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computers
What is modem and its types
2 min
by Junaid Rehman 4 weeks ago16 hours ago
Definition of modem “A modem is a network device that converts digital signal from computer to analogue signal and converts analogue signals to digital signals” A modem is a short form of modulator and demodulator. Data transfer in analogue form in the telephone cables. There are different cables like coaxial cable and twisted pair cables....
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Types of network devices
6 min
by Junaid Rehman 4 weeks ago4 weeks ago
What is a network device “A network device is a hardware device that is used to connect computers, laptop, smartphones, printers, scanners with one another.” These network devices work on different OSI layers. For example repeater and hub work on the physical layer and switch works on the data link layer. Some network devices are:-...
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Advantages and disadvantages of mesh topology
3 min
by Junaid Rehman 4 weeks ago4 weeks ago
What is mesh topology “A type of network topology in which every node or device is connected to every other node or device in the network” Every node transfers its data but also receives data from other connected nodes. This type of topology is used in a wireless network and wide area network. All the...
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Advantages and disadvantages of hybrid topology
2 min
by Junaid Rehman 4 weeks ago4 weeks ago
Definition of hybrid topology “A type of topology which is built by connecting two or more different topologies.” For example, the arrangement of computers in an office makes ring topology. And in another office computers are attached in the form of star topology. So if you connect these two offices i.e. combining ring and star...
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What is remote procedure call (RPC) in operating system
1 min
by Junaid Rehman 4 weeks ago4 weeks ago
In a remote procedure call, the client request some processing to the server computer. The server computer is placed in a remote location. The client sends parameters with the request it sends to the server. The parameters are passed either by value, by reference, or linked in the cloud location. 5 components are involved in...
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What is Enterprise private network (EPN) with example
2 min
by Junaid Rehman 1 month ago1 month ago
A type of private network which an enterprise company uses to connect its branches is known as an enterprise private network. The initial networking was made possible in the 1970s by AT&T. Enterprise private network can be made in various ways that include:- Virtual private network (VPN) Local area network (LAN) Wide area network (WAN)...
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Difference between cooperative and preemptive multitasking
2 min
by Junaid Rehman 1 month ago1 month ago
What is multitasking Multitasking is performing multiple tasks at a time. In a computer, multiple tasks/programs run at a time. For example, chrome browser, audio player, MS word program runs at the same time. The running of multiple programs/tasks at the same time is handled by the operating system. If you have a single CPU...
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What is cloud architecture with example
2 min
by Junaid Rehman 1 month ago1 month ago
We often store our data on the hard drive of our PC, laptop or workstation. The data we store on a personal computer can be hacked, stolen or attacked by a virus. Maybe our hard drive fails to function so there is a chance of data loss. Similarly, big companies have to store their data...
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Advantages and disadvantages of passive optical local area network (POL)
2 min
by Junaid Rehman 1 month ago1 month ago
What is passive optical local area network (POL) Passive optical LAN uses fiber optics to make a network. In POL the speed of data transfer is high. You can easily video conference, audio share and browse the internet fast. There are 3 main components of POL i.e. Optical Line Terminal (OLT), Optical Splitter, Optical Network...
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What is passive optical local area network (POL) with example
2 min
by Junaid Rehman 1 month ago1 month ago
POL or passive optical local area network is an inexpensive solution to connect different devices to the internet. POL was first time introduced in 1987 by British Telecommunications. There are 3 major components of POL that are:- Optical Line Terminal (OLT) Optical Splitter Optical Network Terminal (ONT) OLT or optical line terminal is placed in...
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