CIK Telecom Interview Questions, Process, and Tips

Domain Name Service (DNS) is a system that translates domain names into IP addresses, allowing users to access websites using human-readable names.

• DNS is like a phone book for the internet, translating domain names (like google.com) into IP addresses (like 172.217.3.206).

• DNS helps users access websites by resolving domain names to the corresponding IP addresses.

• DNS servers store records of domain names and their corres...read more

A router is a device that forwards data packets between computer networks, while a modem is a device that modulates and demodulates signals for internet access.

• Router connects multiple devices to a network and routes data between them

• Modem connects a device to the internet by modulating and demodulating signals

• Examples: Router - TP-Link Archer C7, Modem - Motorola MB7420

Ping and tracert are network diagnostic tools used to test connectivity and troubleshoot network issues.

• Ping sends a packet to a specific IP address to check if it is reachable and measures the round-trip time.

• Tracert shows the route that packets take to reach a destination, displaying each hop along the way.

• Ping is used to test basic network connectivity, while tracert helps identify network latency and routing issues

2.5g refers to 2.5 GHz frequency band, while 5GHz refers to 5 GHz frequency band used in wireless communication.

• 2.5g operates in the 2.4 GHz frequency band, while 5GHz operates in the 5 GHz frequency band.

• 5GHz offers faster data transfer speeds and less interference compared to 2.5g.

• 2.5g is commonly used in older Wi-Fi standards like 802.11b/g, while 5GHz is used in newer standards like 802.11n/ac.

• Devices supporting 5G

DNS stands for Domain Name System, which translates domain names to IP addresses.

• DNS is like a phone book for the internet, translating human-readable domain names (like google.com) to IP addresses (like 172.217.3.206)

• It helps users access websites by typing in easy-to-remember domain names instead of complex IP addresses

• DNS servers store records of domain names and their corresponding IP addresses

Modem connects to ISP, router connects devices to network, DNS translates domain names to IP addresses, DHCP assigns IP addresses to devices.

• Modem connects to Internet Service Provider (ISP) to access the internet

• Router connects multiple devices to the network and directs traffic between them

• DNS (Domain Name System) translates domain names (e.g. www.google.com) to IP addresses

• DHCP (Dynamic Host Configuration Protocol)

The OSI Layers refer to the Open Systems Interconnection model, which is a conceptual framework that standardizes the functions of a telecommunication or computing system into seven distinct layers.

• The OSI Layers include: Physical, Data Link, Network, Transport, Session, Presentation, and Application.

• Each layer has specific functions and protocols that help in the communication process.

• For example, the Physical layer d...read more

A modem is a device that connects your computer to the internet through your ISP, while a router is a device that connects multiple devices to a network and manages traffic between them.

• Modem stands for modulator-demodulator and converts digital signals to analog signals for transmission over telephone lines

• Router directs traffic between devices on a network and can prioritize traffic for certain devices or application...read more

A dual band router is a device that can operate on two different frequencies, while a modem is a device that connects your network to the internet.

• A dual band router can operate on both 2.4GHz and 5GHz frequencies, providing better speed and coverage.

• A modem is a device that connects your network to the internet, while a router is a device that connects multiple devices within your network.

• A modem is required to connec...read more