Explain one benefit to a user if the program is distributed as free software
Utility software are operating system programs designed to maintain the functionality of a computer system.
Describe three types of utility software that are provided to help maintain the security and integrity of computer data.
Explain a situation when each of the following Desktop Publishing programs features may be used when creating a document
(i) Crop - used when handling a graphic and there is a need to remove some of the portions in the graphic
(ii)Transparency - used when there is a need to make background of a graphic visible
Explain the difference between main memory and secondary storage.
Distinguish between an optical scanner and a magnetic ink scanner
Mention at least two trends in the technological revolution of computers.
State the functions of the following features in word processors
An organisation that supplies audiobooks over the internet is moving into a new office building.
(a) One reason for networking devices is to provide access to the internet.
(i) Give two other reasons for connecting devices to networks.
State the uses of 3D printers
KCSE 2016 COMPUTER STUDIES PAPER 1
State the function of each of the following keys on the computer keyboard : (2mks)
Backspace;
Insert
An organization intends to replace an existing system by carrying out the process in stages .
Name the implementation strategy ; (1mk)
Give two reasons why the organization is opting to use the implementation strategy in (a) above (2mks)
Define Domain integrity
Domain integrity - ensures that all data in a field contain valid values
Distinguish between real-time and distributed operating systems (KCSE 2018)
Describe what the traffic control program should do when an emergency occurs.
give uninterrupted path through the system of linked traffic lights/
green link - wave
turn all lights to red
activate emergency generator
alarm
State two components of the CPU
Any two from:
The Acme company stores data for a private scientific research group. It has recently upgraded its storage capacity and needs to dispose of its existing hard drives securely. Outline two methods for the secure disposal of the data on the hard drives.
Acme company needs to ensure that if they are reselling the drives they wipe the drive (this should be done regardless of the destruction of the drive) to the DoD standard.
This would ensure that any software cannot be used to locate files.
802.3 is the standard for ethernet wired networks and 802.11x is the standard for ethernet
wireless networks.
Outline why standards such as these are important in the development of network devices and
software.
Explain the purpose of each of the following features of a spreadsheet chart (KCSE 2021 Computer Studies, Q19 (a))
Legend
A data series
Data Marker
Explain the purpose of each of the following features of a spreadsheet chart (KCSE 2021, Q19 (a))
Legend
A data series
Data Marker
https://www.lifewire.com/data-series-data-points-data-labels-3123411
Distinguish between a client-server and a peer-to-peer network
A virus is a specific category of malware. Describe three other different categories of malware.
Trojan (horse); a program which misleads the user into thinking it is another
piece of software which, when run, executes another program;
Spyware; a program which records data such as usernames and passwords on
a host system and forwards the information to a third party;
Adware; code embedded or attached to program files which will persistently
show adverts (that attempt to generate revenue);
Worm; code which will run autonomously and replicates itself on a host system;
Ransomware; a program that encrypts a user’s data to make it unreadable until
they pay for the key;
Remote Access Tool (RAT); allows access to control and monitor a computer
from a remote network location;
Rootkit; malware that has managed to gain ‘root’ admin privileges;
Bots/Zombies; a program installed on a computer that performs a job for the
remote owner of the bot/zombie such as sending spam or sending web requests
to perform a DOS or attack a computer system;
Scareware; malware that tells you something is wrong with your system in an
attempt to get you to make a purchase;
Keylogger; a program that monitors/records a user’s keystrokes in order to steal
passwords/confidential details
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.