Securing Data on a Network (Edexcel IGCSE ICT): Exam Questions

Which one of these is a network hardware device that can prevent DDOS attacks on the booking system?

The venue promotes events on a website.

Gail uploads new images for the website.

Explain why WPA is better than WEP for uploading data.

Camille creates a home network.

Describe the function of a VPN.

Camille shares family photographs online with friends.

Camille buys extra online storage.

State how encryption prevents data from being understood.

Joe connects to different types of networks.

Explain one benefit to Joe of using a VPN to connect to the radio station’s network.

Ren logs in to the school network by entering a username and a password.

Which one of these explains why the password is needed?

A school gives every student their own username for the school network. The students do not share one username for the whole class.

Explain one reason why each student has their own username.

A pharmacy stores customer prescription records on its network. Pharmacists and shop assistants must log in to the network before they can use any of the pharmacy's computers.

Explain two ways that usernames and passwords help to keep the prescription records secure.

A firewall checks data before it is allowed into a network.

Give two items of information that a firewall can check to decide whether to allow the data in.

Ari manages a college network. A computer outside the college has been sending harmful data to the network. Ari adds the Internet Protocol (IP) address of that computer to the firewall's block list.

Explain how this protects the college network.

A small travel company has an office network. The network is connected to the internet so that customers can send booking requests to the company's server. The manager wants to install a firewall.

Explain two reasons why the company should install a firewall.

Sami's computer encrypts a file before sending it across the internet. An attacker intercepts the file on its way.

Which one of these is true?

Noor sends an encrypted file to a colleague.

Explain why the colleague needs the key.

Tomi works for an insurance company. Tomi carries a laptop when visiting customers at home. Tomi fills in forms containing the customers' personal details and sends them to the head office over the internet.

Explain two reasons why the company should encrypt this data.

A café lets its customers use its wireless network.

Which one of these encrypts the data sent over the café's wireless network?

Jaya sets up a wireless network at home.

Explain one reason why Jaya should turn on Wi-Fi Protected Access (WPA) for the network.

Give two uses of a virtual private network (VPN).

Remi is travelling and connects a laptop to free public Wi-Fi at an airport.

Explain how using a virtual private network (VPN) stops other people tracking Remi's internet activity.

Staff at a design company sometimes work from home. The company's design files are stored on a file server on the office local area network (LAN).

Explain two reasons why the staff should connect to the office network using a virtual private network (VPN).

A teacher puts revision guides into a shared folder on the school network. Students must be able to open the guides, but they must not be able to change them.

Which one of these access rights should the teacher give the students?

A small company gives every employee read/write access to all of the documents in its shared folders.

Explain one drawback of this.

An accountancy firm stores its clients' financial records on its network. The firm has a manager, several accountants and a receptionist.

Explain two ways the network manager can use file access rights to protect the records.

Give two items of information that a transaction log on a network can record.

Dara is the network manager for an online shop. A customer's delivery address, stored on the shop's network, has been changed without permission.

Explain how the transaction log helps Dara deal with this.

A shop's network server stores all customer orders. The server is backed up every night at midnight. It also keeps a transaction log, which is stored on a separate disk.

At 3 pm one day, the server's hard disk fails and all the order data on it is lost.

Explain how the network manager can use the backup and the transaction log to recover all of the orders.