Http_1

Question 1

Uniform Resource Locator URL

Answer 1

Address of resource on the internet

Question 2

URL Scheme

Answer 2

http - how to access a resource (other https, ftp, mailto)

Question 3

Host

Answer 3

staples.com what is hosting the resource (could use IP address)

Question 4

Url Path

Answer 4

Specific resource

Question 5

Http default port

Answer 5

80

Question 6

Network Port definition

Answer 6

An endpoint of communication in an operating system; specific services listen to prots

Question 7

Network socket definition

Answer 7

An internal endpoint for sending or receiving data at a single node in a computer network

Question 8

Url fragment

Answer 8

Information followed by a # used on client side to navigate to a specific section of a resources (Angular route)

Question 9

Mime standards

Answer 9

Content type - label the content of an internet request – how a client interprets the http response

Question 10

Http/1.1

Answer 10

Defines the language used to communicate html requests and responses

Question 11

Http request

Answer 11

What the client sends

Question 12

Http response

Answer 12

Response from server

Question 13

Http transactions

Answer 13

1 request and response

Question 14

URL Canonicalization

Answer 14

Convert all requests to same scheme ie all requests go to www.

Question 15

Http Methods

Answer 15

Get; Post (Put, Delete, Head, Paste)

Question 16

Safe Http method

Answer 16

Get – refresh as many times as you want

Question 17

Postback

Answer 17

Data on the page is posted from the client to the server (posted to the same page the user is viewing

Question 18

Callback

Answer 18

Special type of postback - a quick roundtrip to the server to get a small amount of data - calling the server and receiving some data back

Question 19

PRG

Answer 19

Post / Redirect/ Get

Question 20

Request Message syntax

Answer 20

Method URL Version Headers Body

Question 21

Request Headers

Answer 21

Help with content negotiation Host header required Any header included must be honered

Question 22

Common Request headers

Answer 22

Referer, User-Agent, Cookie, Accept

Question 23

Response Message syntax

Answer 23

version status reason headers body

Question 24

Status code 100

Answer 24

Informational

Question 25

Status code 200

Answer 25

Successful

Question 26

Status code 300

Answer 26

Redirect

Question 27

Status code 400

Answer 27

Client error

Question 28

Status code 500

Answer 28

Server errors

Question 29

TCP

Answer 29

Transmition control protocol (Transport layer)(reliable)

Question 30

IP

Answer 30

Internet Protocol(Network layer)(creates packets)

Question 31

Data Link Layer

Answer 31

Resposible for carrying 0 and 1's from one location to another

Question 32

Parallel connections

Answer 32

Allow the client to download data on mulitiple connections

Question 33

Persistant connection

Answer 33

Socket remains open

Question 34

Proxy Server

Answer 34

Sits between the client and the server; access control device; inspect messages; log messages; load balancing

Question 35

Stateless

Answer 35

Each request is independent of another request

Question 36

_viewState

Answer 36

Used to manage state on asp .net web forms; passed in http messages

Question 37

Cookies

Answer 37

Used to track and identify users; not used for authentication; assign a unique id

Question 38

Where are cookies set

Answer 38

in the header; SET-COOKIE - browser specific

Question 39

Session Cookies

Answer 39

Good for 1 session

Question 40

Persistant cookies

Answer 40

Persisit -- must have an expiration value

Question 41

Basic Authentication

Answer 41

Not considered secure rarely used other then with https; url encoded

Question 42

Digest Authentication

Answer 42

A step up from basic authentication, request is encrypted --rarely used

Question 43

Windows authentication

Answer 43

Commonly used for intranet; cs.staples.com uses windows

Question 44

Forms Authentication

Answer 44

Most popular, not standard. A form accepts pw and login; only secure with https

Question 45

HTTPS

Answer 45

Same as SSL; Encrypts messages; default port 443;

Question 46

How does https work?

Answer 46

Adds SSL/TLS layer; encrypts; server must have a certificate; browser validates that it is communicating with correct server; all traffic is encrypted; client is not authenticated via https

Question 47

HTTPS downsides

Answer 47

Computationally expensive; can't cache in public cache; expensive to set up and maintain