AQA A Level Computer Science - fundamentals of comms and network

What is this?

• Switch
• router
• Modem
• Playstation

What is collision (Networking)?

• Data is being sent at the same time from diffrent  computers and gets deleted 
• Data is being sent at the same time from another computer increasing its speed 
• When two cars crash
• When a router makes smart decisions  

What is a MAC Address ?

• Where a Big Mac Lives 
• An indetifier for a networking device 
• An serial code for a device  
• Password for a router

What is a packet (Networking)?

• Busy work 
• Formatted unit of data
• When data is being sent at the same time from different PC's and gets deleted.
• Modem

Why do we MOSTLY need routers?

• To send packets to their destination
• For faster data speed
• WiFi
• To have better signal

How many unique IP addresses could be made in a fixed-length IP address system using 6 bits?

• 6 Users

• 12 Users

• 32 Users

• 64 Users

Which two of the following statements are true about routing on the Internet.

• Information travelling between two computers over the Internet will always take the same path.

• Your router receives all the traffic of the Internet and delivers to your computer only the messages intended for you.

• There is one router which receives and redirects all the traffic of the Internet.

• A packet travelling between two computers on the Internet may be rerouted many times along the way.

• A packet contains addressing information to allow routers to decide how best to forward along that packet towards its destination.

What is the purpose of a networking hub?

• To connect the nodes in a physical star topology network into a logical bus topology
• To forward packets to only the destination port based on media access control (MAC) addresses
• To regenerate a signal to improve signal strength over transmission distances
• To facilitate communication and provide enhanced security to wireless devices

What is the purpose of an access point?

• To extend the physical range of a wireless local area network (WLAN) and facilitate communications with wireless devices
• To transfer both electrical power and data to remote devices over twisted pair cable
• To connect the nodes in a physical star topology network into a logical bus topology
• To modulate and demodulate digital data to an analog signal

How is database transferred across a network

• As it is
• packets
• files
• none of these