93rd 2022 3. (a) Describe the factors that affecting processing speed of computers (7M). What are the main features of laptop computers (3)? 3. (b) Describe the differences between mini computer and mainframe computer (8). How to overcome computer virus attack (2)?

 3(a): Following are some important factors that affect the processing speed of a computer:

Registers

RAM

System Clock

Buses

Cache Memory

Core Count

Registers

The first factor that affects the processing speed of a computer is a register. A register is a small, high-speed memory inside a CPU. CPU contains a number of registers.

The data and instructions are stored by registers while the CPU processes them. The amount of data with which the computer can work at one time is determined by the size of the registers. This is also named word size.

RAM

factors that affect the processing speed

The size of RAM is also included in the factors that affect the processing speed of the computer. The bigger amount of RAM means that more program instructions and data can be stored in memory.

If a computer does not have enough memory to run a program, it must move data between RAM and the hard disk frequently. This process is called swapping can greatly slow a computer’s performance.

System Clock

A system clock is an electronic component that is an important factor that affects the processing speed of the computer. It generates electric signals at a fast speed. The time required to execute a single instruction is called clock speed.

Clock speed tells us how much time a CPU takes to execute each instruction. CPU takes from 1 to 6 clock ticks to execute one instruction.

Buses: Factors Affecting Processing speed of the computer. The physical path between the components of a computer is a bus. Data and instructions travel along with these pats. The width of the bus decides the number of bits that can be transmitted between the CPU and other devices.

Cache Memory

A cache (pronounced “cash”) is a high-speed memory that holds the most recent data and instructions that have been loaded by the CPU. It is designed to speed up the transfer of data and instructions.

Core Count

The number of cores home is the number of the structures that our CPU can execute at the same time. For example, a quad-core CPU can execute four instructions at the same time because it’s got four cores. Whereas a hex-core CPU can execute six instructions at the same time because it’s got six cores.

3(a) 2nd Part: Main Features of laptop computer

USB Port. USB Type-C offers speed and functionality.

Display. OLED screen displays better than real life images.

Touchscreen. Makes the interface simpler and eases access.

2-in-1 PCs. Next-gen laptops that can fold flat and even detach for a tablet experience.

Wi-Fi. For wifi we have not to any ethernet port for laptop computer .

Graphics: We can easily designed using photoshop for built in graphics in laptop.

3 (b) the differences between mini computer and mainframe computer:

3(b) 2nd Portion: We overcome computer virus attack as below way

1: Install quality antivirus 

2: Install real-time anti-spyware protection 

3: Keep anti-malware applications current 

4: Perform daily scans 

5: Disable auto run 

6: Disable image previews in Outlook 

7: Don’t click on email links or attachments 

8: Surf smart 

9: Use a hardware-based firewall 

10: Deploy DNS protection