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1. BPSC
Assistant Network Engineer
Written Exam-2020
1. (i) What is Congestion Control? Ways of
Congestion Control? [373]
(ii) What is HTML and CSS [454, 460]
2. (i) Describe Read/Write Operation in Optical
Disk? [851]
(ii) What is Cache Memory? Difference
Between Cache and Main Memory?[1222]
3. (i) Describe Propositional Logic and Predicate
Logic with Example [919, 922]
(ii) What is Knowledge ? How Human
Knowledge in Converted into Computer, Describe
with Flow
Diagram. [787]
4. (i) What is DBMS? Describe the way of
normalize a database? [27, 700]
(ii) What is Recursion? Write a Simple C
Program using Recursion? [43]
5. (i) What is formatted Input/Output Statement?
How to take input from keyboard? Meaning of
%d.
(ii) Write the format of if………statement?
Write a C program to find out the sum of the
Series 1+3+5+7……..+n
6. (i) What is computer network? Describe about
computer network?
(ii) What is E Commerce? Types of E-
commerce? What is Search Engine? Write
Example of Search Engine
7. (i) What is Logic Gate ? write Basic Logic Gate
and Describe with Truth Table?
(ii) Write The truth table of R-S Flip-Flop and
Describe the Characteristics ?
8. (i) What is MVC Framework? Advantage of
MVC?
(ii) Write down the Step of Software
Development?
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Exam Taker: BPSC; Exam Date: 19.12.2019
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1. Answer the following question.
a) Write down the Merge Sort
algorithm. What is the time
complexity of this algorithm? [183]
b) How a graph can is represented?
Explain with example.[184]
c) What is TCP protocol? How does it
work? [388]
2. Answer the following question.
a) Differentiate between e-commerce
and e-business. How does e-
commerce exploit self-serviced
strategy to increase the market
share? [1222]
b) Distinguish between traditional
business planning assumptions and
today’s sense and response strategy.
[1456]
c) Write down the advantages o using
intranet in business organization.
How is legacy system included in
intranet of an organization? [1456].
3. Answer the following question.
a) What do you mean by page table
for memory management? Explain
with example. [613]
b) What are the conditions for a
deadlock situation? [588]
c) What are the differences between
process and thread? [1013]
4. Answer the following question.
a) Write down a function to compute
the sum of the row an n×m matrix
of integer. [1494]
b) Write down a C function to sort a
list of strings in alphabetic order.
[1494]
c. Is it possible to convert all “if-else”
code into “switch” code block? Give an
example. [1510]
5. Answer the following question.
a) Solve the following problem and
represent the result in
hexadecimal 3.5(10)+2.4-
(8)+1A.7(16)
b. Simplify the following expression
(q(pq))p. [921]
c. Simplify F (A, B, C, D) =
ACD+AB+𝐃
̅ + 𝐀𝐂
̅𝐃 using K-map
and draw the simplified circuit
diagram.
d. Draw the circuit diagram of a
mod-10 asynchronous ripple up
counter and explain its operation
6. Answer the following question.
a) An I/O system with a simple disk gets
an average 50 I/O requests per second
and average time for a disk to serve
an I/O request is 10ms. Calculate the
utilization of I/O system.
Answer: Server Utilization = Arrival
rate X timeserver = 50 X 0.01 = 0.50
(Ans)
b) Differentiate between SRAM and
DRAM. [4]
c. Explain different types of
relationships that are used in a UML
diagram. [1158]
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2. d. Explain the principle of man in the
middle and session hijacking attack
with appropriate diagrams.
7. Answer the following question.
a) How can you revoke permissions
from a database table? Give SQL
command for it. [1477]
b) What happens when someone tries
to delete an entry of a table that has
referential integrity constraint?
Explain with example. 6
c) Differentiate between “drop table”
and “delete from” SQL statement.
8. Answer the following question.
a) Suppose a variable “v” in a signed 16
bit integer value is O×693C. Evaluate
the following operation. Write the
result in hexadecimal form. i) v<<3
ii) v>>5
b) For two 8-bit binary numbers. what
will be output values in 2’s
complement format:
i) (10000000+10000000) ii)
(11111111-01111111)
c) What is DHCP starvation? Explain
briefly.
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Exam Taker: BPSC; Exam Date: 19.12.2019
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1. a) Write a Java/C++ program to find the
sum of the following series?
1
1!
+
2
2!
+
3
3!
+.......................+
𝑁
𝑁!
.
b) What are the difference between process
and thread?
c) Why JAVA is called platform independent
language?
