Wireless Networks: A Comprehensive Guide for Master's Students

Question 1

The primary objective of carrier aggregation in cellular networks is to:

Accepted Answer

Increase network capacity

Answer

Reduce network latency

Answer

Enhance signal coverage

Answer

Improve network security

Question 2

Wi-Fi networks primarily employ which security protocol?

Accepted Answer

WPA2

Answer

SSL

Answer

IPsec

Answer

VPN

Question 3

Which of the following is not an advantage of Bluetooth technology?

Accepted Answer

High bandwidth support

Answer

Energy efficiency

Answer

Short-range communication

Answer

Device discovery capabilities

Question 4

In cellular networks, what is the key distinction between TDMA and FDMA?

Accepted Answer

TDMA allocates time slots, while FDMA allocates frequencies

Answer

FDMA allocates time slots, while TDMA allocates frequencies

Answer

Both TDMA and FDMA allocate both time slots and frequencies

Answer

Neither TDMA nor FDMA allocates time slots or frequencies

Question 5

In wireless networks, the primary function of a MAC address is:

Accepted Answer

Device identification

Answer

Data packet routing

Answer

Data encryption

Answer

Network traffic regulation

Question 6

Which of the following is a type of wireless sensor network?

Accepted Answer

PAN

Answer

LAN

Answer

WAN

Answer

MAN

Question 7

An access point in a wireless network serves the primary purpose of:

Accepted Answer

Bridging wireless devices to the wired network

Answer

Providing network security

Answer

Extending the network's reach

Answer

Managing network traffic

Question 8

Compared to wired networks, which limitation is inherent to Wi-Fi networks?

Accepted Answer

Lower bandwidth capacity

Answer

Higher immunity to interference

Answer

Reduced latency and jitter

Answer

Unlimited range and coverage area

Question 9

Which of the following is a defining characteristic of Wi-Fi technology?

Accepted Answer

Operates in the unlicensed radio spectrum

Answer

Offers high bandwidth and low latency

Answer

Employs a mesh networking topology

Answer

Requires a direct line-of-sight for connectivity

Question 10

Which cellular technology generation provides the highest data rates and the lowest latency?

Accepted Answer

5G

Answer

2G

Answer

3G

Answer

4G

Question 11

What is the primary purpose of a MAC address in a wireless network?

Accepted Answer

To uniquely identify and address wireless devices

Answer

To encrypt and decrypt data transmissions

Answer

To manage channel allocation and access control

Answer

To provide firewall and intrusion detection capabilities

Question 12

Which technique is commonly employed to enhance wireless network performance in congested environments?

Accepted Answer

Orthogonal Frequency-Division Multiplexing (OFDM)

Answer

Frequency Hopping Spread Spectrum (FHSS)

Answer

Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA)

Answer

Time Division Multiple Access (TDMA)

Question 13

What is the primary function of a wireless access point (WAP)?

Accepted Answer

To establish a connection between wireless devices and a wired network

Answer

To provide authentication and authorization services for network access

Answer

To transmit and receive radio signals for wireless communication

Answer

To manage network traffic and perform routing functions

Question 14

What is the fundamental difference between a closed-loop and an open-loop antenna system?

Accepted Answer

Incorporation of feedback mechanisms and response capabilities

Answer

Gain and directivity

Answer

Power consumption and energy efficiency

Answer

Frequency range and modulation techniques employed

Question 15

What is the primary objective of implementing Quality of Service (QoS) mechanisms in wireless networks?

Accepted Answer

To prioritize and manage network traffic effectively

Answer

To encrypt and decrypt data transmissions for enhanced security

Answer

To detect and mitigate potential security threats and attacks

Answer

To configure and provision wireless devices and network components

Question 16

Rewritten: Wi-Fi networks primarily utilize which frequency range?

