Question:What are the issues to consider when sending file attachments in your mail? 

- Attachments should not contain executable (.exe) files.
- Attachments should not contain virus.
- File size should be less than the declared file size in email

Question:Write down basic parts of a computer. 

- Central processing unit (CPU)
- Memory and Storage: RAM, ROM-BIOS, Disks
- Input and output devices

Question:Write down factors those affect computer performance. 

- CPU speed: The computer's processor speed governs how fast the CPU will run. The higher the CPU speed the faster the computer will work.
- RAM size: Computer keeps all its working files in RAM while working. So larger the RAM size is, the more comfortable and faster computer can perform.
- Graphics card processor and memory: To display what user wants, computer uses its graphics card. If the graphics card memory is little bit lower than the graphics card shares the RAM to complete its task.
- Number of applications running: Windows is a multitasking system, which means that it can run more than one program at a time.