Unit 2✔️

Question 1

Computing Device

Answer 1

a machine that can run a program, including computers, tablets, servers, routers, and smart sensors

Question 2

Computing System

Answer 2

a group of computing devices and programs working together for a common purpose

Question 3

Computing Network

Answer 3

a group of interconnected computing devices capable of sending or receiving data.

Question 4

Path:

Answer 4

the series of connections between computing devices on a network starting with a sender and ending with a receiver

Question 5

bandwidth

Answer 5

the maximum amount of data that can be sent in a fixed amount of time, usually measured in bits per second.

Question 6

protocol

Answer 6

an agreed-upon set of rules that specify the behavior of some system

Question 7

IP address

Answer 7

the unique number assigned to each device on the internet

Question 8

Internet Protocol

Answer 8

a protocol for sending data across the internet that assigns unique numbers (IP addresses) to each connected device

Question 9

Router

Answer 9

A type of computer that forwards data across a network

Question 10

redundancy

Answer 10

the inclusion of extra components so that a system can continue to work even if individual components fail, for example by having more than one path between any two connected devices in a network.

Question 11

Fault tolerance

Answer 11

can continue to function even in the event of individual component failures. This is important because elements of complex systems like a computer network fail at unexpected times, often in groups

Question 12

transmission control Protocol(tcp)

Answer 12

A protocol for sending packets that does error checking to ensure all packets are received and properly ordered. If packets are missing, it will send a request for the missing packets.

Question 13

http

Answer 13

HyperText Transfer Protocol - the protocol used for transmitting web pages over the internet

Question 14

internet

Answer 14

a computer network consisting of interconnected networks that use standardized, open (nonproprietary) communication protocols. Protocols of the internet are open and used by all devices connected to the network. The protocols of the internet were designed to scale as new devices were added.

Question 15

packet

Answer 15

A chunk of data sent over a network. Larger messages are divided up into packets that may arrive in order, out of order, or not at all

Question 16

Packet Metadata

Answer 16

Data added to packets to help route them through the network and reassemble the original message.

Question 17

Routing

Answer 17

The process of finding a path from sender to receiver.

Question 18

UDP

Answer 18

A protocol used on the internet for fast transmission of information but with minimal error checking

Question 19

World Wide Web

Answer 19

A system of linked pages, programs, and files.

Question 20

Router

Answer 20

A type of computer that forwards data across a network

Question 21

Certificate authority

Answer 21

Issue digital certificates that validate the ownership of encryption keys used in secure communications and are based on a trust model.

Question 22

Digital Divide

Answer 22

Differing access to computing devices and the Internet, based on socioeconomic, geographic, or demographic characteristics

Question 23

Internet Engineering Task Force (IETF)

Answer 23

The IETF develops and oversees standards such as hypertext transfer protocol (HTTP), Internet protocol (IP), and simple mail transfer protocol (SMTP).

Question 24

Scalability

Answer 24

The property of a system to handle a growing amount of work by adding resources to the system. The internet is scalable because it can add more routers, wired connections, DNS servers, IP addresses, etc.

Question 25

Redundant Networks

Answer 25

When a network contains redundant connections, the network can continue to function in the event of slowdowns or disconnections in specific parts of the network.