RRB JE Stage 2 Computer and Applications Questions part 3 Previous year questions with answers and explanation.

1. PREVIOUS YEARS QUESTIONS WITH
ANSWER AND EXPLANATION
Part - 3
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1

2. 2
Answer: (b)

3. 3
Hypertext Markup Language (HTML) is the standard markup language for
documents designed to be displayed in a web browser. It can be assisted by
technologies such as Cascading Style Sheets (CSS) and scripting languages
such as JavaScript.
XML stands for eXtensible Markup Language. XML is a markup language
much like HTML. XML was designed to store and transport data.
Answer: (c)

4. 4
Answer: (d)

5. 5
PROM (Programmable Read-Only Memory) is a computer memory chip that can be
programmed once after it is created.
Once the PROM is programmed, the information written is permanent and cannot be erased or
deleted.
An EPROM (Erasable programmable read-only memory) is a type of PROM chip that
retains its data when its power supply is switched off. Computer memory that can retrieve
stored data after a power supply has been turned off and back on is called non-volatile.
EEPROM (Electrically Erasable Programmable Read-Only Memory) is a type of non-
volatile memory used in computers, integrated in microcontrollers for smart cards and remote
keyless systems, and other electronic devices to store relatively small amounts of data but
allowing individual bytes to be erased and reprogrammed.
Answer: (d)

6. 6
Directing  Control Unit  Brain of the Computer
Answer: (b)

7. 7
The binary coding schemes that are most commonly used are as follows:
1. Binary coded decimal (BCD).
2. American standard code for information interchange
(ASCII).
3. Extended binary coded decimal interchange code
(EBCDIC).
4. UNICODE.
Answer: (a)

8. 8
Answer: (c)

9. 9
Answer: (c)

10. 10
Answer: (c)

11. 11
Answer: (d)

12. 12
Answer: (b)

13. 13
Hypertext Markup Language (HTML) is the standard
markup language for documents designed to be displayed
in a web browser. It can be assisted by technologies such
as Cascading Style Sheets (CSS) and scripting languages
such as JavaScript.
Answer: (c)

14. 14
Answer: (a)

15. 15
PROM (Programmable Read-Only Memory) is a computer memory chip that can be
programmed once after it is created.
Once the PROM is programmed, the information written is permanent and cannot be erased or
deleted.
An EPROM (Erasable programmable read-only memory) is a type of PROM chip that
retains its data when its power supply is switched off. Computer memory that can retrieve
stored data after a power supply has been turned off and back on is called non-volatile.
EEPROM (Electrically Erasable Programmable Read-Only Memory) is a type of non-
volatile memory used in computers, integrated in microcontrollers for smart cards and remote
keyless systems, and other electronic devices to store relatively small amounts of data but
allowing individual bytes to be erased and reprogrammed.
Answer: (d)

16. 16
Connection lines used to connect the internal parts of the microprocessor chip is called bus. There
are three types of buses in a microprocessor:
Data Bus − Lines that carry data to and from memory are called data bus. It is a bidirectional bus
with width equal to word length of the microprocessor.
Address Bus − It is a unidirectional responsible for carrying address of a memory location or I/O
port from CPU to memory or I/O port.
Control Bus − Lines that carry control signals like clock signals, interrupt signal or ready
signal are called control bus. They are bidirectional. Signal that denotes that a device is ready for
processing is called ready signal. Signal that indicates to a device to interrupt its process is called
an interrupt signal.
Answer: (d)

17. 17
The binary coding schemes that are most commonly used are as follows:
1. Binary coded decimal (BCD).
2. American standard code for information interchange
(ASCII).
3. Extended binary coded decimal interchange code
(EBCDIC).
4. UNICODE.
Answer: (c)

18. 18
Answer: (a)

19. 19
Answer: (b)

20. 20
Answer: (c)

21. 21
• In computers, the case sensitivity of text defines whether uppercase and
lowercase letters are treated as distinct or equivalent.
• The concept can also be applied to the processes using the data, such as searches
and comparisons.
Answer: (a)

22. 22
Answer: (a)

23. 23
Email
• Invented by Ray Tomlinson.
• Email is the electronic version of sending and receiving letter.
• Electronic mail allow us to send and receive messages in electronic form.
• Email is transmitted between computer system according to certain internet
protocols or rules for exchanging E-mail.
• A user must have email address to Use email, which consists of two parts
separated by @ symbol.
• Spaces are not allowed within email address.
• vrrsekar@yahoo.com
• username - host name( Domain name)
Answer: (d)

24. 24

25. 25
SMTP – Simple Mail Transfer Protocol
POP – Post office Protocol
IMAP – Internet Message Access Protocol
HTTP – Hyper Text Transfer Protocol

26. IMAP (Internet Message Access Protocol)
 Is a standard protocol for accessing e-mail from your local server.
 IMAP is a client/server protocol in which e-mail is received and held for you by your Internet
server.
 As this requires only a small data transfer this works well even over a slow connection such as a
modem.
 Only if you request to read a specific email message will it be downloaded from the server.
 You can also create and manipulate folders or mailboxes on the server, delete messages etc.
 The POP (Post Office Protocol 3) protocol provides a simple, standardized way for users to
access mailboxes and download messages to their computers.
The SMTP (Simple Mail Transfer Protocol) protocol
 is used by the Mail Transfer Agent (MTA) to deliver your eMail to the recipient's mail server.
 The SMTP protocol can only be used to send emails, not to receive them.
 Depending on your network / ISP settings, you may only be able to use the SMTP protocol under
certain conditions
 The HTTP protocol is not a protocol dedicated for email communications, but it can be used for
accessing your mailbox.
 Also called web based email, this protocol can be used to compose or retrieve emails from an your
account.
 Hotmail is a good example of using HTTP as an email protocol. 26

27. 27
Answer: (a)

28. 28
• Cache Memory is a special very high-speed memory.
• It is used to speed up and synchronizing with high-speed CPU.
• Cache memory is costlier than main memory or disk memory but economical than CPU registers.
• Cache memory is an extremely fast memory type that acts as a buffer between RAM and the
CPU.
• It holds frequently requested data and instructions so that they are immediately available to the
CPU when needed.
• Cache memory is used to reduce the average time to access data from the Main memory.
• The cache is a smaller and faster memory which stores copies of the data from frequently used
main memory locations.
• There are various different independent caches in a CPU, which stored instruction and data.
Answer: (d)

29. 29
Answer: (b)

30. 30
• Extended binary coded decimal interchange code (EBCDIC).
In EBCDIC, characters are represented by eight bits.
• These codes store information which is readable by other computers.
• It allows 2^8 =256 combinations of bits.
Answer: (b)

31. 31
Convert Decimal  Binary
Binary  Hexadecimal
Answer: (a)

32. 32
Answer: (c)

33. 33
Answer: (c)

34. 34
Answer: (d)

35. 35
Will continue in part 4