Danho
ZIMSEC O Level · 7014/2 · N2014

Computer Science Paper 2 November 2014

Questions
35
Total marks
100
Time allowed
150 min
Syllabus code
7014/2

Sit this paper online

Questions
35
Pass mark
21
Sit this paper

Answer every question in the printed order, get marked at the end, then see the answers.

The questions

Question 101

[1 marks]Hardware and software
Which term describes the physical components of a computer system, such as a mouse, keyboard, printer or scanner?

Answer this when you sit the paper.

Question 102

[1 marks]Hardware and software
Which term describes the set of programs that controls computer hardware, such as a word processor, spreadsheet or operating system?

Answer this when you sit the paper.

Question 103

[1 marks]Hardware and software
Which of the following statements about ROM and RAM is true?
  1. ARAM loses its data when power is switched off, but ROM does not.
  2. BROM is volatile while RAM is non-volatile, so ROM would lose its boot-up instructions every time the power was cut
  3. CROM stores the user's programs and data during processing.
  4. DRAM contains the computer's boot-up files.

Question 201

[1 marks]Input devices
Which of the following is an input device commonly found on a Point of Sale (POS) terminal, used to read product barcodes?
  1. ABarcode reader
  2. BPlotter
  3. CProjector
  4. DDot matrix printer

Question 202

[1 marks]Input devices
Give the term for the device on a Point of Sale (POS) terminal that reads the details stored on a customer's payment card.

Answer this when you sit the paper.

Question 301

[1 marks]Internal components of a computer system
Which internal component of a computer performs calculations and logical operations?
  1. ASystem clock
  2. BArithmetic Logic Unit (ALU)
  3. CBus
  4. DControl unit

Question 302

[1 marks]Internal components of a computer system
Which internal component of a computer is responsible for executing program instructions?
  1. AArithmetic Logic Unit (ALU)
  2. BRAM
  3. CROM
  4. DControl unit

Question 303

[1 marks]Internal components of a computer system
Name the internal computer component used for temporary storage of data and instructions that are currently being processed or awaiting processing.

Answer this when you sit the paper.

Question 401

[1 marks]IT personnel
Which IT personnel role primarily involves entering and verifying data into a computer system?
  1. ASystems analyst
  2. BProgrammer
  3. CData capturing clerk
  4. DHardware technician

Question 402

[1 marks]IT personnel
Which IT personnel role is responsible for designing, writing and debugging computer programs?
  1. ASystems analyst
  2. BProgrammer
  3. CNetwork technician
  4. DData capturing clerk

Question 403

[1 marks]IT personnel
Name the IT personnel role responsible for identifying computer system problems and designing or recommending solutions.

Answer this when you sit the paper.

Question 501

[1 marks]Internet threats
Which term describes a scam where thieves send deceptive electronic messages to trick people into disclosing personal information such as PINs and passwords?
  1. APiracy
  2. BSpam
  3. CHacking
  4. DPhishing

Question 502

[1 marks]Internet threats
Give the term for unsolicited messages, such as e-mails, sent to a large number of people to advertise or spread malware.

Answer this when you sit the paper.

Question 601

[1 marks]Computer control and monitoring
In a hospital computer system that monitors a patient's condition, which of the following is an input to the system?
  1. ABlood pressure reading from a sensor
  2. BPrinted graph of readings
  3. CAlarm sound
  4. DNurse's report typed after the shift

Question 602

[1 marks]Computer control and monitoring
In a hospital patient-monitoring system, what does the computer do with the analogue signal received from a sensor before it can process it?
  1. ADeletes it immediately
  2. BPrints it directly without change
  3. CConverts it to digital form
  4. DConverts it to audio form

Question 603

[1 marks]Computer control and monitoring
Give one example of an output produced by a computerised patient-monitoring system in a hospital.

Answer this when you sit the paper.

Question 701

[1 marks]Expert systems
Give the term for a computer program that mimics the knowledge and experience of a human expert, e.g. for mineral prospecting.

Answer this when you sit the paper.

Question 702

[1 marks]Expert systems
Which of the following is a step taken when creating and testing an expert system?
  1. APrinting the final report card once all subject grades have already been recorded and processed
  2. BCompiling the program's machine code directly from binary
  3. CAcquiring information from human experts to populate the knowledge base
  4. DFormatting the hard disk before installation

Question 801

[1 marks]Systems analysis and design
Which of the following is a method of data collection used during systems analysis fact-finding?
  1. AEncryption
  2. BCompiling
  3. CDebugging
  4. DInterviews

Question 802

[1 marks]Systems analysis and design
During which stage of the systems development life cycle are data flow diagrams produced and requirements analysis carried out?
  1. AImplementation
  2. BMaintenance
  3. CAnalysis
  4. DDesign

Question 803

[1 marks]Systems analysis and design
Give the term for the study carried out to help management decide whether a proposed computer system is worth developing.

