Mobile Networks and Protocols: A Comprehensive Guide for Beginners

Question 1

Which modulation technique is used in GSM for transmitting speech signals?

Accepted Answer

GMSK

Answer

QPSK

Answer

MSK

Answer

OFDM

Question 2

What is the primary responsibility of the MAC layer in Bluetooth?

Accepted Answer

Packet framing, error detection, and addressing

Answer

Routing and network management

Answer

Security and authentication

Answer

Data encryption and decryption

Question 3

What is the key purpose of the RACH (Random Access Channel) procedure in LTE?

Accepted Answer

Establishing initial communication between a UE and the network

Answer

Performing cell updates and handover

Answer

Managing power consumption of devices

Answer

Providing location information to the network

Question 4

Which protocol is primarily responsible for managing network connections and IP address assignment in Wi-Fi networks?

Accepted Answer

DHCP

Answer

WPA2

Answer

802.11e

Answer

EAP

Question 5

What is the fundamental difference between FDMA and TDMA, two commonly used multiple access techniques?

Accepted Answer

Frequency division versus time division multiple access

Answer

Orthogonal versus non-orthogonal multiple access

Answer

Spread spectrum versus narrowband multiple access

Answer

Single carrier versus multicarrier multiple access

Question 6

Which access technique is employed in GSM networks?

Accepted Answer

Time Division Multiple Access (TDMA)

Answer

Code Division Multiple Access (CDMA)

Answer

Orthogonal Frequency Division Multiplexing (OFDM)

Answer

Space Division Multiple Access (SDMA)

Question 7

Which network protocol facilitates communication between mobile devices and base stations?

Accepted Answer

WAP (Wireless Application Protocol)

Answer

TCP/IP

Answer

UDP

Answer

HTTP

Question 8

What is the primary role of the IP Multimedia Subsystem (IMS) in mobile networks?

Accepted Answer

Facilitating multimedia services over IP networks

Answer

Managing network security

Answer

Routing user traffic

Answer

Authenticating users

Question 9

Which of the following is NOT a key cellular network standard?

Accepted Answer

Wi-Fi

Answer

GSM

Answer

LTE

Answer

CDMA

Question 10

What is the primary function of the Media Access Control (MAC) layer in a wireless network?

Accepted Answer

To regulate network access and prevent collisions

Answer

To establish and manage network connections

Answer

To forward data packets across the network

Answer

To encrypt data for secure transmission

Question 11

Which modulation technique is primarily employed in LTE networks?

Accepted Answer

Quadrature Amplitude Modulation (QAM)

Answer

Frequency Shift Keying (FSK)

Answer

Phase Shift Keying (PSK)

Answer

Code Division Multiple Access (CDMA)

Question 12

What is the primary responsibility of a Mobility Management Entity (MME) within an LTE network?

Accepted Answer

Managing device authentication and mobility

Answer

Routing data packets through the core network

Answer

Providing Quality of Service (QoS) control

Answer

Encrypting user traffic

Question 13

Which protocol is primarily used for IP address assignment in mobile networks?

Accepted Answer

DHCP

Answer

DNS

Answer

ARP

Answer

NAT

Question 14

What is the main purpose of deploying a femtocell in a mobile network?

Accepted Answer

To enhance coverage and capacity within indoor environments

Answer

To provide dedicated and secure network access

Answer

To improve handover performance

Answer

To mitigate interference between adjacent cells

Question 15

Which of the following is a critical security measure implemented in LTE networks?

Accepted Answer

Encryption and authentication mechanisms

Answer

Access control policies

Answer

Intrusion detection systems

Answer

Firewall protection

Question 16

Which technology is designed to bring cloud computing capabilities to the edge of the network, enabling low-latency, high-speed data processing for mobile devices at the network's edge?

Accepted Answer

Mobile Edge Computing (MEC)

Answer

Cellular Network

Answer

Wi-Fi

Answer

Bluetooth

Question 17

Which multiple access technique is used in GSM to allow multiple users to share the same channel?

Accepted Answer

TDMA

Answer

OFDMA

Answer

FDMA

Answer

CDMA

Question 18

Which routing protocol is specifically designed for mobile ad hoc networks (MANETs), where the network topology changes frequently?

Accepted Answer

OLSR

Answer

OSPF

Answer

RIP

Answer

BGP

Question 19

Which layer of the TCP/IP model handles the establishment and management of network connections and ensures reliable data transmission?

Accepted Answer

Transport Layer

Answer

Network Layer

Answer

Application Layer

Answer

Data Link Layer

Question 20

What is the primary function of a MAC address in a mobile device?

Accepted Answer

To uniquely identify the device on the network and enable communication with other devices.

Answer

To store user data and applications on the device.

Answer

To control network access and regulate traffic flow.

Answer

To provide a secure connection and protect data from unauthorized access.

Question 21

What is the main purpose of Bluetooth technology in mobile devices?

Accepted Answer

To facilitate short-range wireless communication for data transfer, device connectivity, and audio streaming.

Answer

To track and locate devices using GPS and other positioning technologies.

Answer

To enable mobile payments and contactless transactions.

Answer

To provide internet connectivity and broadband access to devices.

Question 22

Which of the following is a key difference between IPv4 and IPv6 addresses?

Accepted Answer

IPv6 has a significantly larger address space compared to IPv4.

Answer

IPv6 provides enhanced security features that are not available in IPv4.

Answer

IPv6 addresses are processed faster and more efficiently than IPv4 addresses.

Answer

IPv6 is not widely adopted and implemented in network infrastructures.