Network

Question 1

Bandwidth

Answer 1

The rate of data transfer over a fixed period of time

Question 2

Content delivery network (CDN)

Answer 2

A set of geographically distributed servers for hosting web content; improves performance and security over traditional hosting

Question 3

Cross origin resource sharing (CORS)

Answer 3

An HTTP-header based mechanism that allows a server to indicate any origins other than its own that are granted access

Question 4

Data packets

Answer 4

A small unit of information sent over a packet-switched network like the internet; contains a payload and a header with meta data (origin, destination, context, etc)

Question 5

Domain name server (DNS)

Answer 5

A map of domain names and their corresponding IP addresses

Question 6

Hypertext transfer protocol (HTTP)

Answer 6

A protocol for transmitting hypermedia documents between a client and a server over a TCP connection

Question 7

Internet protocol (IP)

Answer 7

A standard for how data packets are addressed and routed so that they can travel over networks and arrive at the correct destination

Question 8

Latency

Answer 8

The amount of time it takes for data to travel from one point to another

Question 9

Origin

Answer 9

The protocol, domain, and port of web content; [https][keiler.me][:80]

Question 10

Representational state transfer (REST)

Answer 10

A set of architectural constraints for creating web APIs:

1. Uniform interface (one endpoint per resource)
2. Client-server separation
3. Stateless (the server won’t remember a client; all requests are discrete)
4. Cacheable resources (responses indicate whether the data is cacheable to avoid redundant requests)
5. Layered system (intermediaries between client and server shouldn’t effect the request or response)

Question 11

Transmission control protocol (TCP)

Answer 11

A standard for establishing network connections and ensuring the delivery / reassembly of transmitted data

Question 12

Transport layer security (TLS)

Answer 12

A security protocol that provides encryption, authentication, and data integrity for internet communications; the S of HTTPS

Question 13

WebSocket

Answer 13

A network protocol that provides a full-duplex (simultaneous two-way) communication over a single TCP connection

Question 14

Asynchronous Javascript and XML (AJAX)

Answer 14

A set of methods for sending and retrieving data from a server asynchronously without affecting the display or behavior of the current page