Answer this when you sit the paper.

Question 901

[1 marks]Programming constructs, algorithms and translators
An algorithm adds 5 numbers input one at a time and must output their average. Which operation is applied to the running total after all 5 numbers have been added?
  1. ASubtract 5 from the total
  2. BDivide the total by 5
  3. CMultiply the total by 5
  4. DAdd 5 to the total

Question 902

[1 marks]Programming constructs, algorithms and translators
Which of the following is a true difference between a compiler and an interpreter?
  1. AA compiler translates the whole program at once, while an interpreter translates statement by statement.
  2. BAn interpreter produces object code, while a compiler does not.
  3. CA compiler cannot report errors, while an interpreter cannot execute programs.
  4. DA compiler translates statement by statement, while an interpreter translates the whole program at once.

Question 903

[1 marks]Programming constructs, algorithms and translators
Which of the following is an advantage of a high level programming language over a low level (machine) language?
  1. AIt is easier to learn because it resembles human language
  2. BIt uses binary instructions directly understood by hardware
  3. CIt executes noticeably faster than the equivalent machine code once compiled
  4. DIt requires no translation before execution

Question 1001

[1 marks]Networks and communication
Which of the following best describes a peer-to-peer network?
  1. AA network limited to a single computer with multiple users who each log in through their own separate terminal
  2. BA network that connects computers only across different countries via satellite
  3. CA network where two or more PCs are connected and share resources without going through a separate server
  4. DA network where all computers must connect through a central mainframe server

Question 1002

[1 marks]Networks and communication
Name the type of internet connection best suited to video conferencing because it can carry large amounts of data, such as video, per second.

Answer this when you sit the paper.

Question 1003

[1 marks]Networks and communication
Which of the following is a benefit of a school having its own website?
  1. AIncreasing the school's electricity bill
  2. BPreventing learners from accessing e-learning resources
  3. CRemoving the need for teachers
  4. DAdvertising the school and providing information to learners and parents

Question 1101

[1 marks]Applications software
Give the term for the technique of combining a template document with a database of names and addresses to produce many personalised letters.

Answer this when you sit the paper.

Question 1102

[1 marks]Applications software
In a spreadsheet, cell A1 contains 5, A2 contains 7 and A3 contains 10. Which formula correctly adds the three numbers and divides the total by 3?
  1. A=SUM(A1:A3)*3
  2. B=SUM(A1:A3)/3
  3. C=A1+A2+A3/3
  4. D=AVERAGE(A1:A3)*3

Question 1103

[1 marks]Applications software
Give the term for the structure that holds data in a database, made up of rows and columns of related records.

Answer this when you sit the paper.

Question 1201

[1 marks]Health and safety
Which of the following is a health problem that can be caused by prolonged computer use, together with an appropriate solution?
  1. AIncreased appetite, solved by removing the keyboard
  2. BEyestrain, solved by using an anti-glare screen and taking regular breaks
  3. CHearing loss, which is instead prevented by using a footrest and taking regular screen breaks
  4. DImproved eyesight, solved by reducing screen brightness

Question 1202

[1 marks]Health and safety
Give one health problem that can result from prolonged, poor-posture computer use, commonly relieved by using an adjustable chair and a footrest.

Answer this when you sit the paper.

Question 1301

[1 marks]Local area networks and communication services
Give the term for the interconnection of computers and peripheral devices covering a small geographical area, such as one building.

Answer this when you sit the paper.

Question 1302

[1 marks]Local area networks and communication services
Which of the following is an advantage of Electronic Mail (e-mail) over traditional postal mail?
  1. AIt is a faster and cheaper way to communicate, eliminating long-distance postage costs
  2. BIt reaches any recipient within about one hour, no matter their location worldwide
  3. CIt cannot be sent to more than one recipient at a time
  4. DIt requires the recipient to be present to receive it

Question 1303

[1 marks]Local area networks and communication services
Which of the following is an advantage of mobile phones?
  1. AThey cannot be used for communication while travelling
  2. BThey require a fixed landline connection to operate
  3. CThey cannot store contact information
  4. DThey are portable and can connect to the internet

More sittings of this paper

The answers, and why they are the answers

Sit the paper here to see which ones you got right. Danho explains every question, keeps your score, and works without a connection.

Get it on Google PlayDownload on the App Store