WorksheetsGCSE Protocols
Total questions: 22
Worksheet time: 11mins
Only one of these could be described as a MESH network - which one?
WiFi is...
The Internet
The way mobile phones work
Microwaves
The protocol described in IEEE 802.11
WiFi frequencies are
Licensed by the BBC
Licensed by the government
Licensed by the WWW consortium
Not licensed
Frequency is measured in
Hertz
Metres per second
Volts
Seconds
The main WiFi bands are divided into...
Subnets
Minor Frequencies
Channels
IP Addresses
WiFi base stations don't all use the exact same frequency because...
They try to find the cheapest one
Radio stations sometimes interfere
The technology is just not accurate enough
They want to avoid interference from neighbouring channels
Which of these is NOT a WiFi encryption method?
WPA
WEP
WEP2
WAP
Why is WiFi encryption more of an issue than with Ethernet?
Ethernet is more modern
WiFi is more common
WiFi signals travel through the air
More people are on phones these days
Ethernet is...
A type of copper cable
A net for catching ethers
A protocol in the IEEE 802 standards
A type of network adaptor
Which one of these is NOT a valid IPv4 address?
122.122.2.2.
147.10.301.22
1.101.11.11
255.255.0.1
Every computer/phone has a unique IP address
True, if it is directly connected to the Internet
True
True, but only if it is turned on
False, only web servers have IP addresses
Which statement is true?
MAC addresses are looked up on the DNS
MAC addresses are IDs for Apple products (but not Microsoft)
MAC addresses are 100% unique
MAC addresses are usually written in 'dotted decimal'.
Which is true?
MAC addresses deal with individual 'hops' but IP addresses work across networks
MAC addresses and IP addresses are allocated by hardware manufacturers
MAC addresses are governed by the DNS but IP addresses are not
MAC addresses are hierarchical
Which one of these PROTOCOLS deals with moving packets of data across a network?
TCP/IP
HTTP
HTTPS
FTP
Which one of these protocols is used to form a request to see a webpage (or deliver a webpage)
HTTP
TCP/IP
POP3
IMAP
Which protocol would be used to transfer Internet banking commands?
HTTPS
POP3
HTTP
FTP
Which protocol would be used to upload a file to update your own website?
FTP
TCP/IP
POP3
IMAP
What would the POP3 protocol be used for?
Downloading emails to your device
Requesting a webpage
Uploading a file
A secure transaction such as Internet banking
What's the benefit of using IMAP instead of POP3?
IMAP is better when you have several devices to keep in sync
IMAP can use IPv6 IP addresses
IMAP can use HTTPS but POP3 can't
IMAP works on iPhones
SMTP...
Is used to send email and stands for Simple Message Transfer Protocol
Is an updated version of POP3
Is a secure protocol for things like credit card payments online
Is a mobile app that comes pre-installed on most phones
The TCP/IP protocol stack is built up in several layers because
It's just too complicated to put in one layer
If parts of the system change the rest of the layers are not affected
Layers help to reduce buffering
Different companies each put in their own layer
Internet data is not a continuous stream. It is divided into packets because
Routers need to deal with standard sized and labelled blocks of data
Packets need to be numbered and given IP addresses
There just isn't the bandwidth to deal with streams
Without packets the Internet would just be chaos
