IT support Flashcards
CPU is responsible for…?
All the work. It performs every single action a computer does and executes programs.
How are programs stored?
Programs are stored as sequences of bits. Bits are another name for binary digits (sequences of 1s and 0s).
How do optic-fabric cable transmit data?
Fiber-optic cables transmit data via fast-traveling pulses of light.
Is CPU fast?
Yes. It can handle milions of instructions per second.
Is Hub or Switch more efficient?
Switch. It can deliver data to one specific device in network (hub delivers to all).
What can CPU do?
Only logical and mathematical operations and executing instructions that it is given.
What does I/O means?
Input and output.
What does router do?
It sends information from the internet to personal devices like computers, phones, and tablets. These internet-connected devices in your home make up your Local Area Network (LAN).
What is CPU?
CPU is short for Central Processing Unit. It is also known as a processor or microporcessor.
What is DNS?
The Domain Name System (DNS) is the phonebook of the Internet.
What is a MAC address?
A unique identifier assigned to a network interface controller for use as a network address in communications within a network segment.
What is a bit?
A bit (binary digit) is the smallest unit of data that a computer can process and store. A bit is always in one of two physical states, similar to an on/off light switch. The state is represented by a single binary value, usually a 0 or 1.
What is a server?
A server is a computer or system that provides resources, data, services, or programs to other computers, known as clients, over a network.
What is an IP adress?
An IP address is a unique address that identifies a device on the internet or a local network.
What is data protocol?
A data protocol is a set of rules that govern how data is exchanged between devices.
What is inside of CPU?
Thousands of microscopic transistors.
What is router?
A router is a device that provides Wi-Fi and is typically connected to a modem.
What is transistor?
Tiny switch that controls the flow of electricity.
What is “binary”?
Binary is a base two numerical system. It’s comprised of only two numbers: 0 and 1.
Which two types of storage computer has?
Permanent and long-term storage.
Who/what is client?
The one who requests data.
Which 5 layers are in 5 Layer Model?
Physical, Data Link, Network, Transport, Application
For what is the first layer (The Physical Layer) responsible?
For transmitting a single bit – 0 or 1 – over the network.
For what is the second layer (Data Link Layer) responsible?
The second layer is responsible for transmitting data between two hosts that are directly linked, despite possible errors.
For what is the third layer (Network Layer) responsible?
The third layer is responsible for routing – that is, determining the path where the data will “travel”.
For what is the fourth layer (Transportation Layer) responsible?
The fourth layer is an end-to-end layer. That is, it is responsible for communication from the source, all the way to the ultimate destination.
For what is the fourth layer (Aplication Layer) responsible?
This layer provides the service to the user’s application – web service, Voice over IP (VoIP), network games, streaming, and so on.
What “www” means?
World Wide Web
What “http” means?
Hypertext Transfer Protocol
What is TCP/IP?
TCP/IP stands for Transmission Control Protocol/Internet Protocol and is a suite of communication protocols used to interconnect network devices on the internet. TCP/IP is also used as a communications protocol in a private computer network (an intranet or extranet).
What is TCP?
The Transmission Control Protocol (TCP) is one of the main protocols of the Internet protocol suite. TCP provides reliable, ordered, and error-checked delivery of a stream of octets (bytes) between applications running on hosts communicating via an IP network.
Is standard website with javascript static or dynamic?
Static.
What is static website?
In Static Websites, Web pages are returned by the server which are prebuilt source code files built using simple languages such as HTML, CSS, or JavaScript. There is no processing of content on the server (according to the user) in Static Websites.
What is dynamic website?
In Dynamic Websites, Web pages are returned by the server which are processed during runtime means they are not prebuilt web pages but they are built during runtime according to the user’s demand with the help of server-side scripting languages such as PHP, Node.js, ASP.NET and many more supported by the server.
Which one is slower: static or dynamic website?
Dynamic.
Which one is more expensive: static or dynamic website?
Dynamic.
Is Facebook (or Instagram, Twitter etc.) dynamic or static website?
Dynamic.
