IT support Flashcards
(37 cards)
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.
