Future Focus Infotech Network Engineer L1 Interview Questions and Answers

Q1. Basic switching
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Q2. Basic routing
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Q1. How soon you can join
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Q1. What is meaning of lan?
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LAN stands for Local Area Network, a network that connects computers and devices in a limited area such as a home, office, or building.
• LAN is a network that covers a small geographic area, typically within a single building or campus.

• It allows connected devices to communicate with each other and share resources such as printers and internet access.

• LANs are commonly used in homes, schools, and businesses to facilitate c...read more
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Q2. Lan how it should works?
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A LAN (Local Area Network) should work by connecting multiple devices within a limited area to share resources and communicate efficiently.
• LAN operates at a relatively high speed compared to WAN (Wide Area Network)

• Devices in a LAN are typically connected through Ethernet cables or Wi-Fi

• LAN allows for easy sharing of files, printers, and internet access among connected devices

• LAN can be set up in homes, offices, schools
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Q3. What is meaning by hub?
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A hub is a networking device that connects multiple devices in a network and broadcasts data to all connected devices.
• Hub operates at the physical layer of the OSI model.

• It does not filter data, instead it broadcasts data to all connected devices.

• Hub is considered a passive device as it does not perform any processing or filtering of data.

• Common types of hubs include Ethernet hubs and USB hubs.
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Q1. Salary related questions
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Q2. Location and position
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Q1. Packet flow in PALO ALTO FIREWALL?
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Packet flow in Palo Alto Firewall involves multiple stages including ingress, policy lookup, security policy enforcement, NAT, and egress.
• Packet enters the firewall through an ingress interface

• Firewall performs policy lookup to determine if the packet should be allowed or denied

• If allowed, the packet goes through security policy enforcement which includes threat prevention, URL filtering, etc.

• NAT (Network Address Trans...read more
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Q2. Ospf states and explain?
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OSPF (Open Shortest Path First) is a routing protocol used to determine the best path for data packets in a network.
• OSPF is a link-state routing protocol

• It uses Dijkstra's algorithm to calculate the shortest path

• OSPF routers exchange link-state advertisements (LSAs)

• It supports VLSM (Variable Length Subnet Masking)

• OSPF areas are used to divide large networks into smaller segments
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Q3. Election of DR AND BDR IN OSPF?
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DR and BDR in OSPF are elected based on priority values, with the highest priority becoming the DR and the second highest becoming the BDR.
• DR and BDR are elected within the OSPF network to ensure efficient communication and redundancy.

• The election process is based on priority values assigned to each router, with the highest priority becoming the DR and the second highest becoming the BDR.

• If two routers have the same pr...read more
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