JAMB Computer Studies 2024
Questions & Answers

A student might mistakenly think cloud storage involves manual backups or limited accessibility due to network dependency. However, cloud storage fundamentally allows users to maintain and retrieve data over the internet, providing remote data access from any compatible device rather than being confined to local storage. Common mistake: Confusing cloud-based remote access with physical local storage limitations.

A student might select 1110 or 1111 through a calculation error when converting bases. To find the binary equivalent, first convert octal 14 to decimal by calculating 1×8 + 4, which equals 12; converting 12 to binary through successive division by 2 yields 1100. Common mistake: Forgetting to convert the octal base into decimal before attempting the final binary division steps.

A student might confuse spreadsheet software with text editing because both handle data input and basic formatting. Spreadsheet applications are specifically designed for data analysis utilizing formulas, functions, charts, and pivot tables, setting them apart from simple word processors or code debuggers. Common mistake: Mistaking a data-crunching grid tool for a general text-creation program.

A student might mistakenly believe a constant is a loop structure or a value that changes during execution. In programming, a constant represents a fixed value—such as PI = 3.14159—that remains unchanged throughout the entire program execution, unlike a mutable variable. Common mistake: Confusing constants with standard variables whose values can be reassigned.

A student might pick a portable laptop or a server computer, assuming hybrid refers to size or network versatility. A hybrid computer specifically merges both analog features (which process continuous data) and digital features (which process discrete data), commonly utilized in complex environments like medical imaging. Common mistake: Associating 'hybrid' with physical device portability rather than its dual analog-digital processing architecture.

Students might mistakenly choose options like HighText Transmission Protocol because they sound similar to web terminology, but the correct choice is HyperText Transfer Protocol. Clients and servers on the internet rely on this specific standard to govern how webpages are transferred. Common mistake: Confusing technical acronyms with plausible-sounding variations that alter key words.

Candidates might lean toward answers like Vacuum tubes or Transistors due to their historical ties to computing history, but those belong to earlier generations. Artificial intelligence and parallel processing are the defining hallmarks of modern fifth-generation systems. Common mistake: Mixing up the technological milestones of early hardware generations with fifth-generation innovations.

Test-takers could be tempted by syntax mistakes since both represent coding errors, but syntax issues are caught during compilation. A runtime error, such as a division by zero, manifests specifically during program execution. Common mistake: Failing to distinguish between compile-time syntax flaws and issues that emerge while the program is running.

One might incorrectly select USB, HDMI, or VGA because they are all recognizable hardware cables, yet those handle peripherals, video and audio, or displays rather than networking. Ethernet options like Cat5e are specifically designed for wired network connections. Common mistake: Grouping all types of computer cables together without considering their specific functions.

A student might guess other values through improper conversion math, but taking binary 10000 gives 1 x 2 to the 4th power, which totals 16 in decimal. Converting this 16 into hexadecimal yields 16 divided by 16 resulting in 1 with a remainder of 0, giving us 10. Common mistake: Miscalculating powers of two during base conversions.

Options like MS-DOS or Windows XP might seem correct because they are well-known operating systems, but they are primarily designed for single-user environments. Unix sets itself apart by supporting multiple simultaneous users, fulfilling the multi-user OS definition. Common mistake: Assuming all traditional operating systems inherently support multiple concurrent users.

Learners might mistakenly pick reducing system performance if they view updates negatively, but upgrades are meant to improve functionality. Software updates introduce new features, address existing bugs, and enhance security to optimize operations. Common mistake: Overlooking the security and bug-fixing benefits of routine application updates.

RAM, CPU, or SSD might look appealing if a student confuses internal components with external peripherals, but those are internal parts or storage devices. VGA stands for Video Graphics Array, making it a connector meant for displays. Common mistake: Confusing internal hardware components with input or output interface connectors.

One might think a gateway stores data or converts signals, but its primary architecture is designed to link diverse environments. By connecting networks with different protocols, such as bridging a local area network to a wide area network, it facilitates communication across disparate systems. Common mistake: Confusing network gateways with data storage units or signal converters.

A student might incorrectly choose non-volatile or permanent storage, confusing cache with long-term drives like hard disks. Cache memory is actually volatile and high-speed, built to store frequently accessed data for quick CPU access. Common mistake: Equating the high-speed nature of cache memory with permanent storage capacity.

Universal Data Protocol might look correct at a glance due to the word universal, but the accurate terminology is User Datagram Protocol. This connectionless protocol enables fast data transmission, making it ideal for services like video streaming. Common mistake: Swapping out standard protocol acronym words like User for Universal.

Students may mistakenly choose network routing or image compression if they broadly associate validation with any data processing task. A range check specifically verifies that data falls within acceptable limits, like checking if an age is between 1 and 100, which enhances data integrity. Common mistake: Confusing data verification techniques with general system operations.

A candidate might miscalculate the arithmetic by messing up binary subtraction borrowing steps. Converting the values first shows 1100 is 12 and 101 is 5, and subtracting them leaves 7. Converting 7 back through successive divisions by 2 yields 0111. Common mistake: Errors in direct binary subtraction leading to incorrect decimal equivalents.

An if statement or variable declaration might tempt a student looking at general programming terms, but those handle conditionals or variables rather than repetition. A while loop specifically repeats code while a condition remains true. Common mistake: Confusing conditional branching statements with iterative looping structures.

One might mistakenly think a password increases processing speed or compiles code if they view it as a general system tool. A password functions to verify a user's identity, thereby securing access to sensitive data and preventing unauthorized use. Common mistake: Misunderstanding security credentials as performance-enhancing utilities.