Immediate hiring for TAC L1 Network Engineers @Movate - Chennai, Ambit IT Park
Interested candidates inbox your resumes to [Confidential Information]
Designation: Engineer – Networking
Role: L1 Engineer
Exp - Min 2 years(Mandate)
Location: Chennai (Ambit IT Park)
Shifts: Flexible to work in Night Shifts
Any Degree Mandatory
Excellent Communication Skills
Notice - Immediate/ 15 days
Job Responsibility:
- Troubleshoot/Diagnose all Level 1 issues from the customers and driving satisfactory resolution of the issues.
- Troubleshoot Product, Codes and Configuration issues
- Ensure consistent customer satisfaction
- Document all communication with customers in the CRM
- Interface with international customers (via Phone Support)
- Timely handoff (escalation) of cases that require technical or political to L2 TAC
Primary Skills:
- OSI layers – detailed understanding of each layer's function and relevant protocols that operates at each level
- TCP/IP – thorough understanding and clear explanation about windowing/handshake mechanism
- MAC header structure and use of each fields
- IP header structure and use of each fields
- ARP – how ARP works in a Layer 2 and Layer 3 communication
- Mac address table fields and how a switch uses MAC table for switching decisions
- ARP table and how a switch uses ARP table
- Routing Table fields and how a Router uses routing table for routing decisions
- DHCP protocol messages (clear understanding of DORA process)
- DHCP operation in layer 2 and layer 3 scenarios (server & client in same vlan or different VLAN)
- thorough understanding of Broadcast domain and Collision Domain
- thorough understanding of Unicast, Multicast and Broadcast traffic
- thorough understanding of Subnetting, Vlan, VTP, 802.1q, STP, Linkage
- thorough understanding of RIP (version 1 and 2) and OSPF (link states, LSA types, area types, router types, neighbor communication)
- Difference between Routing and Routed protocols
- Good troubleshooting approach (from Level 1 to 7 of OSI)
- How ARP learns the mac address in same subnet and different subnet
- Difference between hub,layer2 switch and layer 3 switch and router
- DHCP DORA process sender IP,mac and port number and destination IP,mac and port number
- OSI: how to troubleshoot in network with help of OSI model.
- Data link header
- Ip header
- TCP header
Look into Wireshark capture
1:ARP learning process and it's flavour
2:How switch learns the mac address
3: DHCP server and Client communication in same network and different network
4:OSI headers
Protocol and port number working
OSI layer model and its learning of encapsulation and decapsulation
5: IP Addressing and Subnetting
6: Difference between layer two and three switch
Thanks,
Deepu
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