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Simulation of Communication Systems and Networks MCQ

1. What is wireless?

A device that allows you to connect to the internet without using cables

A way to connect to the internet using a mobile phone

A form of node connectivity that replaces cables with radio waves or invisible wavelengths of light.

A type of computer virus

Answer

Correct Answer: A form of node connectivity that replaces cables with radio waves or invisible wavelengths of light.

Note: This Question is unanswered, help us to find answer for this one

2. What does wireless node connectivity replace cables with?

WiFi

Radio waves or invisible wavelengths of light

Cellular data

Bluetooth

Answer

Correct Answer: Radio waves or invisible wavelengths of light

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3. What is the full form of WLAN?

Wireless Large Area Network

Wide Local Area Network

Wireless Link Area Network

Wireless Local Area Network

Answer

Correct Answer: Wireless Local Area Network

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4. What is the full form of WLANs?

Wireless Local Area Networks

Wireless Large Area Networks

Wide Local Area Networks

Wireless Loose Area Networks

Answer

Correct Answer: Wireless Local Area Networks

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5. What is the term used by the Wi-Fi Alliance to refer to the technology that the IEEE calls 802.11?

Institute of Electrical and Electronics Engineers

Wi-Fi

Wireless Fidelity

Local Area Networking

Answer

Correct Answer: Wi-Fi

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6. What is a Wide Area Network?

A network that is leased from a service provider.

A network that uses a class of Layer-2 protocols positioned for deployment on a WAN.

A network that geographically spans a large area, such as between cities or around the world.

Answer

Correct Answer: A network that geographically spans a large area, such as between cities or around the world.

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7. Wavelength is inversely proportional to which of the following?

Seconds

Space

Frequency

Time

Answer

Correct Answer: Frequency

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8. Which of the following protocols is used to create a secure channel for all traffic to traverse in a VPN?

IPsec

ATM

Ethernet

Frame Relay

Answer

Correct Answer: IPsec

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9. What is the full form of VoIP?

Voice over Internet Protocol

Volatile Organic Compound

Virus over Internet Protocol

Volatile Internet Protocol

Answer

Correct Answer: Voice over Internet Protocol

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10. What enables two or more IP hosts to digitize and packetize analog voice signals and transmit them to one another?

Analog Voice Signals

Voice over Internet Protocol (VoIP)

Call setup protocols

Gateway controller (a server)

Answer

Correct Answer: Voice over Internet Protocol (VoIP)

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11. What do you need in order to allow communication from one broadcast domain to another?

A Virtual Private Network

A Router

A Layer-2 switch

A Firewall

Answer

Correct Answer: A Router

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12. VLANs are created on which type of device?

Router

Layer-2 switch

Layer-3 switch

Firewall

Answer

Correct Answer: Layer-2 switch

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13. A UPS system is designed to keep which of the following operational during a power outage?

One or a few computing devices

A UPS device is not intended for long-term continuity of operation.

All computing devices

For that, a fueled generator is a better choice.

Answer

Correct Answer: One or a few computing devices

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14. How is a UPS device different from a generator?

A UPS device is small to midsize, while a generator is not.

A UPS device is intended for one or a few computing devices, while a generator is not.

A UPS device is used to keep computing devices operational during a power outage, while a generator is not.

A UPS device is not intended for long-term continuity of operation, while a generator is.

Answer

Correct Answer: A UPS device is not intended for long-term continuity of operation, while a generator is.

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15. What does UC stand for?

Unreliable Communications

Ultraviolet Communications

Unified Communications

Unified Companies

Answer

Correct Answer: Unified Communications

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16. What Layer-4 transport protocol is UDP?

HTTP

TCP

UDP

Answer

Correct Answer: UDP

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17. What is the other Layer-4 transport protocol in the TCP/IP suite?

SSL

FTP

TCP

HTTP

Answer

Correct Answer: TCP

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18. What is the primary form of copper cable used in modern star-wired networks?

Shielded twisted-pair cable

Coaxial cable

Twisted-pair cable

Fiber-optic cable

Answer

Correct Answer: Twisted-pair cable

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19. How does a Resistive touchscreen work?

Capacitive touchscreens work with the touch of the pad of a finger

Touchscreen technology has been around since the 19th century

Resistive touchscreens require pressure to push an outer membrane against an inner one.

Answer

Correct Answer: Resistive touchscreens require pressure to push an outer membrane against an inner one.

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20. What is the definition of topology?

The study of trigonometry

The study of algebra

The study of geometry

The physical or logical layout of a network.

Answer

Correct Answer: The physical or logical layout of a network.

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21. What is the primary function of a transceiver?

Regulates the speed of digital signal transmission.

Transmits outbound traffic to and receives inbound traffic from a network.

Stores digital signals.

Answer

Correct Answer: Transmits outbound traffic to and receives inbound traffic from a network.

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22. What is the difference between TCP/IP and OSI Model?

TCP/IP does not have a physical layer while OSI Model does.

TCP/IP does not have a data link layer while OSI Model does.

TCP/IP has four layers while OSI Model has seven layers.

TCP/IP and OSI Model have the same number of layers.

Answer

Correct Answer: TCP/IP has four layers while OSI Model has seven layers.

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23. How many layers are in the TCP/IP model?

Answer

Correct Answer: 4

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24. Which is not a component of the TCP/IP protocol suite?

