Tata Communications Hardware & Networking Engineer Interview Questions and Answers

Q1. 2G, 3G, 4G, 5G Architecture
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Q1. Salary package, location, 24*7 shift
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Q1. Diploma cse Lileted
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Q2. Osi model network
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Q3. Computer ke Leleted
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Q4. Production quality
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Q5. Computer basic excel
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Q1. Do you know how firewall works
Ans. 
Firewall acts as a barrier between a trusted internal network and untrusted external network, controlling incoming and outgoing traffic based on predetermined security rules.
• Firewall filters network traffic based on rules set by administrators

• It can block or allow traffic based on IP addresses, ports, protocols, etc.

• Firewalls can be hardware-based or software-based

• Examples include Cisco ASA, Palo Alto Networks, and pfS
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Questions about networking and English

Q1. Questions about technical knowledge of network
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Q2. What is arp? What is HSRP? WHAT IS GLBP? WHAT IS NAT
Ans. 
ARP is a protocol used to map an IP address to a physical MAC address on a local network.
• ARP stands for Address Resolution Protocol.

• It operates at the Data Link Layer of the OSI model.

• ARP is used to resolve IP addresses to MAC addresses.

• It is essential for communication between devices on the same network.

• ARP requests are broadcasted to all devices on the network.

• Example: When a computer wants to send data to another d...read more
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Aptitude test test used individual skill and activity. Individual success and ignoring

Q1. SIP,IMS,SS7,call flow of sip and ims,ip,
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Q2. FTTH questions,Ont ,bont pri, analog, bri
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Q1. Salary negotiation, reason for leaving current job, general interview questions
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Q1. What is networking?
Ans. 
Networking is the practice of connecting computers and other devices to share resources and information.
• Networking involves the use of hardware such as routers, switches, and cables to create a network.

• It also includes the use of software protocols like TCP/IP to facilitate communication between devices.

• Networking allows devices to share resources such as files, printers, and internet connections.

• Examples of networking
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Q2. What is DHCP,DNS,VLAN,size of IPv4 and IPv6,
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DHCP assigns IP addresses, DNS translates domain names to IP addresses, VLAN separates network traffic, IPv4 has 32-bit addresses, IPv6 has 128-bit addresses.
• DHCP (Dynamic Host Configuration Protocol) assigns IP addresses to devices on a network dynamically.

• DNS (Domain Name System) translates domain names to IP addresses.

• VLAN (Virtual Local Area Network) separates network traffic into different segments.

• IPv4 has 32-bit...read more
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Q1. Osi layer,dhcp snooping, tcp/ip, basic questions about is-is,ospf,bgp, different between default vlan and native vlan, Stp, cisco switch models, ip address types, telnet, ssh, syslog, snmp, vpn, radius ser...read more
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Q1. Tell me about yourself.
Ans. 
I am an experienced NOC Engineer with a strong background in network operations and troubleshooting.
• I have a Bachelor's degree in Computer Science.

• I have worked for 5 years in a large telecommunications company, managing and monitoring network infrastructure.

• I am skilled in using network monitoring tools such as SolarWinds and Wireshark.

• I have experience in troubleshooting network issues, analyzing logs, and implementi...read more
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Q1. What is modulation, tcp/ip, guard band.
Ans. 
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....read more
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Q1. What is 2g, 3g,4g explain
Ans. 
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. Exampl...read more
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