Bharti Airtel Service Desk Engineer Interview Questions and Answers

Q1. Different n/w layers
Ans. 
Different network layers include physical, data link, network, transport, session, presentation, and application layers.
• Physical layer: responsible for transmitting raw bits over a communication channel

• Data link layer: responsible for error-free transfer of data between nodes on a network

• Network layer: responsible for routing data packets between networks

• Transport layer: responsible for reliable data transfer between a...read more
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Q1. Firewall works on what layers
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Firewall works on multiple layers of OSI model
• Firewall operates on layers 3 (network layer) and 4 (transport layer) of the OSI model

• It can filter traffic based on IP addresses, ports, protocols, and other criteria

• Firewalls can also perform deep packet inspection to detect and block malicious traffic

• Examples of firewall software include Cisco ASA, pfSense, and Windows Firewall
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Q1. How much experience u have and what are the roles and responsibilities?
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Q1. Tell list 20 Linux commands?
Ans. 
List of 20 commonly used Linux commands for system integration engineers.
• ls - list directory contents

• cd - change directory

• pwd - print working directory

• cp - copy files and directories

• mv - move/rename files and directories

• rm - remove files and directories

• mkdir - create directories

• rmdir - remove directories

• cat - concatenate and display files

• grep - search text patterns

• chmod - change file permissions

• chown - change file owne...read more
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Medium level quant , English and Reasoning 15 question each 45 min total timing and cuttoff around 35 marks

Q1. From cloud and networking
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Q1. Its more difficult from other 2 round because maximum people eliminate so answer wisely
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Q1. Describe LTE Call flow
Ans. 
LTE Call flow involves multiple steps for establishing and maintaining a connection between a mobile device and the network.
• UE sends a connection request to eNodeB

• eNodeB forwards the request to MME for authentication and authorization

• MME communicates with HSS for user authentication

• Once authenticated, MME assigns a temporary ID to UE and establishes a connection with eNodeB

• Data transfer occurs between UE and network th
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Q1. Tell me about yourself.
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Q2. Share details of your previous job
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