FAISALABAD BOARD 2016
PAPER COMPUTER SCIENCE PART-I
Time: 20 Minutes
(Objective Part)
Marks: 15
Note: You have four choke for each objective type question as A, B, C and D The choice which you think is correct; fill that circle in front of that question number. Use marker or pen to fill the circles. Cutting or filling two or more circles will result in zero mark in that question.

Question#1

• Which one is storage device?
  
  (a) Magnetic tape
  (b) Printer
  (c) Keyboard
  (d) Camera

• Which key removes the character to the right of the cursor?
  
  (a) Esc
  (b) Alt
  (c) Delete
  (d) Backspace

• Which layer of OSI model does data compression?
  
  (a) Physical layer
• (b) Network layer
  (c) Session layer
  (d) Presentation layer

• Which device does physical connection of each computer to a network?
  
  (a) Network Interface Card
  (b) Bridge
  (c) Router
  (d) Gateway

• In EBCDIC, how many bits to represent a character, are used?
  
  (a) 2
  (b) 4
  (c) 6
  (d) 8

• An important property of fiber optic cable is:
  
  (a) Noise
  (b) Refraction
  (c) Interference
  (d) Attenuation

• Process of automating office tasks using computer is:
  
  (a) Office support
  (b) Office automation
  (c) Data management
  (d) Reprographics
  
  
• How many bits are carried by one line of data bus?
  
  (a) 1
  (b) 2
  (c) 3
  (d) 4

• Which one is a signal?
  
  (a) 1
  (b) DMA
  (c) Interrupt
  (d) Memory

• Making illegal copies of copyrighted software is called:
  
  (a) Software hacking
  (b) Software distribution
  (c) Software browsing
  (d) Software piracy

• Which one is a secret word that is used to prevent unauthorized access?
  
  (a) Biometrics
  (b) Password
  (c) Copyright
  (d) Backup

• Add new hardware option exists in:
  
  (a) Main menu
  (b) Status bar
  (c) Task bar
  (d) Control panel
  
  
• Which is a word processor?
  
  (a) MS-Word
  (b) Photoshop
  (c) MS-Excel
  (d) MS-Powerpoint
  
  
• A workbook is a group of:
  
  (a) Tables
  (b) Formulas
  (c) Sheets
  (d) Functions
  
  
• Software that is used to view and search pages on internet is:
  
  (a) Webserver
  (b) Web browser
  (c) Website
  (d) Webpage

Thne: 2:10 (Two hours ten min)
(Subjective Part)
Marks: 60
Section I

2. Attempt any SIX short questions. (6 x 2 = 12)

• Which features distinguish one type of display screen from other? (Write name)
• Define bit and byte.
• What is the use of Ctrl key?
• Differentiate between intranet and extranet.
• Write two uses of bridge in network.
• What is uploading and downloading of data?
• What is ASCII code?
• Compare serial and parallel transmission.
• Write two characteristics of analog signal.

3. Attempt any SIX short questions. (6 x 2 =12)

• Define computer simulation.
• Describe video conferencing.
• Distinguish between source code and object code.
• Write function performed by logic unit.
• What is meant by serial port?
• Describe computer program.
• List name of four different address registers.
• State use of biometrices.
• Write basic function of antivirus software.

4. Attempt any SIX short questions. (6 x 2 = 12)

• What do you mean by graphical user interface? Explain with at least one example.
• Define multi - tasking operating system with example.
• What is word art option in MS - Word? How can you insert it?
• Describe two typing modes in MS - Word.
• List any two differences in cut and copy option.
• Explain relative addresses with example in MS - Excel.
• Write any two differences between active cell and passive cell in MS - Excel.
• What is a website? Describe with example.
• Describe the concept of uploading and downloading.

SECTION-II

Attempt any three questions: (8 x 3 = 24)

5. What is Non - Impact printer? Discuss its three different types.
6. What is Ring Topology? Discuss its working with diagram. Discuss its any two advantages and any two disadvantages.
7. Define guided media. Briefly discuss three different guided media.
8. What is Random Access Memory (RAM)? Describe its two types.
9. Explain four different causes of computer virus.