2. (a) What is method overloading?
b) Implement Array List ◊using following
integer value and show operational method
of the following: 52, 50,27,66,82. 8
i) Insert data into array list
ii) Remove 27 from array list
iii) Insert 99 into 2nd
position
iv) Show array list
3. (a) Write an algorithm to find Palindrome number.
(b) Explain Polymorphism concept of OOP
language.
4. (a) To setup a network among the computers of
your office which type of network and network
features will you prefer? Justify your choice?
(b) Find subnet of 172.16.2.1/22 which will be
applicable for your office room having 50 and 23
pcs. Also find the first and last usable IP
addresses along with broad cast address.
5. (a) Draw a general model of communication
system. Discuss different modes of
communications.
b) How Cellular networks hand off works?
Answer: Handoff: The handoff is the
process of transferring an active call or data
session from one channel to another.
Satellite communications, it is the process of
transferring control from one earth station to
another. Handoff is necessary for preventing
loss of interruption of service to a caller or a
data session user. Handoff is also called
handover.
How Handoff works: Mobile Assisted
Handoff (MAHO) is a technique in which
the mobile devices assist the Base Station
Controller (BSC) to transfer a call to another
BSC. It is used in GSM cellular networks.
Handoff is solely the job of the BSC and the
Mobile Switching Centre (MSC), without
any participation of the mobile device.
However, in GSM, when a mobile station is
not using its time slots for communicating, it
measures signal quality to nearby BSC and
sends this information to the BSC. The BSC
performs handoff according to this
information.
6. a) Differentiate between DNS server and caches.
b) Draw three tier architecture of web
technology,
c) What is loopback address of a computer?
7. a) What do you mean by Normalization in
RDBMS? Explain with an example.
b) Explain JOIN and INNER-JOIN procedure
8. a) What is SMTP? How SMTP works?
b) Explain <div>........ </div>tag of HTML
with an example.
9. a) What are the difference among Hub, Switch
and Routers?
b) Suppose, your office needs to setup a network
which can uses for internet purpose only? What will
be your steps to setup what network in terms of,
i) IP addressing
ii) Device needed
iii) Cabling
10. Write short note on the following topics
i) AI:
ii) loT:
iii) Big data:.
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3. iv) Robotics
Bangladesh Civil Service (BCS) 4oth
Written
Exammination-2020
Question: General Science and Computer and Information
Technology
Part B- Computer and Information Technology
Exam Taker-BPSC Exam Date: 07.01.2020
Total Mark-25[Written]
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BPSC
Assistant Maintenance Engineer
Exam-2020
1. What is Register? Write down the name of 5 CPU
Register?
2. what is cache memory? Difference between main
memory and Cache memory?
3. Describe Read/Write Operation in Optical Disk?
4. What is operating system deadlock? How prevent
deadlock?
5. What is the difference between MAC and IP address?
6. Describe OSI Layer?
7. What are the difference between white box and black
box testing?
8. Propositional Logic and Predicate Logic with
example?
9. What is ER diagram? Explain with Example?
10. what is MVC framework? Benefit of MVC
framework
11. How bubble sort work describe with an example?
12. State 4 characteristics of object oriented
Programming?
13. convert the if-else in switch case?
14. Write down the HTML code to show image and
website URL?
15. Describe De-morgans Law?
16. Write the difference among network switch, Hub
and Router?
17. Explain Bluetooth, Wi-Fi and cellular Network?
18. What are the difference between structure
Programming and object oriented Programming?
BPSC
Multiple Ministry
Assistant Programmer
Exam-2017
1. Differentiate between system software and
application software?
2. Explain the functions of ALU and control Unit of a
computer
3. Explain URL, FTP, ASCII, BIOS
4. Explain how cache memory is used to increase the
processing speed of computer?
5. What do you mean by primary key and foreign key?
6. A block address is granted to a small organization. If
one of the addresses is 205.16.37.39/28, what is the first
and last address of the block?
7. Using examples explain data types used in c
language?
8. Write a program to read the coordinates of the end
points of a line and to find its length?
9. Write a program in c++ to calculate the sum of the
series 1+(1+2)+(1+2+3)+………+(1+2+3….+n).
10. Explain the terms domains, Bandwidth, broadcase
and multicast?
11. Consider a noiseless channel with a bandwidth of
3Khz transmitting a signal with two signal levels. What
is the maximum bit rate?
12. Explain why subnet mask is used?
13. Explain IEEE 802.3 frame format?
14. difference between microprocessor and
microcontroller?
15. Explain the instructions LDS, PUSHF, TEST, CLD
16. Pentuum processor has a superscalar architecture.
Explain the meaning of statement?
17. Explain in details the different forms of looping
statement in c language?
