Computer Questions for NABARD Grade-A 2017

Computer efficiency is now important in almost every stream and computer awareness is an important section in bank recruitment Examination. Practice with these 15 questions of Computer Knowledge for NABARD Grade-A Exam 2017.

Q1. Which operation performs a set union of two ‘similarly structured’ tables?
(a) Union
(b) Join
(c) Product
(d) Intersect
(e) None of these

Q2. What is a tuple?
(a) Row
(b) Projection
(c) Field
(d) Union
(e) None of these

Q3. In relational database, a field is a:
(a) label
(b) table of information
(c) group of related tables
(d) category of information
(e) None of these

Q4. Which one of the following is a set of one or more attributes taken collectively to uniquely identify a record?
(a) Candidate key
(b) Sub key
(c) Super key
(d) Foreign key
(e) None of these

Q5. Which among the following is a property of the entire relation, rather than of the individual tuples in which each tuple is unique?
(a) Rows
(b) Key
(c) Attribute
(d) Fields
(e) None of these

Q6. __________ ensures secure transfer of data over an unsecured network, such as the Internet.
(a) Antivirus
(b) Hacking
(c) Cracking
(d) Spoofing
(e) Cryptography

Q7. The SubSeven is an example of :
(a) antivirus
(b) Spyware
(c) Spam
(d) Adware
(e) Trojan horse

Q8. Which among the following is the most suitable type of network spread over large span that phone lines would use?
(a) WAN
(b) PAN
(c) WWAN
(d) CAN
(e) SAN

Q9. What does JAR stand for?
(a) JQuerry Application Rapid-development
(b) Java Application Resolution
(c) Java Archive
(d) JQuerry Application Resolution
(e) None of the above

Q10. Bridge is a _________ device.   
(a) layer 4
(b) layer 2
(c) layer 5
(d) layer 7
(e) layer 3

Q11. Which of the following cable types is called cheapernet?  
(a) Thicknet
(b) UTP
(c) SMF
(d) Thinnet
(e) STP

Q12. 10BaseT uses which type of cables to connect network devices?  
(a) twisted-pair
(b) coaxial
(c) multi-mode fiber optic
(d) single-mode fiber optic
(e) Both (a) and (c)

Q13. Which of the following is not an advantage of wireless networking?  
(a) Mobility
(b) Installation
(c) Cost effectiveness
(d) Security
(e) Both (b) and (c)

Q14. Which of the following topologies does not use switches?  
(a) Bus
(b) Star
(c) Ring
(d) Mesh
(e) Hybrid

Q15. Which layer provides electrical and mechanical requirements to maintain a physical link between the end points?  
(a) Network
(b) Physical
(c) Application
(d) Data Link
(e) All of these