Kyndryl Network Engineer Interview Questions, Process, and Tips

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
Answered by AI
Add your answer
Q2. VLAN and DTP, STP. RSTP, HSRP/VRRP protocols
Add your answer
Q3. Etherchannel, EIGRP
Add your answer

Q1. BGP and its states and attributes
Ans. 
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
Answered by AI
Add your answer
Q2. Monitoring tool
Add your answer

Q1. Salary negotiation
Add your answer

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.
Answered by AI
Add your answer
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
Answered by AI
Add your answer
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
Answered by AI
Add your answer
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
Answered by AI
Add your answer
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
Answered by AI
Add your answer
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
Answered by AI
Add your answer
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
Answered by AI
Add your answer
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
Answered by AI
Add your answer

Q1. Discussed about previous experience
Add your answer
Q2. Discussed about educational background
Add your answer
Q3. Discussed about salary negotiation.
Add your answer

Aptitude questions. Not much considered for final selection.

Q1. 1) Have through understanding of your skills Mentioned in Resume.
Ans. You should know as your resume speaks what you know.
Answered Anonymously
Add your answer
Q2. Networking Basics like AD values, Classes of IP address, Calculating number of hosts, Static Routing. Etc and about working in your previous company if you are working professional.
Add your answer

Q1. Advanced technical concepts like Dynamite Routing Protocols, OSPF , OSPF stages, DR BDR Election, OSPF LSA types, BGP, BGP Attributes, BGP Dual Homed Dual Router scenario for incoming and outgoing traffic....read more
Add your answer

Q1. Salary negotiation, one to one questions, happened over call for me.
Add your answer

Q1. OSI Model, DNS recods, Zones, DHCP & DNS
Add your answer