NWLink

SPX

NetBEUI

TCP

Answer

Correct Answer: TCP

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25. Which of the following is true about TCP/IP?

The TCP/IP is the protocol suite used on the internet.

TCP/IP is a single protocol.

TCP/IP is an outdated protocol suite.

TCP is responsible for data delivery while IP is responsible for routing.

Answer

Correct Answer: The TCP/IP is the protocol suite used on the internet.

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26. What layer of the TCP/IP protocol suite is TCP responsible for?

Layer-1

Layer-3

Layer-2

Layer-4

Answer

Correct Answer: Layer-4

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27. What is the primary Layer-4 protocol in the TCP/IP protocol suite?

Internet Protocol

Simple Mail Transfer Protocol

Hypertext Transfer Protocol

Transmission Control Protocol

Answer

Correct Answer: Transmission Control Protocol

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28. How many channels does a T1 circuit have?

Answer

Correct Answer: 24

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29. What is the maximum bitrate of a T1 signal?

6.312Mbps

3.072Mbps

1.544Mbps

2.048Mbps

Answer

Correct Answer: 1.544Mbps

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30. Switches are not authorized to discard unknown traffic and must therefore do what?

Flood it

Forward it

Send it back

Block it

Answer

Correct Answer: Flood it

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31. What is subnetting?

The act of assigning different IP address spaces to different devices on the same network

A way of increasing the size of an IP address space

The act of splitting a larger IP address space into smaller broadcast domains known as subnetworks or subnets

The act of joining multiple small IP address spaces into one large broadcast domain

Answer

Correct Answer: The act of splitting a larger IP address space into smaller broadcast domains known as subnetworks or subnets

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32. What is the purpose of a print spooler?

To print the jobs in the order they are received

To store content to be printed in a buffer

To process the print job as soon as it is received

To keep the host from continuing with other processing until the printer is ready

Answer

Correct Answer: To store content to be printed in a buffer

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33. What is the full form of STP?

Short-Term Protection

Simple Tree Protocol

Spanning Tree Protocol

Answer

Correct Answer: Spanning Tree Protocol

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34. Software is digital content that:

Is currently in a storage location or that can be referred to in the abstract.

Only refers to the hardware device

Is not currently in a storage location or cannot be referred to in the abstract.

Only refers to the software code

Answer

Correct Answer: Is currently in a storage location or that can be referred to in the abstract.

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35. What is SSO?

Standard Socket Option

Secure Socket Option

Single Sign- On

Social Security Online

Answer

Correct Answer: Single Sign- On

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36. What does Single Sign-On (SSO) stand for?

A way of reducing the number of passwords a user needs to remember

A method of securely storing passwords

An authentication model in which only one set of login credentials is required to gain access to many systems.

A set of credentials that allows access to multiple systems

Answer

Correct Answer: An authentication model in which only one set of login credentials is required to gain access to many systems.

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37. In client/server architecture, what are servers often specialized devices with?

Multiple video cards

High-powered CPUs

Specialized operating systems installed

Large storage devices

Answer

Correct Answer: Specialized operating systems installed

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38. What is a server?

A device that stores data

A device that shares data

A device that processes data

A device that shares a resource with a client.

Answer

Correct Answer: A device that shares a resource with a client.

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39. What is a 'default gateway'?

An interface to enter the network

The IP address of the next device to pass the packet to

A metric to act as a final tie-breaker should there be two entries that match the intended destination

An interface to exit through to get to the destination or to the next router in the path

Answer

Correct Answer: An interface to exit through to get to the destination or to the next router in the path

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40. What is the minimum information required in a routing table entry?

The IP header

The destination to be reached

The subnet mask

The destination to be reached, and a subnet mask.

Answer

Correct Answer: The destination to be reached, and a subnet mask.

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41. Which of the following is not a routing protocol?

EIGRP

OSPF

Static routes

IS-IS

Answer

Correct Answer: Static routes

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42. What is a routing protocol?

A protocol that helps to build a routing table.

A device that connects a network to the Internet.

A hardware device that allows two or more computers to communicate with each other.

A software program that manages network traffic.

Answer

Correct Answer: A protocol that helps to build a routing table.

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43. What does the term "reboot" mean?

Shutting down a device

Restarting a device

Booting a device while it is already running

Pulling yourself up by your bootstraps

Answer

Correct Answer: Restarting a device

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44. What is the main purpose of RAID?

To connect to multiple disk drives and combine their aggregate storage capacity into a single logical volume

To increase storage capacity, performance, or fault tolerance.

To store data

To decrease storage capacity, performance, or fault tolerance

Answer

Correct Answer: To increase storage capacity, performance, or fault tolerance.

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45. RAID provides which of the following?

Performance improvement

Capacity improvement

Fault tolerance, capacity improvement, and performance improvement

Fault tolerance

Answer

Correct Answer: Fault tolerance, capacity improvement, and performance improvement

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46. What is the use of a related public and private pair of cryptographic keys for authentication, confidentiality, or both called?

Private key cryptography

Public key cryptography

Symmetric-key cryptography

Hybrid cryptography

Answer

Correct Answer: Public key cryptography

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47. What is the use of a public and private pair of cryptographic keys?

For data compression

For authentication, confidentiality, or both.

For encryption

For decryption

Answer

Correct Answer: For authentication, confidentiality, or both.

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