L2 Network Engineer with Exp in Routing Switching, networking experience

Routing/Switching

Q1. What is the difference between iBGP and eBGP?
Ans: iBGP runs between Routers in the same AS, while eBGP runs between Routers in different ASes.

Q2. What are the various states in BGP?

Ans: Idle - Connect - Active - OpenSent - OpenConfirm - Established

Q. BGP Path attribute Inbound and Outbound direction traffic manipulation (ebgp neighborship traffic manipulstion 3 ways )

Q3. What are the various states in OSPF?

Ans: Down Init or Attempt - Two-Way - ExStart - Exchange - Loading Full

Q4. What is full form of DR/BDR, NSSA?

Ans:
DR = Designated Router
BDR = Backup Designated Router
NSSA = Not-So-Stubby Area

Q5. What is the AD value of iBGP, eBGP, OSPF?

Ans: iBGP AD = 200
eBGP AD = 20
OSPF AD = 110

Q6. How to add VLAN on trunk link?

Ans: switchport trunk allowed VLAN add

Q7. Why STP is used in networks?

Ans: STP keeps the network stable by removing loops while still allowing backup paths for failover.

Q8. Why HSRP is used?

Ans: HSRP provides gateway redundancy by allowing multiple Routers to act as one virtual default gateway.

Q9: Give example of link-state protocol, and path-vector protocol.

Ans: OSPF is a link-state protocol, and BGP is a path-vector protocol.

Q10. How can we check the Cisco Router's uptime?

Ans: Command is show version.

F5 Basics

What is SNAT. in F5

Q11. What is the difference between a Pool Member and a Server in F5

Ans: A pool member is a specific IP address + port combination that the F5 load balances traffic to.
A server (node) is just the physical/virtual host's IP address-without the port.

Q12. What is VIP?

Ans: In F5, VIP stands for Virtual IP (Virtual Server).A VIP is the public-facing IP address that clients connect to, and the F5 load balancer then forwards the traffic to Back End pool members.

Key Responsibilities:

• Provide on-site technical support for network equipment, Servers, and related infrastructure in data centers and office environments.
• Design, implement, and support enterprise LAN, WAN, and DC networks
• Ensure high availability, performance, and security of network infrastructure
• Perform physical tasks such as cabling, racking, stacking, and replacing hardware components.
• Assist in network troubleshooting, including connectivity issues, hardware failures, and configuration support under remote guidance.
• Execute smart hands activities, including power cycling, patching, and device resets as per instructions from NOC or engineering teams.
• Maintain accurate documentation of activities, incidents, and changes performed on-site.
• Coordinate with remote network operations teams to resolve escalated issues promptly.
• Ensure compliance with customer security and operational standards during all activities.

Required Skills & Qualifications:

• L1/L2 experience in network operations and support or data center environments.
• Strong understanding of networks infrastructure (TCP/IP, routing, switching and dynamic routing protocols).
• Hands-on experience with network hardware (Routers, Switches, Firewalls) and cabling standards.
• Ability to work independently and follow detailed technical instructions from remote teams.
• Ability to work independently on the deployments and transformations.
• Familiarity with ticketing systems like ServiceNow and ITIL processes is a plus.
• Excellent communication and coordination skills.

Preferred Certifications:

• CCNA, CCNP and administrator level certification on other OEMs or equivalent networking certification.
• Data Center or hardware vendor certifications (eg, Dell, Cisco, HP) are an advantage.

Work Environment:

• On-site role at customer data centers and offices.
• May require flexible hours or on-call support for critical incidents.