Accepted Answer

2.4 GHz and 5 GHz

Answer

10 GHz and 60 GHz

Answer

2.4 GHz and 10 GHz

Answer

5 GHz and 60 GHz

Question 17

Rewritten: In a wireless network, the access point's primary function is:

Accepted Answer

Providing wireless connectivity to devices

Answer

Connecting devices to the wired network

Answer

Managing network traffic and security

Answer

Enforcing network security policies

Question 18

Rewritten: Bluetooth technology is characterized by:

Accepted Answer

Short-range wireless connectivity

Answer

High bandwidth and long range

Answer

Cellular network compatibility

Answer

Wide-area coverage

Question 19

Rewritten: The fundamental difference between GSM and CDMA cellular networks lies in:

Accepted Answer

Frequency division multiplexing vs. code division multiplexing

Answer

Data rates and coverage area

Answer

Security protocols and frequency bands

Answer

Network architecture and roaming capabilities

Question 20

Rewritten: Bluetooth's primary advantage over Wi-Fi for short-range wireless communication is:

Accepted Answer

Lower power consumption and cost

Answer

Higher data rates and reliability

Answer

Greater range and security

Answer

Enhanced interoperability and compatibility

Question 21

Rewritten: In a wireless network, the primary purpose of a MAC address is to:

Accepted Answer

Uniquely identify devices on the network

Answer

Assign IP addresses and control access

Answer

Provide encryption and ensure security

Answer

Manage network traffic and optimize performance

Question 22

What is the primary purpose of a Service Set Identifier (SSID) in a wireless network?

Accepted Answer

Allow devices to connect to the network

Answer

Hide the network from unauthorized users

Answer

Identify the type of wireless network

Answer

Provide access to shared network resources

Question 23

Which organization is responsible for developing and maintaining the Wi-Fi standards?

Accepted Answer

IEEE

Answer

ITU

Answer

FCC

Answer

ANSI

Question 24

What is the main functional difference between a wireless access point (WAP) and a wireless router?

Accepted Answer

WAPs only provide wireless connectivity, while routers provide both wired and wireless connections

Answer

WAPs have a wider coverage range than routers

Answer

Routers are inherently more secure than WAPs

Answer

WAPs are less expensive than routers

Question 25

In wireless networks, which protocol employs a four-step handshake to establish a secure connection?

Accepted Answer

WPA

Answer

WEP

Answer

Bluetooth

Answer

Zigbee

Question 26

Which of the following is considered a major advantage of wireless networks?

Accepted Answer

Increased mobility and flexibility

Answer

Lower cost and simplified installation

Answer

Higher bandwidth and faster throughput

Answer

Improved security and privacy protection

Question 27

Which type of wireless LAN technology utilizes the 2.4 GHz frequency band and provides data transfer rates of up to 54 Mbps?

Accepted Answer

802.11b

Answer

802.11a

Answer

802.11g

Answer

802.11n

Question 28

Which generation of cellular technology introduced the concept of Long Term Evolution (LTE)?

Accepted Answer

4G

Answer

3G

Answer

5G

Answer

6G

Question 29

How do cellular networks contribute to smart city initiatives, such as traffic management, environmental monitoring, and public safety?

Accepted Answer

Automated traffic control and navigation systems

Accepted Answer

Remote monitoring systems for air and water quality

Accepted Answer

Enhanced surveillance and emergency response systems

Question 30

What modulation technique does the latest Wi-Fi standard, 802.11ax, use?

Accepted Answer

Quadrature Amplitude Modulation (QAM)

Answer

Phase-Shift Keying (PSK)

Answer

Frequency-Shift Keying (FSK)

Answer

Code Division Multiple Access (CDMA)

Question 31

Which IEEE 802.11 standard supports very high-speed wireless local area networks (WLANs)?

Accepted Answer

IEEE 802.11ac

Answer

IEEE 802.11b

Answer

IEEE 802.11n

Answer

IEEE 802.11g

Question 32

Which antenna type is predominantly used in Wi-Fi access points to maximize coverage?

Accepted Answer

Omnidirectional

Answer

Yagi-Uda

Answer

Horn

Answer

Parabolic

Question 33

In wireless networks, what is the primary purpose of using a Medium Access Control (MAC) address?

Accepted Answer

Unique device identification

Answer

IP address assignment

Answer

Network connection establishment

Answer

Data encryption

Question 34

Which common security protocol is utilized in wireless networks?

Accepted Answer

WPA2

Answer

Transport Layer Security (TLS)

Answer

IP Security (IPsec)

Answer

Secure Shell (SSH)

Question 35

Which technique is commonly employed to enhance wireless network performance?

Accepted Answer

Channel bonding

Answer

VLAN segmentation

Answer

Firewall configuration

Answer

Cable routing

Question 36

What is the primary benefit of using a mesh topology in wireless networks?

Accepted Answer

Increased resilience and coverage

Answer

Reduced latency

Answer

Enhanced security

Question 37

Which security risk is particularly relevant to wireless networks?

