2023 final exam Flashcards
Briefly discuss any two (2) functions of the operating system in the
computer
Booting the computer
Loads the essential part of operating system (kernel) into memory.
Reads opening batch of instructions.
File management - Keeps track of stored files on computer so they can be retrieved when needed
State any two client operating system that you know. [2 marks]
Windows
Android
List and explain any five (5) components found in the system case.
Motherboard:
The main circuit board that connects all other components and acts as the communication hub.
CPU (Central Processing Unit): The brain of the computer, responsible for processing instructions and performing calculations.
RAM (Random Access Memory): Provides temporary storage for frequently accessed data, allowing for faster program execution.
Storage Drives (HDD/SSD): Permanent storage for data like files, applications, and the operating system.
Power Supply Unit (PSU): Converts incoming AC power to DC voltages required by different system components.
Provide a list of any five (5) items you should confirm when selecting a replacement motherboard of a computer. [5 marks]
Socket Compatibility:
Ensure the motherboard socket matches your CPU type (e.g., LGA1700 for Intel 12th Gen).
Form Factor: Verify the motherboard size (ATX, mATX, etc.) fits your case.
RAM Compatibility: Check if the motherboard supports your desired RAM type (DDR4) and speed.
Storage Connectivity: Confirm it has enough SATA ports for your hard drives and SSDs.
Features: Ensure it has the features you need (e.g., Wi-Fi, specific number of USB ports).
Differentiate between the following:
i) ROM and RAM. [2 marks]
OM (Read-Only Memory): Stores permanent data (like boot instructions) that cannot be changed by the user. It retains data even without power.
RAM (Random Access Memory): Holds temporary data (like running programs) that gets erased when the computer shuts down. It allows fast data access and modification.
Differentiate between the following: SATA and SCSI (Small Computer Systems Interface) cables. [2 marks]
SATA (Serial ATA):
Newer technology, widely used in modern computers. Slimmer 7-pin cables for data transfer. Lower cost and simpler connection. Slower data transfer speeds compared to SCSI.
SCSI (Small Computer Systems Interface):
Older technology, used in high-performance servers and workstations. Wider cables with 50 or more pins. More complex setup and higher cost. Offers faster data transfer speeds than SATA.
Describe the four layers of the TCP/IP Model. [8 Marks]
A
T
I
N
For each of the layers in the TCP/IP model provide an example of a
protocol/service. [4 marks]
Give one (1) example of a network Operating System (NOS).
Microsoft Windows Server
.
State any one (1) power protection device that protects your computer
from power fluctuations
surge protector
Explain how the device in e) protects your computer. [2 marks]
diverting excess voltage away from your device
State two (2) signs of RAM failure on your computer. [2 marks]
Frequent crashes or unexpected reboots.
Blue screens of death
List any three (3) components of preventative maintenance. [3marks]
DUST
INTERNAL COMPONENTS
ENVIRONMENTAL FACTORS
Expand and describe LAN [2 marks]
A wired network
consisting of a switch and network devices in a
limited geographical area.
Expand and describe WLAN [2 marks]
Connects multiple wireless
devices and uses an access point