Describe how ICT is used in marketing
Describe one difference between system software and application software
Peter has installed internet on his home computer in order to use it for browsing. State three ways in which he would prevent viruses from infecting his computer. (3 marks)
State ways in which a network manager can use to ensure that the network is secure
Maranda MOCK 2024 CRE Paper 2
b) What Simeon and Anna said about the life of Jesus during the dedication. (7mks)
Jesus would save people
He would bring glory to Israel
He would be a light to the gentiles
He would be a universal savoir
He would bring judgment to the Israelites
Many people would oppose his work
He would reveal secret thoughts of people
He would be the source of redemption for Jerusalem
KCSE 2016 COMPUTER STUDIES PAPER 1
A manager wishes to replace the current manual system with a computerized one. Describe three areas that must be evaluated to justify the replacement (6 marks)
Headache, back and neck pain may result from the use of computers. State how each of them can be minimized (2mks)
Students of a school intended to elect their school Captain by secret ballot. State three ways in which computers can be used to improve the election process (3mks)
Identify one component common to all computers.
Describe one way developers ensure that their software addresses inclusivity issues.
Incorporate language support features in their software, which allows users to select their preferred language. This can be achieved through multi-language user interfaces and providing translation capabilities. By doing so, developers address language barriers and make the software accessible to a broader audience, demonstrating a commitment to cultural inclusivity.
Gender inclusivity – use gender-neutral language in examples
Cultural/Racial inclusivity – use a variety of ethnicities in photos
Ability inclusivity – represent awareness of disability in some examples
Sexual preference inclusivity – use language that is supportive of LGBTQI+ people
(iii) John von Neumann proposed the concept of a stored program.
State the two items he proposed to store in main memory.
Data
Instructions
State two effects of a computer virus
State advantages and disadvantages of Solid State Drives and Hard Disk Drives
Advantages of of Hard Disk Drive
Disadvantages of Hard Disk Drives
Advantages of Solid State Drives
Disadvantages of SDD
State four factors to consider when acquiring computer software
State advantages of star network topology
Sarah uses a range of computing devices to complete her studies, including a desktop computer at home, a laptop at school and her mobile phone. Outline two advantages of cloud computing for Sarah.
Cloud computing refers to the delivery of on-demand computing resources over the internet. Instead of relying on a local server or personal computer, cloud computing allows users to access and utilize a wide range of computing services and resources hosted on remote servers.
What is meant by RAID technology?
RAID (Redundant Array of Independent Disks) technology refers to a method of combining multiple physical disk drives into a logical unit to improve performance, data availability, and data redundancy. RAID technology is commonly used in storage systems to provide fault tolerance, data protection, and increased storage performance.
The primary purpose of RAID is to create a more reliable and robust storage solution by spreading data across multiple drives and implementing various data redundancy techniques. This helps to mitigate the risk of data loss and system downtime in case of drive failures.
There are different levels or configurations of RAID, each offering different features and trade-offs. The most commonly used RAID levels are:
RAID 0 (Striping): Data is split evenly across multiple drives, resulting in increased performance as data can be accessed from multiple drives simultaneously. However, there is no redundancy, so if one drive fails, data loss can occur.
RAID 1 (Mirroring): Data is duplicated or mirrored across two drives, providing redundancy. If one drive fails, the other drive can still function and serve the data. RAID 1 offers data protection but does not offer increased performance.
RAID 5 (Striping with Parity): Data and parity information are striped across multiple drives, providing both increased performance and fault tolerance. Parity information allows for the recovery of data in case of a single drive failure. RAID 5 requires a minimum of three drives.
RAID 10 (Combination of Mirroring and Striping): RAID 10 combines elements of RAID 1 and RAID 0. It involves mirroring data across two sets of drives and then striping the mirrored sets for increased performance and fault tolerance. RAID 10 provides high levels of data redundancy and performance but requires a minimum of four drives.
Xpat ICT has been tasked to construct a network for an organisation. Explain three factors that the company should consider when selecting the medium for the connectivity (KCSE 2021 Computer Studies Q19c)
State what is meant by each of the following modes of data processing
(i) Batch processing.
(ii) Real-time processing.
(iii) Online processing.
(iv) Off-line processing.
(i) Jobs collected together for processing at a later time
(ii) Output produced quickly enough to affect the next input
(iii) User has direct contact with the processor
(iv) User cannot communicate directly with the processor
Distinguish between one to one and one to many relationships as used in relational databases
One to one - Each record in the parent table has exactly one related record in the child table, and vice versa.
One to Many - Each record in the parent table can have multiple related records in the child table, but each record in the child table is related to only one record in the parent table
Distinguish between microwave and a radiowave transmission and a microwave transmission (KCSE 2017 PP1)
Microwaves can cover shorter distances. On the contrary, radio waves can travel a long distance. Radio wave is usually propagated through sky mode while microwave uses the line of sight propagation.
Identify the type of software used to compress files.
Utility Software