OCR A-Level Computer Science Networks and web technologies overview quiz quiz

A switch

A router

A wireless access point

A modem

The application layer protocols

The internet (network) layer

The transport layer (segments)

The link (data) layer frames

It guarantees the network always runs at the fastest possible speed

It removes the need for IP addresses anywhere in the entire stack

Each layer can be changed independently without affecting the others

It automatically encrypts all of the traffic passing through every layer

must all follow one fixed, pre-agreed circuit that stays reserved for the whole of the transfer

are never reassembled and so arrive at the destination as separate fragments

are sent only over a single LAN and can never cross between networks

travel independently, possibly by different routes, and are reassembled at the destination

a service of linked pages and resources that runs over the internet

exactly the same thing as the internet, just a different name for it

the physical undersea cabling and routers that connect the countries

a type of network topology describing how computers are wired together

an IP address into a MAC address

a domain name into an IP address

HTML into a rendered page

a packet into a frame

a logical address that is reassigned every time you join a new network

the same thing as a URL that a user types into a web browser

a fixed physical address built into the network interface card

an address handed out dynamically by the DNS name servers

A worm needs a host file to attach itself to and a user action before it is able to spread

A worm cannot replicate at all and depends entirely on being copied by the user

A worm is disguised as legitimate software that the user is tricked into running

A worm self-replicates and spreads automatically across a network without a host file

To monitor and filter incoming and outgoing traffic against rules

To encrypt every piece of data leaving the network so it cannot be read

To translate human-readable domain names into the numeric IP addresses

To compress files before transmission so they take up less bandwidth

the presentation and layout

the structure and content

the client-side interactivity

ranking the page in search results

Server-side code always runs faster than the equivalent client-side code

Client-side code is unable to access the internet or send any requests

The user can view and alter client-side code, so it can be bypassed

Server-side code never needs to connect to a database to validate input

a penalty that lowers the ranking of page B in the results

completely irrelevant to how either page is ranked at all

a request to delete page A from the search engine index

a vote for page B, weighted by the importance of page A