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PPSC · PMS Punjab 2019

Computer Science

100 marks · 3 hours · 6 questions
This paper Computer Science · all yearsQ. 3 · What is the meant by…Q. 4 · Define OSI model and explain…Q. 5 · Explain the following connecting devices:…Q. 6 · Recent software development is employing…Q. 7 · What is Semaphore?Q. 8 · What is the complexity of…With this paper← 20162021 →
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Not yet checked 6 of 6 questions have not yet been compared with the official paper.

Section A

Q. 3
  1. (a)What is the meant by parity bit?
  2. (b)Draw the XOR & XNOR Gates.
  3. (c)Simplify the Boolean function using k-map and draw the circuit diagram.
  4. (d)Design a full adder circuit with the two half adders.
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Q. 4
  1. (a)Define OSI model and explain the functioning of each layer in OSI model.
  2. (b)Define HDLC.
  3. (c)What are the characteristics of fast Ethernet?
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Q. 5
  1. (a)Explain the following connecting devices: i) Passive hub ii) Repeater iii) Bridge iv) Router v) Gateway Connecting Devices in Computer Networks Networking devices serve as the physical and logical infrastructure to connect segments and manage traffic flow across OSI layers.
  2. (b)What is difference between Combinational logic & Sequential logic?
  3. (c)What are the differences between TCP and UDP header formats?
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Q. 6
  1. (a)Recent software development is employing Agile Software Development Process.
  2. (b)Write an algorithm for a function void addNodeSorted(int data) that adds a new node in a sorted linked list so that the list remains sorted.
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Q. 7
  1. (a)What is Semaphore?
  2. (b)Explain the concept of Page Fault and the situations in which page fault occurs.
  3. (c)What is the concept of Virtual Memory, and how does it increase the performance of an operating system?
  4. (d)Graph is one of the most widely used application data structure for real life problems.
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Q. 8
  1. (a)What is the complexity of the following algorithms?
  2. (b)What are two main advantages of Block Chain Technology?
  3. (c)Write a function void searchElement(int data) to find a data element in a Binary Search Tree.
  4. (d)What are the main components of a compiler?
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(20)

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About this paper

The 2019 PMS Punjab Computer Science paper set by the PPSC. Question wording only; questions marked “Not yet checked” have not been compared with the official paper yet.

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