Karvy Innotech Network Engineer Interview Questions, Process, and Tips

Q1. Packet flow in PALO ALTO FIREWALL?
Ans. 
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?
Ans. 
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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Q1. Explain Firewall
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Firewall is a network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules.
• Firewall acts as a barrier between a trusted internal network and untrusted external network.

• It can be implemented in hardware, software, or a combination of both.

• Firewalls can filter traffic based on IP addresses, ports, protocols, and application types.

• They can prevent unauthori...read more
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Q2. Explain Switching and routing
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Switching involves forwarding data packets within a network, while routing involves determining the best path for data packets to travel between networks.
• Switching operates at Layer 2 of the OSI model, using MAC addresses to forward data within a local network.

• Routing operates at Layer 3 of the OSI model, using IP addresses to determine the best path for data to travel between networks.

• Switches use MAC address tables t...read more
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Q1. Depending on candidate
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Q2. Solve the solution
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Q3. Provide support
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Must have knowege of the work

Q1. Nothing only basic they are osking
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Q2. Must have basic knowledge of the work
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Q1. Salary related questions
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Q2. Location and position
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Q1. What is subnetting? How many types of routing ? What is static routing? What is the subnet mask of /27 ? What is STP ? How is it work ? What is etherchannel? What is VLAN and how to create ? What is loopin...read more
Ans. 
Subnetting is dividing a network into smaller subnetworks. There are two types of routing: static and dynamic. Static routing is manually configured by the network administrator. The subnet mask of /27 is 255.255.255.224. STP is a protocol used to prevent loops in a network. Etherchannel is a technique used to combine multiple physical links into a single logical link. VLAN is a logical grouping of devices in a network...read more
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