Accepted Answer

Eavesdropping

Answer

Physical damage

Answer

Software vulnerabilities

Answer

Power outages

Question 38

What is the primary difference between a wireless LAN (WLAN) and a wireless wide area network (WWAN)?

Accepted Answer

Coverage area

Answer

Network topology

Answer

Data transfer rates

Answer

Security protocols

Question 39

In 5G networks, what is the main advantage of using Network Slicing?

Accepted Answer

Lower latency for crucial applications

Answer

More bandwidth for all applications

Answer

Better security for sensitive data

Question 40

Which IEEE 802.11 standard defines the advanced networking protocol 802.11n?

Accepted Answer

802.11n

Answer

802.11g

Answer

802.11ax

Answer

802.11ac

Question 41

Which frequency range is primarily used by Bluetooth technology for wireless communication?

Accepted Answer

2.4 GHz

Answer

900 MHz

Answer

5 GHz

Answer

60 GHz

Question 42

What is the primary challenge faced in optimizing the performance of wireless networks?

Accepted Answer

Interference

Answer

Power consumption

Answer

Bandwidth limitations

Answer

Security concerns

Question 43

Which organization is responsible for developing and maintaining the specifications and standards for Wi-Fi technology?

Accepted Answer

Wi-Fi Alliance

Answer

IEEE

Answer

IETF

Answer

ITU

Question 44

What is the name of the protocol used for authentication and key exchange in Wi-Fi networks to secure data communication?

Accepted Answer

WPA handshake

Answer

DNS

Answer

DHCP

Answer

ARP

Question 45

Which modulation technique is employed in 802.11ac networks to enhance data transmission rates?

Accepted Answer

OFDM with MIMO

Answer

RTS/CTS

Answer

QAM

Answer

PSK

Question 46

In a mesh topology, data is forwarded through multiple paths. What is a primary advantage of this distributed data forwarding?

Accepted Answer

Increased network resilience and fault tolerance

Answer

Reduced power consumption and cost

Answer

Enhanced security and privacy

Answer

Lower latency and higher bandwidth

Question 47

Wireless networks are distinct from wired networks primarily due to which key feature?

Accepted Answer

Mobility of connected devices

Answer

Lower power requirements

Answer

Greater reliability and security

Answer

Higher data transfer rates

Question 48

Which of the following is NOT a commonly used wireless network technology?

Accepted Answer

Ethernet

Answer

Wi-Fi

Answer

Cellular

Answer

Bluetooth

Question 49

The IEEE 802.11 standard defines the specifications for what type of wireless networks?

Accepted Answer

Wi-Fi

Answer

Bluetooth

Answer

Cellular

Question 50

In terms of wireless network security, which of the following protocols is widely adopted for encryption and authentication?

Accepted Answer

WPA2

Answer

FTP

Answer

TCP/IP

Answer

HTTP

Question 51

A MAC address is a unique identifier assigned to network devices. What is its primary purpose in a wireless network?

Accepted Answer

Identifying and distinguishing individual devices on the network

Answer

Controlling network access and permissions

Answer

Establishing network connections

Question 52

Cellular networks offer several advantages. Which of the following is a key benefit of cellular networks?

Accepted Answer

Extensive geographical coverage

Answer

Low deployment and maintenance costs

Answer

Extremely high data transfer speeds

Question 53

The evolution of cellular networks has brought about significant advancements. What is the primary difference between 3G and 4G cellular networks?

Accepted Answer

Increased data transfer speeds and network capacity

Answer

Lower power consumption and longer battery life

Answer

Expanded coverage area and signal strength

Question 54

Signal strength plays a crucial role in wireless network performance. Which of the following factors can significantly impact signal strength?

Accepted Answer

Physical barriers, distance from access points, and electromagnetic interference

Answer

Device battery level and power-saving modes

Answer

Number of connected devices and network traffic

Answer

Operating system version and software updates

Question 55

Mesh networks have gained attention for their unique topology. What is a defining characteristic of a mesh network?

Accepted Answer

Devices can connect directly to multiple other devices, forming a decentralized and self-organizing network

Answer

The network is primarily designed for long-range and high-speed data transmission

Answer

A central access point or router manages all network connections

Question 56

Which of the following is a trend in wireless network development?

Accepted Answer

Use of software-defined networking (SDN)

Answer

Increase in fiber optic cable usage

Answer

Elimination of Wi-Fi networks

Answer

Decrease in mobile device usage