NTT Data Network Engineer Interview Questions, Process, and Tips

Q1. General discussion
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Q1. Questions related to networking
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Q2. Routers switch configuration and commands
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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 OSPF and its state and LSAs
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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 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. OSI Model, DNS recods, Zones, DHCP & DNS
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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.
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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.
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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
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Q1. Salary negotiation, one to one questions, happened over call for me.
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Q1. Explain LSA Types in detail
Ans. 
LSA Types are used in OSPF to describe the type of information contained in the LSA.
• Type 1: Router LSA - contains information about the router and its directly connected networks

• Type 2: Network LSA - describes the networks connected to a multi-access network

• Type 3: Summary LSA - contains information about networks outside of the area

• Type 4: ASBR Summary LSA - describes the ASBR router to the rest of the OSPF domain

• Type...read more
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Q2. Static/ Default Routes
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Q3. BGP Attributes in detail
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BGP attributes are used to determine the best path for routing traffic between autonomous systems.
• BGP attributes include: AS Path, Next Hop, Local Preference, Weight, Multi-Exit Discriminator (MED), Origin, and Community

• AS Path is a list of autonomous systems that the route has passed through

• Next Hop is the IP address of the next router in the path

• Local Preference is used to indicate the preferred path for outbound tra...read more
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