Kyndryl Network Security Engineer Interview Questions and Answers

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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 STP What is ping What is networking What is osi model What is ip address What are the classes of ip address What is mac adress What is ARP What is RRRP
Ans. 
STP is a network protocol that prevents loops in Ethernet networks. Ping is a network utility used to test connectivity. OSI model is a framework for understanding how networks operate. IP address is a unique identifier for devices on a network. MAC address is a hardware address for network devices. ARP is a protocol used to map IP addresses to MAC addresses. RRRP is not a standard networking term.
• STP stands for Spanni...read more
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Q1. Nothing much Its all about our agree
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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. 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. What is bgp and working
Ans. 
BGP (Border Gateway Protocol) is a routing protocol used to exchange routing information between different networks on the internet.
• BGP is used by internet service providers to make routing decisions.

• It operates on TCP port 179.

• BGP uses path attributes to determine the best route to a destination.

• BGP can be configured in different ways such as eBGP (external BGP) and iBGP (internal BGP).
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Q2. What was you network experience
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Q1. What OSPF and its state and LSAs
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 that uses Dijkstra's algorithm to calculate the shortest path to each network.

• OSPF routers exchange Link State Advertisements (LSAs) to build a topology database.

• There are several types of LSAs, including Router LSAs, Network LSAs, Summary LSAs, and AS External LSAs.

• O...read more
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Q2. VLAN and DTP, STP. RSTP, HSRP/VRRP protocols
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Q3. Etherchannel, EIGRP
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Q1. BGP and its states and attributes
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BGP (Border Gateway Protocol) is a routing protocol used to exchange routing information between different autonomous systems.
• BGP has four main states: Idle, Connect, OpenSent, and Established.

• BGP attributes include AS_PATH, NEXT_HOP, LOCAL_PREF, and ORIGIN.

• AS_PATH attribute shows the path the route has taken through different autonomous systems.

• NEXT_HOP attribute specifies the next hop IP address to reach a particular...read more
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Q2. Monitoring tool
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Q1. Salary negotiation
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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
Ans. 
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?
Ans. 
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?
Ans. 
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?
Ans. 
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?
Ans. 
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?
Ans. 
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 osi model
Ans. 
The OSI model is a conceptual framework that standardizes the functions of a telecommunication or computing system into seven layers.
• The OSI model stands for Open Systems Interconnection model.

• It helps in understanding how different networking protocols work together.

• Each layer in the OSI model has specific functions and communicates with adjacent layers.

• Examples of OSI model layers include physical layer, data link la
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Q2. It is reference model
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