameters to client devices.
• It will help to prevent duplication of addresses and also help the administrator keep good records.
• DHCP is designed to improve the efficiency of allocating IP addresses.
• DHCP services exist for networks running both Internet Protocol version 4 (IPv4) and  Internet Protocol version 6 (IPv6).
• The IPv6 version of the DHCP protocol is commonly called DHCPv6.

Additional Information

• Other common network protocols examples:
  • Address Resolution Protocol (ARP)
  • File Transfer Protocol(FTP)
  • HyperText Transfer Protocol(HTTP)
  • Post Office Protocol (POP3)
  • Simple Mail Transfer Protocol (SMTP)
  • Secure Shell Protocol (SSH)

The correct answer is Simplex.

Additional Information

• Communication between a computer and a keyboard involves simplex transmission because here data flows in a single direction.
  • Simplex transmission is a type of transmission mode. In this type of transmission mode, data can be sent only through one direction i.e. communication is unidirectional. We cannot send a message back to the sender.
  • Examples of simplex Mode is the loudspeaker, television broadcasting, television and remote, keyboard and monitor etc.
• In half-duplex mode, each station can both transmit and receive, but not at the same time, that is, when one device is sending, the other can only receive, and vice versa. Example of Half-duplex systems: Walkie-talkies and CB (citizens band) radios.
• In full-duplex mode, both stations can transmit and receive simultaneously. 
  • Telephone is an example of a full-duplex system.

The correct answer is Router.

Key Points

• A router is a networking device that forwards data packets between computer networks.
• Routers perform the traffic directing functions on the Internet. Data sent through the internet, such as a web page or email, is in the form of data packets.
• A packet is typically forwarded from one router to another router through the networks that constitute an internet work until it reaches its destination node.
• A router is connected to two or more data lines from different IP networks.
• When a data packet comes in on one of the lines, the router reads the network address information in the packet header to determine the ultimate destination.
• Then, using information in its routing table or routing policy, it directs the packet to the next network on its journey.
• The most familiar type of IP routers are home and small office routers that simply forward IP packets between the home computers and the Internet.
• More sophisticated routers, such as enterprise routers, connect large business or ISP networks up to the powerful core routers that forward data at high speed along the optical fiber lines of the Internet backbone.

The correct answer is Multi-access bus.

Key Points

• In a multi-access bus network, all nodes (computers, printers, etc.) are connected to a single communication line (the bus).
• This network type is called 'multi-access' because all nodes share and have access to the same communication line.
• Information sent from one node travels along the bus to all other nodes on the network.
• It is simple and less expensive to install and expand.
• However, as the number of nodes increases, the efficiency of the network can decrease because of data collisions.

Additional Information

• Ring Topology-
  • In Ring Topology each node connects to two other nodes and forms a single continuous pathway for signals through each node.
  • It connects the workstations in a closed loop.
  • Data is transmitted around the ring in one direction only.
  • A break in the ring causes the entire network to fail.
  • There is no signal loss in the Ring Topology.

​

• Bus Topology-
  • In Bus Topology nodes are connected to a common half-duplex link called a bus or backbone.
  • Each workstation is connected to the next workstation in a point-to-point fashion.
  • The common implementation of this topology is Ethernet.
  • This topology is used only in comparatively small networks.

• Star Topology- 
  • In this network, topology nodes are connected to a central hub.
  • Nodes communicate across the network by passing data through the hub.
  • Failure in one of the terminals does not affect any other terminal.
  • This network topology is used to connect terminals to a large time-sharing host computer.

• Mesh Topology- 
  • In this network, topology devices are connected with many redundant interconnections between network nodes.
  • Failure in one of the computers does not cause the network to break down.
  • This topology is used in the critical connection of host computers.

The correct answer is Wi-Fi.

Key Points

• WiFi:
  • ​It is suggested that wifi stands for Wireless Fidelity.
  • It is a wireless communication technology which enables computers and other devices to communicate through a wireless signal.
  • Wifi technology has coverage areas of up to 300 feet (approx.. 100 meters).
  • This means it can be used for larger distance compared to Bluetooth technology. 

Additional Information

• Electronic gadgets enable people to communicate with each other irrespective of their geographic location and distance.
• All technologies can be broadly classified into – wired and Wireless.
• Wired technologies use cables whereas wireless technologies use radio frequency to enable one or more devices to communicate without any physical connections.
• Bluetooth:
  • Bluetooth technology was created by a telecom company called Ericsson in 1994.
  • It is a wireless medium for sharing information built into electronic devices like mobile phones, Personal Digital Assistants (PDAs) etc.
  • There is no cable or modem or driver to be installed.
  • It can work in a concise range for example only within the room.
  • It a short-range wireless convergent technology.
  • It is a low-power radio technology covering a small range of distances up to 10 metres or 30 feet approx.
  • This technology has been adopted to many products such as earphones, in-car systems, printer, keyboard, and mouse.
• Infrared:
  • ​It is another wireless technology that uses infrared radiation for wireless transmission between computer devices as well as many handheld remotes for TVs and video and stereo equipment.
  • Infrared adapters are installed on many laptops and smartphones.
• Modem:
  • ​Modems can be wired or wireless.
  • It converts the digital signal from the computer into an analogue signal that can travel through the telephone line.
  • On the other end, this analogue signal is again converted back to digital form by the modem at the destination end.

The correct answer is Client.

Key Points

• A client is a computer that connects to and uses the resources of a remote computer, or server.
• Many corporate networks comprise a client computer for each employee, each of which connects to the corporate server.
• The server provides resources like files, information, Internet and Intranet access, and external processing power.
• In the case of processing, any work done on the server is referred to as "server-side" work. Any work done on the local client is similarly called "client-side."

Additional Information