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Cisco TAC Engineer Interview Questions, Process, and Tips
Top Cisco TAC Engineer Interview Questions and Answers
- Q1. What are the new flags which RSTP BPDU's introduces?
- Q2. A user is unable to SSH the server, how do you troubleshoot this?
- Q3. What happens when you type google.com on your web browser?
Cisco TAC Engineer Interview Experiences
3 interviews found
I applied via Company Website and was interviewed in Jan 2023. There were 3 interview rounds.
(3 Questions)
- Q1. What are the new flags which RSTP BPDU's introduces?
- Ans.
RSTP BPDU introduces two new flags: TCN and Proposal.
TCN (Topology Change Notification) flag is used to indicate a topology change in the network.
Proposal flag is used to speed up the convergence process by allowing a switch to immediately transition to the forwarding state.
TCN flag is set by the root bridge and propagated to all switches in the network.
Proposal flag is set by a switch and sent to the root bridge.
Both ...
- Q2. A user is unable to SSH the server, how do you troubleshoot this?
- Ans.
To troubleshoot SSH issue, check network connectivity, firewall settings, SSH configuration, and user permissions.
Check if the server is reachable over the network
Verify if the SSH service is running on the server
Check if the firewall is blocking SSH traffic
Verify SSH configuration on the server
Check if the user has the necessary permissions to access the server
Check SSH logs for any errors or warnings
- Q3. Why ARP is used? Different types of ARP
- Ans.
ARP is used to map a network address (such as an IP address) to a physical address (such as a MAC address).
ARP stands for Address Resolution Protocol
It is used to resolve IP addresses to MAC addresses
There are two types of ARP: ARP Request and ARP Reply
ARP Request is used to find the MAC address of a device with a known IP address
ARP Reply is used to respond to an ARP Request with the MAC address of the device
ARP is im...
(3 Questions)
- Q1. What happens when you type google.com on your web browser?
- Ans.
When you type google.com on your web browser, it sends a request to Google's server and loads the website.
The browser sends a DNS request to resolve the domain name 'google.com' to an IP address
The browser establishes a TCP connection with Google's server
The browser sends an HTTP request to the server for the homepage of google.com
The server responds with the HTML code for the homepage
The browser renders the HTML code
- Q2. DNS query is resolved then TCP handshake and at last HTTP packets exchanged.
- Q3. Explain DORA process
- Ans.
DORA process is a four-step process used by DHCP to assign IP addresses to devices on a network.
DORA stands for Discover, Offer, Request, and Acknowledge.
Discover: The device sends a broadcast message to find available DHCP servers.
Offer: The DHCP server responds with an IP address offer.
Request: The device requests the offered IP address.
Acknowledge: The DHCP server acknowledges the request and assigns the IP address ...
Interview Preparation Tips
Skills evaluated in this interview
I applied via Job Portal and was interviewed in Jul 2021. There was 1 interview round.
Interview Questionnaire
2 Questions
- Q1. How to motivate a customer if case is on Escalation edge ?
- Ans.
Motivating a customer on escalation edge
Show empathy and understanding of their frustration
Provide regular updates on the progress of the case
Offer solutions or workarounds to mitigate the issue
Highlight the importance of resolving the issue for their business
Escalate the case to higher management if necessary
Thank them for their patience and cooperation
- Q2. Try to bring the priority down of the said case and work internally and spend time with the customer more it will help you alot to find the solutions.
Interview Preparation Tips
I applied via Approached by Company and was interviewed before Sep 2021. There were 4 interview rounds.
(1 Question)
- Q1. ++In depth understanding of basic networking and troubleshooting
(1 Question)
- Q1. ++Spanning tree and Troubleshooting of switching network
- Ans.
Explanation of Spanning Tree Protocol and troubleshooting techniques for switching networks.
Spanning Tree Protocol (STP) is used to prevent loops in a network by blocking redundant paths.
Troubleshooting STP involves checking for blocked ports, incorrect root bridge selection, and misconfigured priority values.
Other common issues in switching networks include VLAN mismatches, port security violations, and broadcast stor...
(1 Question)
- Q1. ++Normal HR discussion
Interview Preparation Tips
++Be confident
++Learn basic understanding of the protocols in depth
Skills evaluated in this interview
Top trending discussions
Interview questions from similar companies
(1 Question)
- Q1. Basics of networking to various scenario based questions
(1 Question)
- Q1. General discussion
Interview Preparation Tips
Network Engineer Interview Questions & Answers
Sterlite Technologies
Anonymous
posted on 30 Aug 2024
(2 Questions)
- Q1. Technical routing switch and mpls or more questions
- Q2. What is bgp, bgp is exchanging the routing information and prefix amoung the as number, bgp is border getaway protocol
- Ans.
BGP (Border Gateway Protocol) is a routing protocol used to exchange routing information between different autonomous systems (AS).
BGP is used to exchange routing information and prefixes between different AS numbers.
BGP helps in determining the best path for data to travel between networks.
BGP operates on TCP port 179.
BGP uses attributes like AS path, next hop, and local preference to make routing decisions.
Example: B...
Skills evaluated in this interview
GOPINATH M
(1 Question)
- Q1. Technical questions such as VLAN, Routing and Firewalls
(1 Question)
- Q1. How the team collaboration to improve business.
(1 Question)
- Q1. Company details and salary negotiation.
Interview Preparation Tips
As a experienced, go through more technical and scenario based questions.
I applied via Campus Placement and was interviewed in Apr 2023. There were 4 interview rounds.
Aptitude questions from various topics
Two coding questions easy and medium
(3 Questions)
- