Fundamentals Of Computer Networking

History Of Computer Networking

In 1969, the Advanced Research Projects Agency Network developed the first linked computer network, signaling the beginning of modern computer and device networking. A computer network is a system that connects many autonomous computers in order for them to share data and resources. Computers and other connected gadgets allow users to communicate more easily. The major classification of networks is based on the medium used and the geographic region covered. The medium used comprises wired and wireless networks, and the region covered includes LANs (Local Area Networks), PANs (Personal Area Networks), MANs (Metropolitan Area Networks), and WANs (Wide Area Networks) (Wild Area Network).

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Computer Networking

There are several advantages and disadvantages to computer networking, which we will cover in detail later. We\’ll also discuss what professions are available in computer networking. A network technician is a person who works in a computer network. They are in charge of an organization\’s communication infrastructure, also known as the communication network system.

Defining Computer Networking

The computer networking system is a collection of computers that are linked together. A network connection can be built via cable, wireless media, and other means. Hardware and software are used in networking to connect computers and tools. A computer networking system\’s primary function is to allocate resources among multiple computers. Aside from that, it has a number of additional goals, which include:

  • High Reliability – All files might be copied on two or more machines if there are other sources of supply. In the event that one of them is unavailable due to hardware failure, the other copies may be used.
  • Inter-process Communication — Through the network, network users that are geographically separated can talk in an interactive session. The network must be able to offer almost error-free communications to make this possible.
  • Easy Access– Files may be accessible from any computer on the network, giving you a lot of flexibility. It\’s possible to start the job on one machine and finish it on another. Other objectives include processing function distribution, centralized administration and network resource allocation, compatibility of disparate equipment and software, good network performance, scalability, cost savings, distant information access, and person-to-person communication.

Introducing Types Of Computer Networking

We categorise computer networking based on the area covered, the medium used, the types of communication employed, and the architecture type.

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Computer Networking

Classification On the Basis Of Medium Used

Wired network: As we all know, \”wired\” refers to any physical media made up of cables. Copper wire, twisted pair cable, and fiber optic cable are all possibilities. In a wired connection, wires link devices to the internet or another network, such as laptops or desktop PCs.

Wireless Network: \”Wireless\” refers to communication that uses electromagnetic waves (EM Waves) or infrared waves rather than cables. Antennas and sensors will be included in all wireless devices. Cell phones, TV remotes, wireless sensors, satellite dish receivers, and laptops with WLAN cards are examples of wireless devices. For data and voice transmission, the wireless network uses radiofrequency waves rather than cables.

Classification On The Basis Of Area Covered

1. LAN(Local Area Network)- A local area network (LAN) is a group of computers connected in a restricted space, including a building or an office. A local area network (LAN) connects two or maybe more computers employing a communication means such as a twisted pair or coaxial cable. Because it is made up of low-cost components like hubs, network adapters, and ethernet cables, it is less expensive. Data is exchanged at a breakneck speed in a Local Area Network. In addition, a Local Area Network provides a higher level of security.

2. PAN(Personal Area Network)- A Personal Area Network (PAN) is a network that is set up within a single person and normally features a range of 10 meters. The term \”Personal Area Network\” refers to a network that can be used to link personal computing devices. Thomas Zimmerman, a research scientist, initially proposed the Personal Area Network. The Personal Area Network (PAN) spans a 30-foot radius. Laptops, media players, mobile phones, and play stations are examples of personal computing devices which are utilized to form a personal area network.

3. MAN(Metropolitan Area Network)- A metropolitan area network (MAN) is a network that associates many LANs to create a much bigger and larger network that spans a broader geographic area. MAN is used by organizations owned by the government to engage with private and individual businesses. MAN adjoins several LANs via a telephone exchange line. The range of this is bigger than the Local Area Network (LAN).

4. WAN(Wide Area Network)- A wide area network (WAN) spreads over a vast geographic area, including many states or countries. A Wide Area Network (WAN) is a way more broad network than a local area network (LAN). WAN joins several locations over a very broad geographical region via telephone line, satellite connectivity, or optic fiber cable. Internet is one of the finest examples of the world\’s largest WANs. In the fields of government, business, and education, a good network area is usually employed.

Advantages and Disadvantages of Computer Networking

Computer networking systems have numerous pros and cons.

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Advantages and Disadvantages of Computer Networking

Advantages-:

1. It expands storage capacity – Because you will be sharing data, records, and assets with others, you must ensure that all information and content is properly stored in the system. You may execute the majority of this with ease thanks to our system administration innovation, and you\’ll have all the room you need for capacity.

2. Security via Authorization — The method also ensures the security and protection of information. No one else can breach the protection or security of the information since only system clients are allowed access to certain data or applications.

3. Reliability- It is the competence to back up data. When one PC\’s data is corrupted or inaccessible for differing reasons, another clone of reliable access to the info is accessible on another desktop for alternate uses, permitting for uninterrupted operation and handling without interruption.

4. Problem-solving Efficiency –An unambiguous problem can be addressed in less time so that a complex technique is broken down into separate procedures, each of which is managed by all of the products that contribute.

5. Resource sharing made simple- The primary goal of a network is to empower devices to access resources. Printers, scanners, and copying machines are examples of resources that several people may share. In addition, large corporations benefit from resource sharing because they may connect with their staff through a single network.

Disadvantages-:

1. A lack of productivity- Because a network has so many benefits and uses, it is almost guaranteed that it will result in the simultaneous usage of several services, which will cause distraction. Productivity concerns are widespread as a result of employees focused on a variety of jobs.

2. It lacks independence – PC organizing is a technique that is completed using computers; thus, people will rely on computers for a bigger portion of their labor rather than exerting effort to complete their tasks. Apart from that, they\’ll be bound by the primary document server, meaning that if it goes down, the infrastructure will be rendered useless, rendering clients inactive.

3. It lacks independence – PC organizing is a technique that is completed using computers. Thus, people will rely on computers for a bigger portion of their labour rather than exerting effort to complete their tasks. Apart from that, they\’ll be bound by the primary document server, meaning that if it goes down, the infrastructure will be rendered useless, rendering clients inactive.

4. It is insecure – If the primary server of a PC system fails, the entire system will be rendered useless. Furthermore, if a bridge device or a center linking server fails, the entire network will be brought to a halt. To deal with these challenges, massive systems should include a cutting-edge PC that can function as a document server, making setup and maintenance easier.

5. Network cost – The cost of implementing the system, including cabling and equipment, might be substantial.

Computer Networking Jobs: Uncovering the Myths

A computer networker sometimes referred to as a \”computer network architect\” or \”network engineer,\” is someone who works with computers. Computer networkers supervise the design, planning, implementation, and maintenance of a computer network. Once established, networkers are in charge of maintaining and controlling these computer networks. A bachelor\’s degree is normally required to work as a computer networker.

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Computer Network

Computer networkers are often needed to have a bachelor\’s degree in engineering, computer science, or a related field. Applicants with a master\’s degree, on the other hand, maybe favored by some businesses.

Computer network technicians are responsible for setting up and maintaining an organization\’s internet, intranets, and extranets. They also manage, debug, and supervise the operation of LANs and WANs. It is their obligation to keep track of and enhance the network\’s connectivity and performance.

Computer networkers can work in any industry that requires data transmission networks. As a result, they will find this environment to be exceedingly fast-paced and demanding in general. Although a computer networker\’s typical activities and responsibilities vary depending on their company, sector, and level of experience, they may anticipate accomplishing things like:

  • Creating data communication network blueprints and layouts.
  • Presenting proposals to management and explaining why pursuing them is in the best interests of the business.
  • Computer network management and control Hardware, such as routers or adaptors, and network drivers software, are being upgraded.
  • Software, hardware, and other network issues are troubleshot, diagnosed, and resolved.
  • Executing catastrophe recovery procedures.
  • Performing routine and switching equipment configuration

What does a Network Architect do?

Network technicians must check PCs/laptops, network gear and software, servers, and other devices to discover possible difficulties. They also set up, manage, troubleshoot, and inspect network wiring. Technicians should be apt to resolve difficulties quickly so that they can keep computers and network equipment up and running at all times. In addition, they must understand network administration and the network ecology.

Technicians must be up to date on new network technology so that they may provide suggestions to improve their businesses\’ network infrastructure.

Technicians must also be competent to explain technological concerns to those who do not have a technical background.
They must collaborate with their businesses\’ system administration and information technology support teams.

Qualifications Required

Because computer sciences are seldom taught in schools (for example, students are not likely to learn coding languages), most computer network administrators will need a bachelor\’s degree in computer science, information systems, engineering, or a similar discipline.

By completing a degree program in a computer-related field, aspiring computer networkers can receive hands-on expertise in areas such as network security, database architecture, and other technologies that networkers must understand and employ. Computer networkers can pursue a master\’s degree in business administration (MBA) in information systems after graduation. MBA programs typically last two years.

Salary Expected

A Network Engineer\’s yearly salary in India is $468,500 ($39,050 per month), which is $81,000 (+21 percent) more than the national average. A Network Engineer may earn up to $165,000 per year as a starting salary. The highest-paid employees might earn up to $900,000 per year.

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Computer Networking

Interview Questions For Computer Networking Job-:

  • What are the different sorts of networks?
  • Describe the many types of networks.
  • Explain what a LAN is (Local Area Network)
  • What exactly is a VPN (Virtual Private Network)?
  • What are the benefits of utilizing a virtual private network (VPN)?
  • What are the various VPN types?
  • What are the differences between nodes and links?

Computer networking, which dates back to the 1960s, has now become a significant component of our everyday lives. We can\’t picture the twenty-first century without it. It has a lot of meaning in our lives, especially after the Covid-19, because life has been completely turned to online and digital mode since then. There are specific computer networking courses available, including certificate courses. If you like, you can pursue this as a career. There are several employment opportunities in this industry, including network engineers, network architects, and so on. Furthermore, this career might help you earn a comfortable living.

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