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What is Interprocess Communication?

Alex Onsman
Answered 1d 0h ago

Process is an instance of program or we can say that program in a running state is known as a process. When the program is loaded in the computer memory, it becomes the process which includes the codes and program activities. A single program can create many processes if it ... Read More

What is Zombie Process in Linux?

Ricky Barnes
Answered 1d 0h ago

A zombie process is a process whose execution is completed but it still has an entry in the process table. Zombie processes usually occur for child processes, as the parent process still needs to read its child’s exit status. Once this is done using the wait system call, the zombie ... Read More

What is Process Control Block (PCB)?

Alex Onsman
Answered 1d 4h ago

Process Control Block is a data structure that contains information of the process related to it. The process control block is also known as a task control block, entry of the process table, etc. It is very important for process management as the data structuring for processes is done in ... Read More

What is a process in Operating System?

Kristi Castro
Answered 1d 5h ago

A process is an active program i.e a program that is under execution. It is more than the program code as it includes the program counter, process stack, registers, program code etc. Compared to this, the program code is only the text section. A program is not a process by ... Read More

:active pseudo class in CSS

Syed Javed
Answered 1d 20h ago

Pseudo class is to show different state of an element or a css selector. Active pseudo class is to show that the element is in active state. This pseudo class is mostly being associated with link and button or any other element which can be active. For example if it ... Read More

Pulse Code Modulation

Chandu yadav
Answered 2d 1h ago

Pulse code modulation (PCM) is a technique of digitally representing analog signals. It takes samples of the amplitude of the analog signal and changes it to binary data. PCM technique is used by codecs in telephone networks to convert analog signals in local loops to digital signals in the trunks, ... Read More

Digitizing Voice Signals

Maheshwari Thakur
Answered 2d 2h ago

Analog Telephone Cores The early telephone networks had analog cores. Frequency division multiplexing (FDM) was used to transmit a number of voice signals over the single line. Twelve calls were multiplexed into a group. Five groups were multiplexed into a supergroup. Digital Telephone Cores The present telephone networks have digital ... Read More

Trunks and Multiplexing

Chandu yadav
Answered 2d 2h ago

Trunks Definition Trunks are a large-bandwidth communication channels connecting switching centres, forming the core of the telephone network. A trunk comprises of a cluster of broadcast frequencies that are suitable for long haul communication of many voice and data signals simultaneously. Features The characteristic features of a trunk are − ... Read More

Passive Optical Network

Maheshwari Thakur
Answered 2d 2h ago

Definition Passive Optical Network (PON) is a FTTH (Fiber to the Home) technology deployed in both domestic and commercial consumers. It is called a passive network since it does not require a power equipment to amplify or process signals. A PON implements point – to – multipoint architecture, where a ... Read More

Fiber To The Home

Ankith Reddy
Answered 2d 2h ago

Definition Fiber to the home (FTTH) is a technology to deploy optical fibers in the local loop of the telephone networks to the users’ home for providing high-speed data connectivity. It replaces the existing copper wires as telephone lines to the customer premises by optical fibers that allow much greater ... Read More

Digital Subscriber Lines

George John
Answered 2d 2h ago

Definition Digital Subscriber Line (DSL) is a communication technology that offers high – bandwidth digital communication over standard telephone lines formed of copper wires. Features DSL is a family of technologies under the general name of xDSL, for various x, like ADSL, HDSL, and RADSL.  Originally, it was a ... Read More

Where objects, methods and variables are stored in memory in Java?

Maheshwari Thakur
Answered 2d 4h ago

There are five main memory areas which are used to various Java elements. Following is the list of the same. Class Area - This area contains the static members of the class. Method Area - This area contains the method definition and executable code. Heap Area - This area ... Read More

volatile Keyword in Java

Chandu yadav
Answered 2d 4h ago

The volatile modifier is used to let the JVM know that a thread accessing the variable must always merge its own private copy of the variable with the master copy in the memory. Accessing a volatile variable synchronizes all the cached copied of the variables in the main memory. Volatile ... Read More

transient Keyword in Java

George John
Answered 2d 4h ago

An instance variable is marked transient to indicate the JVM to skip the particular variable when serializing the object containing it. This modifier is included in the statement that creates the variable, preceding the class or data type of the variable. Example public transient int limit = 55; ... Read More

synchronized Keyword in Java

Ankith Reddy
Answered 2d 4h ago

When we start two or more threads within a program, there may be a situation when multiple threads try to access the same resource and finally they can produce unforeseen result due to concurrency issues. For example, if multiple threads try to write within a same file then they may ... Read More

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