10+ Boatload Minds Interview Questions and Answers

GSM architecture includes multiple layers of OSI model for connectivity. Each layer has a specific function.

• GSM architecture consists of physical, data link, network, transport, and application layers.

• Physical layer handles the transmission of bits over the air interface.

• Data link layer provides error-free transmission of data frames.

• Network layer handles routing and addressing of data packets.

• Transport layer ensures reliable end-to-end data transfer.

• Application layer provide...read more

Default loopback IP address is 127.0.0.1 and private IPs are reserved for internal networks.

• Default loopback IP address is used to test network software without connecting to a network.

• Private IPs are reserved for internal networks and cannot be accessed from the internet.

• Private IP ranges include 10.0.0.0/8, 172.16.0.0/12, and 192.168.0.0/16.

CRC stands for Cyclic Redundancy Check. It is an error-detecting code used in network communication to ensure data integrity.

• CRC is a mathematical algorithm that generates a fixed-size checksum for a block of data.

• The checksum is appended to the data and is recalculated at the receiving end to check for errors.

• If the calculated checksum doesn't match the received checksum, it indicates that the data has been corrupted during transmission.

• CRC helps in detecting errors caused b...read more

To configure DHCP in a router through CMD, use the 'ip dhcp pool' command and specify the network and default gateway.

• Open CMD and access the router's CLI

• Enter 'enable' to access privileged mode

• Enter 'configure terminal' to enter global configuration mode

• Enter 'ip dhcp pool [pool name]' to create a DHCP pool

• Specify the network and default gateway using the 'network' and 'default-router' commands

• Exit configuration mode and save changes with 'exit' and 'write memory'

• Example: 'i...read more

To configure VLAN in a router through CMD, use the 'vlan' command and specify the VLAN ID and name.

• Open CMD and connect to the router's console

• Enter 'enable' to access privileged mode

• Enter 'configure terminal' to enter global configuration mode

• Enter 'vlan [VLAN ID]' to create the VLAN

• Enter 'name [VLAN name]' to assign a name to the VLAN

• Exit configuration mode by entering 'exit'

• Save the configuration by entering 'write memory'

• Example: 'vlan 10' and 'name Sales' will create a V...read more

DHCP stands for Dynamic Host Configuration Protocol. It is a network protocol that assigns IP addresses to devices on a network.

• DHCP automates the process of assigning IP addresses to devices on a network.

• It helps to avoid IP address conflicts and makes it easier to manage a large network.

• DHCP also provides other network configuration information, such as subnet mask and default gateway.

• Without DHCP, network administrators would have to manually assign IP addresses to each de...read more

Modulation techniques are used to encode information onto a carrier signal for transmission over a communication channel.

• Modulation techniques vary in terms of the type of carrier signal used (analog or digital), the type of modulation (amplitude, frequency, phase), and the complexity of the modulation scheme.

• Examples of modulation techniques include amplitude modulation (AM), frequency modulation (FM), phase modulation (PM), and quadrature amplitude modulation (QAM).

• Modulati...read more

GSM and CDMA are two different technologies used in mobile communication.

• GSM uses SIM cards while CDMA does not.

• GSM allows for easy switching of phones while CDMA does not.

• GSM has better international roaming capabilities than CDMA.

• CDMA has better call quality and network capacity than GSM.

• GSM is more widely used globally while CDMA is mostly used in the US and parts of Asia.

BGP is a routing protocol used to exchange routing information between different networks on the internet.

• BGP stands for Border Gateway Protocol.

• It is used to connect different autonomous systems (AS) on the internet.

• BGP is a path-vector protocol, which means it selects the best path for data to travel based on a number of factors such as shortest path, least number of hops, etc.

• BGP is used by internet service providers (ISPs) to exchange routing information with each other.

• B...read more

To check IP route through CMD, use the 'route print' command.

• Open Command Prompt

• Type 'route print' and press Enter

• The IP route table will be displayed

• You can filter the results using various parameters like destination IP, interface, etc.

ITIL fundamentals are a set of best practices for IT service management.

• ITIL stands for Information Technology Infrastructure Library

• It includes processes for service strategy, design, transition, operation, and continual improvement

• ITIL helps organizations align their IT services with business needs and improve efficiency

• Examples of ITIL processes include incident management, problem management, and change management

HLR, VLR, AuC, EIR are components of a mobile network that handle subscriber information and authentication.

• HLR (Home Location Register) stores subscriber information and location data

• VLR (Visitor Location Register) stores temporary subscriber information when they roam outside their home network

• AuC (Authentication Center) stores authentication and encryption keys for subscribers

• EIR (Equipment Identity Register) stores information about mobile devices, including blacklisted d...read more

Modulation is the process of varying a signal's characteristics to transmit information. TCP/IP is a protocol used for communication between devices. Guard band is a frequency band used to separate two channels.

• Modulation is used in radio communication to transmit information by varying the amplitude, frequency, or phase of a carrier wave.

• TCP/IP is a set of protocols used for communication between devices on a network. It includes protocols for data transmission, routing, and...read more

2G, 3G, and 4G are different generations of mobile network technology.

• 2G stands for second generation and is based on digital technology. It allows for basic voice and text communication.

• 3G stands for third generation and introduced mobile data and internet connectivity.

• 4G stands for fourth generation and offers faster internet speeds and improved data transfer rates.

• Examples of 2G networks include GSM and CDMA. Examples of 3G networks include UMTS and HSPA. Examples of 4G ne...read more

CDMA is a wireless communication technology that allows multiple users to share the same frequency band simultaneously.

• CDMA stands for Code Division Multiple Access.

• It uses spread spectrum technology to allow multiple users to transmit data simultaneously.

• Each user is assigned a unique code to differentiate their signal from others.

• Examples of CDMA networks include Verizon and Sprint in the US.

• HandShaking is a process in telecom where two devices exchange information to estab...read more