18. Write a program in c with recursive function to
compute the value Xn
where n is a positive interger and
x has real value?
BPSC
ICT Ministry
Assistant Programmer
Exam-2017
1. What is algorithm? Write down the algorithm to find
out the second highest element in an n-element array?
2. What is RDBMS? Why data are stored in database
system instead of file?
3. write down the necessary components of a USB bus
with block diagram?
4. What is artificial Neural network? Based on ANN,
describe input and hidden, weight and activation
function?
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4. 5. What is public key encryption? Explain digital
signature with example?
6. What is Data communication ? Define simplex, half
duplex and full duplex?
7. Explain the functionalities of operating system
8. Convert (2345)10 to hexadecimal and (ABCD)10 to
octal Number?
9. Difference between ROM and RAM?
10. Describe about firewalls, Microcontroller,
COCOMO, Query optimizations, Genetic algorithm and
UML.
11. Expalin: ISO, OSI and TCP/IP model with figure.
12. Define software engineering according to IEEE.
What is SDLC ? Describe any two SDLC?
13. How Alpha-Beta Peruning is better than minimax
search in game planning?
14. Explain data warehouse with figure? Describe fact
table and dimension table with example?
BPSC
Assistant Maintenance Engineer
Exam-2017
1. How many times the loop given below will get
executed?
2. Can the same memory chip be both of ROM and
RAM types? Justify your answer.
3. Suppose you will have to write a class in object
oriented programming language for calculating the area
and circumference of a circle. Write the class definition
with any suitable OOP language.
4. Fill in the gape: the class of an IP address can be
determined by …………. Bits of the ………….. byte of
the IP address.
5. Write short notes on: interrupt pointer table,
database normalization, OSI model
6. Write a C/C++ Program to verify whether an integer
is a prime.
7. Discuss advantage of computer networking
8. Discuss the concept of primary and secondary keys.
9. List CPU scheduling algorithms and their merits and
demerits.
10. suppose you have purchased 200 different items
form a super shop. Write a program to finds the itmes
with the minimum price.
11. Explain the time complexity of an algorithm.
12. Discuss about fragmentation
13. Write a short note on deadlock.
14. discuss page replacement algorithm.
15. List the layers of OSI models and discuss
16. Why do we use indexing in database ? Justify
whether or not indexing helps in query optimization
process.
17. Write SQL Statement to create an index on animal,
group and animal name.
BPSC
Assistant Programmer
Exam-2016
1. Give the full form of CDMA, LCD, DVD, HDTV, HTML,
LED, EDGE, XML, RAID, DAT.
2. Write short note on video RAM, ER model, SDLC model
and sensor based network.
3. Explain nested structure and array of structure with
example.
4. Write the algorithm to convert infix expression to
postfix expression?
5. Explain pass by value and pass by reference in c
language with examples?
6. Write a C program that reads a positive interger,
calculate the factorial number using recursion and print
the result.
7. What is meant by the term peer to peer protocol?
8. Explain how data is transmitted along fiber optic calbe
9. What is MAC address?
10. What are the difference between DOMAIN and
Workstation?
11. What is the file transfer Protocol
12. What is ananonymous FTP site? Why is it used?
13. consider the following set of processes, with the
length of the cpu burst time givennin milliseconds
Process Burst time Priority
P1 10 3
P2 1 1
P3 2 3
P4 1 4
P5 5 2
a. Draw the gantt chart illustrating the execution
of these processes using FCFS, SJF and RR
(Quantum=1) scheduling.
b. What is the turnaround time for each process
for FCFS and SJF scheduling algorithm?
14. What is race condition ? give an example?
BPSC
Department of ICT
Assistant Maintenance Engineer
Exam-2014
1. What is the difference between layer2 and layer 3
network switch?
2. What is data transmission method? Distinguish
between simplex , half duplex and full duplex?
3. What is Private IP Address? Mention the class B private
ip range.
4. state the advantage and disadvantage of voice band
and broadband?
5. What is database? State the RDBMS With examples?
6. Explain the one to many relationships with ER
diagram?
7. What is the difference between while and do while
loop?
8. Write a c/c++ Program to calculate factorial of any
integer?
9. What are properties of weak password?
10. Define worms and Trojan horse?
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5. 11. What is the difference between RAID level 2 and RAID
level 3.
12. Explain GSM mobile network?
13. A disk pack has 19 surfaces and storage area on each
surface has an outer diameter of 33cm and inner
diameter of 22cm. the maximum recording storage
density on any track in 200 bots/cm and minimum
spacing between tracks is 0.25 mm, then how to calculate
the capacity of disk pack?
14. What are the advantages of microcontroller over
microprocessor?
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