Ignou free assignments

Consider the following page-reference string: 1, 2, 3, 4, 2, 1, 5, 6, 2, 1, 2, 3, 7, 6, 3, 2, 1, 2, 3, 6

How many page faults would occur for following replacement algorithms for a memory with 4 frames? Remember that all frames are initially emp...Read More

Ignou free assignments

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Explain MVD (Multi Valued Dependencies) and join dependency with the help of an example of your choice.

Define a simple hash-join and explain the process and cost calculations of hash-join with the help of an example.

Define the concepts of specialization and generalization. Give one example(generalization - specialization hierarchy) of where these concepts are useful in the above E- R diagram

Differentiate between a weak entity and a strong entity set. Identify these entity sets in the above diagram. How will you convert a weak entity set to a strong entity set?

Using the coaching institute example above, write relational – algebra expressions to find out the following queries: Find out students who have secured more than 70 percent in physics and chemistry. Find out part time faculties who teaches two subjects

Create an object oriented database for the following UML class diagram. Make assumption about your attributes and facts.

Create appropriate tables and relationship among them for the E-R design

Assume we need to download a text document at a rate of 100 pages per minute. What is required bit rate of the channel. Assume Page size = 24 lines Each line = 81 characters

Find CRC for the data polynomial x 9 + x 7 + x 3 +x 2 + 1 with generator polynomial x 3 + x + 1.

Suppose you are developing a standard for a new type of a network. You need to decide whether your network will use Virtual Circuits (VCs) or datagram routing. What are the Pros & Cons for using VCs ?

Why is that packet switching is said to employ statistical multiplexing ? Contrast statistical multiplexing with the multiplexing that take place in TDM.

Explain the process of generating a digital signature. What are its benefits ?

What is called Constellation diagram ? Illustrate Constellation diagram of QAM – 16 and QAM – 64.

Differentiate between Leaky bucket and Token bucket traffic shaper. Why is traffic shaping needed ?

Explain and illustrate sliding window Protocol with window size of 5. How does the scheme improve the efficiency of transmission ?

Explain the function and working model of Kerberos with the help of a diagram.

Write Dijkstra’s algorithm and explain how does it work. Use the algorithm to find the length of a shortest path between the vertices A and F in the weighted graph shown in Figure 1. Show all the intermediate steps.

Explain how a network congestion is controlled using slow start algorithm in TCP with help of an illustration. Is congestion control and flow control are equivalent?

Describe how MACAW is an improvement over MACA ?

Write a monitor solution to the dinning-philosopher problem.

Study and implement the Lamport’s Bakery Algorithm for Interprocess synchronization using C/C++ programming language.

Discuss in detail the features, Process management, Memory management, I/O and File management and Security and Protection in Windows 10 Operating System.

Consider the following page-reference string: 1, 2, 3, 4, 2, 1, 5, 6, 2, 1, 2, 3, 7, 6, 3, 2, 1, 2, 3, 6

Also calculate the average turn around time, average waiting time, processor utilization and throughput for each of the algorithms mentioned in (i).

Draw the Gantt charts illustrating the execution of these processes using the FCFS, SJF, Round Robin (with quantum = 1) and Priority Based Scheduling algorithms.

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