Infinite Computer Solutions Network Lead Interview Questions and Answers for Experienced

Q1. Ip phone boot up process
Ans. 
The IP phone boot up process involves several steps to initialize the device and connect to the network.
• The phone powers on and performs a self-test

• It obtains an IP address from the DHCP server

• It downloads the firmware and configuration files from the TFTP server

• It registers with the call manager or PBX

• It is ready to make and receive calls
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Q2. Explain about SIP call flow
Ans. 
SIP call flow is the process of establishing, maintaining, and terminating a session initiated by Session Initiation Protocol (SIP).
• SIP INVITE message is sent from the caller to the callee

• Callee responds with a SIP 100 Trying message

• Callee sends a SIP 180 Ringing message to indicate the phone is ringing

• Callee sends a SIP 200 OK message to indicate the call is accepted

• Media negotiation takes place between the caller and...read more
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Q1. What was the critical issue reacently faced
Ans. 
Recently faced critical issue was network outage due to hardware failure.
• Hardware failure caused network outage

• Affected multiple departments and caused significant downtime

• Quickly identified and replaced faulty hardware to restore network

• Implemented redundancy measures to prevent future outages
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Q2. How will you manage a ticket
Ans. 
A ticket can be managed by following a systematic approach.
• Acknowledge the ticket and assign it to the appropriate team member

• Set a priority level based on the severity of the issue

• Communicate with the customer and provide regular updates

• Resolve the issue and close the ticket

• Document the entire process for future reference
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Q1. Why are you looking for a job change?
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Q2. What is your expected salary?
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Q3. And is your expected salary negotiable?
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Coding test contains 2 questions

Q1. What's is the function of switch and router how to use in networking
Ans. 
Switches connect devices within a network, while routers connect different networks and enable communication between them.
• Switches operate at the data link layer of the OSI model and use MAC addresses to forward data within a network.

• Routers operate at the network layer of the OSI model and use IP addresses to route data between different networks.

• Switches create multiple collision domains, while routers create multipl...read more
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Q1. What is the role of as eng. To improve network
Ans. 
The role of a network engineer is to improve network performance, security, and reliability through design, implementation, and maintenance.
• Designing and implementing network upgrades to increase performance

• Implementing security measures to protect against cyber threats

• Monitoring network traffic and troubleshooting issues to ensure reliability

• Optimizing network configurations for efficiency

• Collaborating with other IT p...read more
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Q1. As we selected us how to mange surveillance in our project
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Q1. Do you know TCP Header Flags?
Ans. 
Yes, TCP Header Flags are used to control the flow of data between devices.
• TCP Header Flags are 6 bits long and are used to control the flow of data between devices.

• There are 6 TCP Header Flags: URG, ACK, PSH, RST, SYN, and FIN.

• URG is used to indicate that the data is urgent and should be prioritized.

• ACK is used to acknowledge receipt of data.

• PSH is used to push data to the receiving device.

• RST is used to reset the con...read more
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Q2. Difference Between PUSH and URG Flag
Ans. 
PUSH flag is used to indicate the start of a new TCP session while URG flag is used to indicate urgent data.
• PUSH flag is set when a sender wants to push data to the receiver without waiting for a full buffer

• URG flag is set when a sender wants to indicate that some data is urgent and should be processed immediately

• PUSH flag is used to initiate a new session while URG flag is used to indicate the presence of urgent data
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Q3. What is TLS Handshake?
Ans. 
TLS Handshake is a process of establishing a secure connection between a client and a server.
• TLS Handshake involves a series of steps to establish a secure connection

• It includes negotiation of encryption algorithm, exchange of keys, and verification of digital certificates

• TLS Handshake ensures confidentiality, integrity, and authenticity of data transmitted over the network

• Examples of applications using TLS Handshake a
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Q1. CCNA Switching and routing topics are covered.
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Networking question

Q1. There was very basic questions, I will advise just be strong in basics then it will be enough to clear 2nd round
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Q1. General questions
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