Management Notes

Reference Notes for Management

A firewall allows the organization to:

A firewall allows the organization to:

A firewall allows the organization to:   Options:   a) enforce a security policy on data exchanged between its network and the Internet. b) check the accuracy of all transactions between its network and the Internet. c) create an enterprise system on the Internet. d) check the content of all incoming and outgoing e-mail messages. … Read more

Which of the following services only requires a single port be opened on the firewall?

Which of the following services only requires a single port be opened on the firewall?

Which of the following services only requires a single port be opened on the firewall?   Options:   a) RDP b) SSH c) HTTP d) FTP e) DNS f) DHCP g) SNMP [bg_collapse view=”button-orange” color=”#4a4949″ icon=”arrow” expand_text=”Show Answer” collapse_text=”Hide Answer” ] c) HTTP [/bg_collapse]   Answer Explanation   Remote Desktop Protocol (RDP) The full form … Read more

Functions of Operating System – Computer Software | Computer And IT Applications

Functions of Operating System

Functions of Operating System

An operating system (OS) is system software that manages computer hardware and software resources and provides common services for computer programs.

An operating system is a collection of programs that together control the operations of a computer system.

It activates and recognizes the hardware devices and provides an operating environment for other application software.

It is an interpreter which is responsible for bridging the gap between hardware and application needs.

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Types of ROM – PROM , EPROM, and EEPROM| Computer Memory

Types of ROM

Types of ROM |PROM, EPROM and EEPROM

ROM stands(Read Only Memory) is the memory from which we can only read but cannot write on it. This is a volatile memory because the information is stored permanently in such memories during the time of manufacture.

A ROM, stores such instructions that are required to start a computer. This operation is referred to as bootstrap. ROM chips are not only used by the computer but also in other electronic items like a washing machine and microwave oven. ROM is of three types which are as follows:

Types of ROM

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Difference between RAM and ROM – 6 Major Differences | Primary Memory

Difference between RAM and ROM

Difference between RAM and ROM

RAM Definition (Random Access Memory)

RAM (Random Access Memory) is the internal memory of the CPU for storing data, programs, and program results. It is read/write memory which stores data until the machine is working. RAM is a volatile memory because as soon as the machine is switched off, data is erased or lost. Random Access Memory (RAM) is a high-speed component in devices that temporarily stores all the information a device needs for the present and the future. Random-access memory allows any byte of computer memory to be accessed without affecting the preceding byte. RAM can be found in servers, PCs, tablets, smartphones, backup drives, and other devices. As of today, RAM is a type of integrated circuit chip that contains metal oxide semiconductor memory cells (MOS).RAM directly affects a system’s speed and performance.

Information in the RAM can be accessed quickly since it stores the information that the computer is currently using. In addition to loading applications, browsing the Internet, editing a spreadsheet, and switching between all these activities quickly, it enables computers to perform everyday tasks.

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