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Syllabus

NEC Electronics · Practice

Chapters & sets

1. Basic Electrical and Electronics Engineering

Basic Electrical

Set 1106

Basic Electronics

Set 171 Set 233

2. Digital Logic and Microprocessor

Digital Logic

Set 150 Set 250 Set 350 Set 450 Set 550 Set 650 Set 749 Set 851 Set 950 Set 1050 Set 1150 Set 1232

Microprocessor

Set 150 Set 250 Set 350 Set 445 Set 550 Set 650 Set 720 Set 850 Set 969

3. Programming Language and Its Applications

Mixed chapter MCQs

Set 150 Set 249 Set 349 Set 451 Set 540

4. Computer Organization and Embedded Systems

Mixed chapter MCQs

Set 150 Set 249 Set 350 Set 450 Set 550 Set 650 Set 750 Set 849 Set 950 Set 1050 Set 1150

5. Computer Networks and Network Security

Basic Networking

Set 150 Set 253

Advanced Networking

Set 150 Set 250 Set 350 Set 450 Set 550 Set 655

10. Project Planning, Design and Implementation

Basic Networking Set 1

50 questions

Question 1

______ is not true in case of OSI and TCP/IP model.

A.
The OSI Model is a logical and conceptual model that defines how communication needs to be done
B.
TCP/IP model depends on standard protocols that assigns the network of hosts over the Internet.
C.
Both OSI and TCP/IP models are protocol independent
D.
None of these

Question 2

A computer has just been installed on the Ethernet LAN but it is not communicating with the network, then what should be done at first?

A.
Update the NIC driver
B.
Verify the IP address configuration on the workstation
C.
Verify the connectivity on the computer’s network card
D.
All of the above

Question 3

Which of the following commands is not used in the troubleshooting of computer networks?

A.
Ping
B.
Tracert
C.
Ipconfig
D.
Chkdsk

Question 4

In network troubleshooting, which of the following commands is used?

A.
Netstat
B.
Nslookup
C.
Tracert
D.
All of the above

Question 5

Which server maintains a directory of domain names and translate them to Internet Protocol (IP) addresses.

A.
DNS Server
B.
DHCP Server
C.
Web Server
D.
Database Server

Question 6

Which data link sub-layer carries out data link functions that depend upon the type of medium?

A.
Logical link control
B.
Media access control
C.
Network interface control
D.
Error Control

Question 7

When connected to the Internet, the device used to perform modulation and demodulation is called

A.
Trans receiver
B.
Modem
C.
Repeater
D.
All of the above

Question 8

An web-site is a collection of

A.
Components of internet
B.
Web-pages
C.
Web links
D.
All of the above

Question 9

In web applications, ______ is the correct order to form URLs.

A.
Protocol name, File name, DNS name
B.
DNS name, Protocol name, File name
C.
Protocol name, DNS name, File name
D.
Protocol name, File name, DNS name

Question 10

In computer networking, MAN lies in between LAN and WAN in terms of

A.
Area coverage
B.
Data transfer rate
C.
Both of the above
D.
None of these

Question 11

Which type of network is an Internet?

A.
LAN
B.
MAN
C.
WAN
D.
All of the above

Question 12

The most commonly used network media for small local area network is ______.

A.
Twisted pair cable
B.
Co-axial cable
C.
Optical fiber
D.
All of the above

Question 13

In computer networking, a Network Interface Card (NIC) has

A.
MAC address
B.
IP address
C.
Subnet mask
D.
All of the above

Question 14

Which statement is true in case of IP address?

A.
Every computer connected to the network must have an IP address to communicate.
B.
Every computer connected to the Internet must have an IP address to communicate.
C.
Both of the above
D.
None of these

Question 15

Which of the following statement is false in case of IP

A.
IP is an Internet path
B.
Every computer must have an IP address
C.
IP is a unique address of a computer connected to the network
D.
Both A and B

Question 16

In computer networking, the commonly used topology for LAN is ______.

A.
Star topology
B.
Ring topology
C.
Bus topology
D.
Tree topology

Question 17

In network security, which statement is true in case of IPS?

A.
IPS is a network security technology that examines network traffic flows to detect and prevent vulnerability exploits.
B.
If an attack is detected, IPS can stop the malicious traffic before it makes it to rest of the network.
C.
Both of the above
D.
None of these

Question 18

In network security, which statement is false in case of IPS and IDS?

A.
IDS is a device or software application that monitors a network or systems for malicious activity or policy violations.
B.
IPS controls access to IT networks in order to protect systems from attack and abuse.
C.
IDS are designed to identify suspicious attacks and to take the corrective action to block them.
D.
If an attack is detected, IPS can stop the malicious traffic before it makes it to rest of the network.

Question 19

Which statement is false in case of peer-to-peer network?

A.
In peer-to-peer networks all nodes are act as server as well as client.
B.
Peer-to-peer network is easier to setup.
C.
Peer-to-peer network is more expensive than client server network.
D.
Each workstation on the network shares its files equally with the others.

Question 20

In computer networking, most reliable network topology.

A.
Bus topology
B.
Mesh topology
C.
Tree topology
D.
None of these

Question 21

Which networking device can perform Network Address Translation (NAT)?

A.
Bridge
B.
Switch
C.
Router
D.
All of the above

Question 22

What is Data Encryption Standards (DES) used in network security?

A.
It is symmetric key cryptography
B.
It uses only one key for encryption and decryption
C.
It is asymmetric key cryptography
D.
Both A and B

Question 23

Which of the following statement is true in case of IP address and MAC address?

A.
Every network device must have IP address and MAC address to communicate.
B.
IP address is logical address and MAC address is physical address.
C.
IP address can be changed but MAC address can never be changed.
D.
All of the above

Question 24

What type of communication media is used to develop internet backbone for a bigger and wider Information Highway in the country?

A.
Wireless microwave link
B.
Co-axial cable
C.
Optical fiber
D.
All of the above

Question 25

In OSI reference mode, which layer takes care that the data is sent in such a way that the receiver will understand the data or information and will be able to use the data?

A.
Transport layer
B.
Session layer
C.
Presentation layer
D.
Application layer

Question 26

Which protocol is preferred for the streaming applications that require constant data flow, bulk data and fastness than reliability?

A.
TCP
B.
UDP
C.
FTP
D.
ARP

Question 27

In HTTPS, the communication protocol is encrypted using......

A.
Application layer security
B.
Transport layer security
C.
Network layer security
D.
None of these

Question 28

A malware which attempts to obtain sensitive information for malicious reasons, by disguising as a trustworthy entity is called......

A.
Trojan horse
B.
Phishing
C.
Logic bomb
D.
All of the above

Question 29

Which of the following malware do not reproduce or replicate itself but is still destructive?

A.
Virus
B.
Trojan
C.
Worm
D.
Both B and C

Question 30

A network security device that monitors incoming and outgoing network traffic and permits or blocks data packets based on a set of security rules is called

A.
Router
B.
Switch
C.
Firewall
D.
None of these

Question 31

In computer networks, ______ is categorized in the computer related threats.

A.
Phishing
B.
Spyware
C.
Trojan horse
D.
All of the above

Question 32

A universe of network-accessible information where web resources are identified by URLs and accessible via the Internet is called______.

A.
Local Area Network (LAN)
B.
Wide Area Network (WAN)
C.
World Wide Web (WWW)
D.
Storage Area Network (SAN)

Question 33

In computer networking, ______ is not any network type.

A.
Metropolitan Area Network
B.
Public Area Network
C.
Wireless Local Area Network
D.
Personal Area Network

Question 34

A private enterprise network which is designed to support an organization’s employees to communicate, collaborate and perform their roles in a secure manner is called......

A.
Email
B.
Internet
C.
Extranet
D.
Intranet

Question 35

Which computer related threat attempts to obtain sensitive information by disguising as a trustworthy entity?

A.
Virus
B.
Trojan
C.
Worms
D.
Phishing

Question 36

In network communication, which medium has the highest data transmission speed?

A.
Optical Fiber
B.
Satellite
C.
Coaxial Cable
D.
Microwave Link

Question 37

Which statement is false in case of Digital Signature?

A.
A digital signature is a mathematical algorithm routinely used to validate the authenticity and integrity of a message, software or digital document.
B.
Digital signature provides far more inherent security than handwritten signature.
C.
Just like a handwritten signature, a digital signature is unique for every document.
D.
None of these

Question 38

In web applications, which security is applied in HTTPS?

A.
Application layer security
B.
Transport layer security
C.
Network layer security
D.
None of these

Question 39

In Nepal, the prevailing law which deals with the issues relating to cybercrime is......

A.
Electronic Transaction Act, 2063
B.
Criminal Act, 2074
C.
Copyright Act, 2059
D.
Right to-Information Act, 2064

Question 40

In OSI reference mode, which layer takes care that the data is sent in such a way that the receiver will understand the data or information and will be able to use the data?

A.
Transport layer
B.
Session layer
C.
Presentation layer
D.
Application layer

Question 41

An ______ is a network security tool that continuously monitors a network for harmful activity and takes corrective action to block it.

A.
Intrusion Detection System (IDS)
B.
Intrusion Prevention System (IPS)
C.
Both of the above
D.
None of these

Question 42

Which of the following statements is false in case of Denial of Services (DoS) and Distributed Denial of Services (DDoS) attacks?

A.
Both attacks overload a server, rendering a website or resource inaccessible to the intended users.
B.
DDoS attack is a DoS attack that floods a targeted resource with several computers or machines.
C.
DoS attack is faster as compared to DDoS.
D.
None of these

Question 43

Which statement is false in case of Digital Signature?

A.
A digital signature is a mathematical algorithm routinely used to validate the authenticity and integrity of a message, software or digital document.
B.
Digital signature provides far more inherent security than handwritten signature.
C.
Digital signature, like handwritten signature, becomes unique for each document.
D.
None of these

Question 44

___ command can be used to check network connectivity between the host and the server/host when troubleshooting computer networks?

A.
IPCONFIG
B.
PING
C.
TRACERT
D.
Both B and C

Question 45

An ___ is a private network that provides controlled access to authorized customers, vendors, partners, or others outside the company.

A.
Internet
B.
Intranet
C.
Extranet
D.
All of the above

Question 46

A network in which two or more PCs are linked together to share files and get access to common devices like printers, scanners is called

A.
Client – Server Network
B.
Peer to Peer Network
C.
Both of the above
D.
None of these

Question 47

Which of the following is not a network device?

A.
Hub
B.
Bridge
C.
Router
D.
Tape Drive

Question 48

A type of malicious code .which disguises itself as a desirable code or software but can take control of your computer is

A.
Virus
B.
Worms
C.
Trojan
D.
Phishing

Question 49

A piece of code intentionally inserted into a software system that will cause malicious function when specified conditions are met is called

A.
Worm
B.
Torjan horse
C.
Logic bomb
D.
None of these

Question 50

___is not a valid subnet mask in computer networking.

A.
255.0.255.0
B.
255.255.255.248
C.
255.255.248.0
D.
255.0.0.0

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