HCLTech Senior Network Specialist Interview Questions and Answers

Q1. What do you know about routing?
Ans. 
Routing is the process of selecting the best path for network traffic to reach its destination.
• Routing involves determining the optimal path for data packets to travel from the source to the destination.

• Routers use routing tables to make decisions on how to forward packets based on destination IP addresses.

• There are different types of routing protocols such as RIP, OSPF, EIGRP, and BGP.

• Static routing involves manually ...read more
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Q2. What do you know about switching?
Ans. 
Switching is a networking technique used to forward data packets between devices on a computer network.
• Switching involves the process of receiving, analyzing, and forwarding data packets within a network.

• Switches operate at Layer 2 (Data Link Layer) of the OSI model.

• Switches use MAC addresses to determine the destination of data packets.

• Switches create separate collision domains and broadcast domains, improving network...read more
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Q1. Technical vs no tech
Ans. 
Technical skills are essential for a Network Engineer, but soft skills are also important for effective communication and teamwork.
• Technical skills are necessary for configuring and troubleshooting network devices.

• Soft skills like communication, teamwork, and problem-solving are crucial for working effectively with colleagues and clients.

• Balancing technical expertise with interpersonal skills is key to success in the r...read more
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Q2. Dhcp vs dns gdp vs rdp frp vs 30nd
Ans. 
DHCP is a protocol used to assign IP addresses dynamically to devices on a network, while DNS is a system that translates domain names to IP addresses.
• DHCP assigns IP addresses to devices on a network dynamically

• DNS translates domain names to IP addresses

• RDP (Remote Desktop Protocol) allows users to remotely connect to a computer

• FRP (Fiberglass Reinforced Plastic) is a material used in construction

• 30nd does not seem to
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Q1. What is stuck switching?
Ans. 
Stuck switching refers to a situation where a network switch is unable to forward traffic due to a malfunction or configuration issue.
• Stuck switching can occur when a switch's forwarding table becomes corrupted or when there is a hardware failure.

• It can also happen if there is a loop in the network causing broadcast storms.

• Troubleshooting stuck switching involves checking the switch's configuration, monitoring network ...read more
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Q2. What is bgp path selection process
Ans. 
BGP path selection process determines the best path for routing based on various attributes.
• BGP selects the path with the highest weight attribute first

• If weights are the same, BGP looks at the local preference attribute

• Next, BGP considers the AS path length

• BGP then checks the origin code attribute

• After that, BGP looks at the MED (Multi-Exit Discriminator) attribute

• If all else is equal, BGP chooses the path with the lo...read more
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Q3. What is stub area
Ans. 
A stub area is an OSPF area that does not contain external routes.
• Stub areas reduce the amount of routing information exchanged within an OSPF network.

• Stub areas use a default route to reach external networks.

• Stub areas are commonly used to reduce the size of the OSPF database and improve network performance.
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Q4. What is stp? how to work.
Ans. 
STP stands for Spanning Tree Protocol, used in network environments to prevent loops and ensure redundant paths are utilized efficiently.
• STP is a network protocol used to prevent loops in Ethernet networks.

• It works by selecting a single path for data traffic while blocking redundant paths.

• STP elects a root bridge and calculates the shortest path to each network segment.

• If a link fails, STP recalculates the network topo...read more
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Q1. Introduction 🤣
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Q2. Tell me your weakness ? 🤣
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Q1. General discussion
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Q1. Questions related to networking
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Q2. Routers switch configuration and commands
Ans. 
Routers switch configuration and commands involve setting up and managing network devices for efficient data routing.
• Routers use commands like 'show ip route' to display routing table information

• Configuration involves setting up IP addresses, subnet masks, and default gateways

• Commands like 'show interfaces' can display interface status and configuration details
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Q1. Question related to retention
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Q2. Question related to aspirations
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Q1. Basic questions , about expected salary , work experience
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Q1. Networking CCNA question, windows troubleshooting
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Q1. Managerial interview question
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Q1. Must Hsrp, access list, stp and routing protocols
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Q2. Switching protocol, GRE tunnel, ipsec tunnel, Cisco WLC
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Q1. Bgp, vtp , vlan, DHCP
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