ব্যাংক নিয়োগ প্রস্তুতি ⎯ লং কোর্স

Application programs are specialized that allows users to utilize specific applications.
These programs perform a particular function directly for the users.
Some of the common application programs include Email, web browsers, gaming software, word processors, graphics software, media player, etc.
All of these programs provide an application to the end-users, so they are known as application programs.
For example - a web browser is used to find information while gaming software is used to play games.
The requests for service and application communication systems used in an application by a programmer is known as an application program interface (API).
Source: Techcopaedia website

A program written in a low-level language can be converted to machine level language by using assembler.
Source: Techcopaedia website.

The Software used to drive microprocessor-based systems is called an Assembly language program.
An Assembly language is a low-level programming language for microprocessors and other programmable devices.
It is not just a single language, but rather a group of languages.
Source: Techcopaedia website.

Computer hardware refers to the physical parts of a computer and related devices.
Internal hardware devices include the motherboard, hard drives, and RAM.
External hardware devices include monitors, keyboards, mice, printers, and scanners.

A Segmentation fault occurs when the software tries to access the protected memory.
A Segmentation fault is a common condition causing the programs to crash. it is generally associated with a core file and is triggered by a machine trying to read or write an unauthorized position of the memory. In other words, it is a memory access violation error. A Segmentation fault is always an error in the run time.
Source: Techcopaedia website.

Debugging is a methodical process of finding and reducing the number of bugs, or defects, in a computer program or software code. Whereas, Testing is the process of finding bugs in already developed software not in software code.
Source: Google Book

Full form of POST - Power On Self Test.
When power is turned on, POST (Power-On Self-Test) is the diagnostic testing sequence that a computer's basic input/output system(or ''starting program'') runs to determine if the computer keyboard, random access memory, disk drives, and other hardware are working correctly.

Printer is an output device.
An output device is any hardware device used to send data from a computer to another device or user.
A storage device is any type of computing hardware that is used for storing, porting or extracting data files and objects.
Example: hard disc drives, floppy disc drives, cd drives
Source: Technopedia.com

Visual display unit (VDU) or video display terminal (VDT): any device used with computers to display images.
It typically consists of a computer monitor or similar display device and a keyboard, and could also include a mouse.
For example, a flat panel display and a projector are both examples of VDUs.
So, it is a peripheral device.

OSI:
The Open Systems Interconnection (OSI) Model is a conceptual and logical layout that defines network communication used by systems open to interconnection and communication with other systems.
Source: Technopedia.com

Humanware is defined in IT as hardware or software that is built around user capabilities and user needs. This often involves creating a particular visual or physical interface for a given set of users. The design and engineering of humanware starts with the user's interests and needs first, and designs the infrastructure accordingly.
Source: Technopedia.com

A process is an active entity, which exucutes a program.

Network/Computer network,
Two or more computers that are connected with one another for the purpose of communicating data electronically.
Besides physically connecting computer and communication devices,
a network system serves the important function of establishing a cohesive architecture
that allows a variety of equipment types to transfer information in a near-seamless fashion.
Source: Britannica.com

Machine code/language: the numeric codes for the operations that a particular computer can execute directly.
The codes are strings of 0s and 1s, or binary digits, which are frequently converted both from and to hexadecimal (base 16) for human viewing and modification.
Example: 10011
A programming code that is easy to remember because the codes resemble the original words,
such as MPY for multiply and ACC for accumulator
Source: Britannica.com

A firewall is a system designed to prevent unauthorized access to or from a private network.
A firewall also logs information about network traffic, which can help an administrator understand and prevent attacks.
Source: Britannica.com

Cold boot is the process of starting a computer from shutdown or a powerless state and setting it to normal working condition.
It is the system disk because the other disks may boot a PC,
but they also perform added functions beyond booting the PC.

Virtualization can be applied broadly to just about everything that you could imagine.
Memory
Networks
Storage
Hardware
Operating systems

DNS stands for Domain Name System.
A DNS is an internet service that translates a domain name into a corresponding IP address. Domain name used here is alphabetic and can be easily remembered.
For example,www.example.com is a domain name of a site.
Source: Britannica.com

According to NIST(National Institute Of Standard and Testing) stability is not the characteristics of cloud computing.
Resource scalability, On demand and pay as you go are the three characteristics of cloud computing.
Source: তথ্য ও যোগাযোগ প্রযুক্তি(একাদশ - দ্বাদশ শ্রেণী), প্রকৌশলী মজিবুর রহমান।

According to the location or deployment cloud computing are primarily 3 types
public cloud
private cloud
hybrid cloud
Source: তথ্য ও যোগাযোগ প্রযুক্তি(একাদশ - দ্বাদশ শ্রেণী) প্রকৌশলী মজিবুর রহমান।

A virtual private server (VPS) is a virtual machine sold as a service by an Internet hosting service.
The virtual dedicated server (VDS) also has a similar meaning.

HTTP (HyperText Transfer Protocol) standard application-level protocol used for exchanging files on the World Wide Web.
HTTP runs on top of the TCP/IP protocol.
Web browsers are HTTP clients that send file requests to Web servers which in turn handle the requests via an HTTP service.
Source: Britannica.com