Writing exam answers about the internet and the web

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Quick Questions

Shade in the A or B circle for each question.

1. Which answer would earn full marks for: 'Describe what a DNS server does'?

A It looks up the domain name and returns the matching IP address so the browser can find the web server.

B It stores all the web pages so the browser can download them quickly.

2. Which sentence uses the correct terms to explain the difference between the internet and the web?

A The internet and the World Wide Web are the same thing, so you can use either word.

B The internet is the global network of networks, and the World Wide Web is the collection of web pages that is accessed using it.

3. A question asks you to 'Describe how a web page is displayed after the browser has received the files'. Which answer gives the best step and reason?

A The browser renders the page by reading the HTML and CSS, so the content is shown with the correct structure and style.

B The browser shows the page.

4. Which answer puts the steps for locating a page in the correct order?

A The browser sends the domain name to a DNS server, gets the IP address back, then sends an HTTP request to the web server.

B The browser sends an HTTP request to the web server, then asks the DNS server for the IP address.

5. Which answer fully explains cookies with a type and a use?

A Cookies are small things that websites use.

B A persistent cookie is stored on the computer after the browser closes, so a website can remember a user's login details next time.

Match the Pairs

Draw a line connecting each item on the left to its match on the right.

Left column		Right column
1Browser sends URL to DNS -> DNS returns IP address -> browser requests page from web server		AThey are different: the internet is the network infrastructure, while the World Wide Web is the collection of web pages accessed using it. Writing that they are the same loses the mark.
2DNS finds the IP address so the browser knows which server to ask		BA persistent cookie is stored for a set time, so a website can remember a user's login details on their next visit.
3To show the difference between the internet and the web, name the internet as the network and the web as the content that runs on it.		CA DNS stores domain names and their IP addresses, not web pages. The web server stores the pages and sends them to the browser.
4To explain cookies for full marks, give a type of cookie and a use for it, and say why.		DThe internet is the global network of computers; the World Wide Web is the web pages and sites accessed over it using HTTP.
5The internet and the World Wide Web are the same thing.		EA full-mark answer gives the steps in the correct order and says what each one does, using the terms URL, DNS, IP address and web server.
6The DNS stores the web pages and sends them to the browser.		FA full-mark sentence names the term, says what it does and gives the reason (the because/so part).

Definitions

full-mark answer

Fill in the Blanks

Complete each line of code by filling in the missing parts.

1. DNS finds the __________ of the server.

The internet is the hardware network. The ___ is pages shared over it.

A ______ is a small file a site stores. It saves a login for next time.

A _______ cookie is deleted when you close the browser, e.g. to hold a shopping cart.

The browser sends an ____ request to the web server, which sends back the page.

Spot the Error

Shade in the letter of the line that contains an error.

Question 1

A 1 Browser reads the URL

B 2 DNS finds the IP address

C 3 Browser sends HTTP request

D 4 DNS server sends the page

E 5 Browser renders the HTML

Question 2

A Internet and web are the same

B The web is pages on it

C The web uses the internet

Question 3

A A cookie is a small text file

B Stored by the browser

C Session cookie: kept for years

D Use: keeps items in a cart

Question 4

A DNS looks up the domain name

B It returns the web page

C The browser contacts that IP

Question 5

A HTTPS is the secure protocol

B Data is compressed in transit

C So hackers cannot read it

Answer Key

Writing exam answers about the internet and the web

Section A: Quick Questions

A — It looks up the domain name and returns the matching IP address so the browser can find the web server.

B — The internet is the global network of networks, and the World Wide Web is the collection of web pages that is accessed using it.

A — The browser renders the page by reading the HTML and CSS, so the content is shown with the correct structure and style.

A — The browser sends the domain name to a DNS server, gets the IP address back, then sends an HTTP request to the web server.

B — A persistent cookie is stored on the computer after the browser closes, so a website can remember a user's login details next time.

Section B: Match the Pairs

Browser sends URL to DNS -> DNS returns IP address -> browser requests page from web server → A full-mark answer gives the steps in the correct order and says what each one does, using the terms URL, DNS, IP address and web server.

DNS finds the IP address so the browser knows which server to ask → A full-mark sentence names the term, says what it does and gives the reason (the because/so part).

To show the difference between the internet and the web, name the internet as the network and the web as the content that runs on it. → The internet is the global network of computers; the World Wide Web is the web pages and sites accessed over it using HTTP.

To explain cookies for full marks, give a type of cookie and a use for it, and say why. → A persistent cookie is stored for a set time, so a website can remember a user's login details on their next visit.

The internet and the World Wide Web are the same thing. → They are different: the internet is the network infrastructure, while the World Wide Web is the collection of web pages accessed using it. Writing that they are the same loses the mark.

The DNS stores the web pages and sends them to the browser. → A DNS stores domain names and their IP addresses, not web pages. The web server stores the pages and sends them to the browser.

Section C: Definitions

full-mark answer — An exam answer that uses correct terms (URL, DNS, HTTP), gives each step in order and explains why, e.g. DNS finds the IP address so the browser knows which server to ask.

Section D: Fill in the Blanks

1. DNS finds the IP address of the server.

The internet is the hardware network.
The web is pages shared over it.

A cookie is a small file a site stores.
It saves a login for next time.

A session cookie is deleted when you close
the browser, e.g. to hold a shopping cart.

The browser sends an HTTP request to the
web server, which sends back the page.

Section E: Spot the Error

D — The DNS server only gives back the IP address. It does not store or send web pages. Line 4 should say the web server sends the page.

A — The internet and the World Wide Web are not the same thing. The internet is the global network of computers. The web is the collection of web pages that runs on it. Line 1 should say the internet is the network.

C — A session cookie is deleted when the browser is closed. A cookie that is kept for years is a persistent cookie. Line 3 should say it is lost on exit.

B — DNS returns the IP address of the web server. It does not hold or return web pages. Line 2 should say it returns the IP address.

B — HTTPS protects data by encrypting it, which scrambles it so it cannot be read. Compressing only makes the data smaller and gives no security. Line 2 should say encrypted.