Orbit Techsol Network Security Engineer Interview Questions and Answers

Q1. Mostly from tcp/ip , dns, dhcp and firewall
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Q1. Tcp/ip , dns , dhcp , paloalto firewall all features
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Aptitude having all type of questions like reasoning, verbal,…..

Q1. Technical round is involved in all subjects for freshers like java (mainly opps concept) , dbms,…
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Q1. This can u technical or managerial round depends.
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Q1. Tell about the SDWAN concept.
Ans. 
SDWAN is a software-defined approach to managing and optimizing WAN connections.
• SDWAN uses software to control and manage network traffic across multiple WAN connections.

• It can dynamically route traffic based on network conditions and application requirements.

• SDWAN can improve network performance, reduce costs, and simplify network management.

• Examples of SDWAN vendors include Cisco, VMware, and Silver Peak.
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Q2. Difference between OSPF & EIGRP
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OSPF is a link-state protocol while EIGRP is a hybrid protocol.
• OSPF uses Dijkstra's algorithm to calculate the shortest path while EIGRP uses a metric based on bandwidth, delay, reliability, load, and MTU.

• OSPF supports VLSM and route summarization while EIGRP supports only route summarization.

• OSPF is an open standard protocol while EIGRP is a Cisco proprietary protocol.

• OSPF has a higher convergence time than EIGRP.

• OSPF...read more
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Q3. What is the cost of the default route?
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The cost of default route varies depending on the network infrastructure and service provider.
• The cost of default route is usually included in the overall cost of the internet service provided by the ISP.

• The cost may also depend on the type of connection, such as fiber optic or cable.

• In some cases, the cost may be higher for businesses that require more bandwidth and faster speeds.

• The cost may also vary depending on th...read more
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Q4. How OSPF neighbourship occuures?
Ans. 
OSPF neighbourship occurs when two OSPF routers establish a relationship to exchange routing information.
• OSPF routers send hello packets to discover neighbours

• If the hello packets are compatible, the routers become neighbours

• The routers exchange database descriptors to synchronize their link-state databases

• If the databases are the same, the routers become fully adjacent

• Neighbourship can be affected by network topology
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Q5. What is AS path prepend?
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AS path prepend is a technique used in BGP to influence the path selection of traffic.
• AS path prepend involves adding the same AS number multiple times to the AS path attribute of a BGP route advertisement.

• This makes the path appear longer and less desirable, causing traffic to prefer other paths.

• AS path prepend can be used to influence inbound or outbound traffic.

• Inbound traffic can be influenced by adding the local A...read more
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Q6. What is the difference between overlay and underlay?
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Overlay is a network virtualization technique that adds a layer of abstraction over the physical network, while underlay refers to the physical network infrastructure.
• Overlay is used to create virtual networks on top of the physical network infrastructure.

• Underlay refers to the physical network infrastructure that provides connectivity between devices.

• Overlay networks are used to provide network virtualization, multi-t...read more
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Q7. What is VRF and how it works?
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VRF stands for Virtual Routing and Forwarding. It is a technology that allows multiple instances of a routing table to coexist on the same router.
• VRF provides logical separation of routing tables, allowing multiple routing domains to exist on a single physical router.

• Each VRF has its own routing table and forwarding table, which allows for overlapping IP addresses to be used without conflict.

• VRFs are commonly used in M...read more
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Q8. What is BGP damping?
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BGP damping is a technique used to reduce the impact of unstable routes on the internet.
• BGP damping helps to prevent the propagation of unstable routes by temporarily suppressing them.

• It is used to reduce the impact of route flapping, which occurs when a route repeatedly alternates between available and unavailable states.

• BGP damping assigns a penalty value to unstable routes, and if the penalty exceeds a certain thres...read more
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Q1. Discussed about previous experience
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Q2. Discussed about educational background
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Q3. Discussed about salary negotiation.
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Q1. What is DNS please explain
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DNS stands for Domain Name System, which translates domain names to IP addresses.
• DNS is like a phone book for the internet, translating human-readable domain names (like google.com) to IP addresses (like 172.217.3.206).

• It helps users access websites by typing in easy-to-remember domain names instead of complex IP addresses.

• DNS servers store records of domain names and their corresponding IP addresses, allowing for effi...read more
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Q2. What is DHCP please explain
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DHCP stands for Dynamic Host Configuration Protocol, used to automatically assign IP addresses to devices on a network.
• DHCP eliminates the need for manual IP address configuration on each device

• It assigns IP addresses dynamically, allowing for efficient use of available addresses

• DHCP servers lease IP addresses to devices for a specific period of time

• DHCP also provides other network configuration information, such as su...read more
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Q1. UST is good interviewer is not good
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Q2. Even we don't know the question atleast Interviewer required minimum patience .Iritating
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Q1. Basic question only OSPF
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Q2. Load balancer configuration
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Q1. OSPF, Load balancer
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Q2. Load balancing configuration
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Q1. Tell me about your self
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I am a dedicated and experienced Network Support Engineer with a strong background in troubleshooting and resolving network issues.
• Over 5 years of experience in network support roles

• Proficient in configuring and maintaining network devices such as routers and switches

• Skilled in diagnosing and resolving network connectivity issues

• Familiar with network monitoring tools like Wireshark and Nagios

• Certified in Cisco CCNA and
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Q2. Some basic questions in networking
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Q1. Experiance working
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Q2. Working projects
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