![2
1 Aftab and his family have three computers in their home. He wants to connect the
computers into a network. Explain why he would need:
A router
A browser
Email
An ISP
[4]
2 The use of computer networks can lead to problems in keeping data secure and confidential.
(a) Tick two problems which can affect the security of data.
Data encryption techniques are easy to crack
Data can be accessed without being in the building where it is stored
Data thieves often do not leave physical signs of robbery
Data passwords are easy to guess
[2]
(b) Tick two ways of increasing the confidentiality of data.
Make backups of the data
Users should write down their password in case they forget it
Have a firewall connected to the network
Have different levels of access to the data
[2]
[Turn over](https://image.slidesharecdn.com/form2weekendbreakhomework23-10-14-final-141022201852-conversion-gate01/85/Input-and-Output-Devices-worksheet-1-320.jpg)
![3
3 The main memory in computers is becoming very large. Give three reasons why backing
storage is still needed.
1
2
3
[3]
4 A large company has a LAN. The manager of the company wants to allow all the network
users to access the internet and communicate with other companies.
(a) Describe the hardware and software he would need in order to achieve this.
[4]
(b) Give three disadvantages to the manager of allowing workers to access the internet.
1
2
3
[3]](https://image.slidesharecdn.com/form2weekendbreakhomework23-10-14-final-141022201852-conversion-gate01/85/Input-and-Output-Devices-worksheet-2-320.jpg)
![5 Describe the differences between RAM and ROM.
[4]
6 There are many microprocessor-controlled devices in the modern home. Describe the
effects of these devices on people’s lifestyles.
[4]
7 Encrypted data is used in on-line banking. Describe encryption.
[3]
4
[Turn over](https://image.slidesharecdn.com/form2weekendbreakhomework23-10-14-final-141022201852-conversion-gate01/85/Input-and-Output-Devices-worksheet-3-320.jpg)
![5
8 A floor turtle can use the following instructions:
INSTRUCTION MEANING
FORWARD n Move n mm forward
BACKWARD n Move n mm backward
LEFT t Turn left t degrees
RIGHT t Turn right t degrees
PENUP Lift the pen
PENDOWN Lower the pen
REPEAT n Repeat the following instructions n times
END REPEAT Finish the REPEAT loop
45°
100 mm
start
Complete the set of instructions to draw this shape by filling in the blank lines.
PEN DOWN
90
REPEAT
FORWARD
LEFT
[5]
9 A school keeps records of every student including details of their names, addresses, phone
numbers and dates of birth. Using this information, define the terms file, field and record.
File
Field
Record
[3]](https://image.slidesharecdn.com/form2weekendbreakhomework23-10-14-final-141022201852-conversion-gate01/85/Input-and-Output-Devices-worksheet-4-320.jpg)
Input and Output Devices worksheet
- 1. 2 1 Aftab and his family have three computers in their home. He wants to connect the computers into a network. Explain why he would need: A router A browser Email An ISP [4] 2 The use of computer networks can lead to problems in keeping data secure and confidential. (a) Tick two problems which can affect the security of data. Data encryption techniques are easy to crack Data can be accessed without being in the building where it is stored Data thieves often do not leave physical signs of robbery Data passwords are easy to guess [2] (b) Tick two ways of increasing the confidentiality of data. Make backups of the data Users should write down their password in case they forget it Have a firewall connected to the network Have different levels of access to the data [2] [Turn over
- 2. 3 3 The main memory in computers is becoming very large. Give three reasons why backing storage is still needed. 1 2 3 [3] 4 A large company has a LAN. The manager of the company wants to allow all the network users to access the internet and communicate with other companies. (a) Describe the hardware and software he would need in order to achieve this. [4] (b) Give three disadvantages to the manager of allowing workers to access the internet. 1 2 3 [3]
- 3. 5 Describe the differences between RAM and ROM. [4] 6 There are many microprocessor-controlled devices in the modern home. Describe the effects of these devices on people’s lifestyles. [4] 7 Encrypted data is used in on-line banking. Describe encryption. [3] 4 [Turn over
- 4. 5 8 A floor turtle can use the following instructions: INSTRUCTION MEANING FORWARD n Move n mm forward BACKWARD n Move n mm backward LEFT t Turn left t degrees RIGHT t Turn right t degrees PENUP Lift the pen PENDOWN Lower the pen REPEAT n Repeat the following instructions n times END REPEAT Finish the REPEAT loop 45° 100 mm start Complete the set of instructions to draw this shape by filling in the blank lines. PEN DOWN 90 REPEAT FORWARD LEFT [5] 9 A school keeps records of every student including details of their names, addresses, phone numbers and dates of birth. Using this information, define the terms file, field and record. File Field Record [3]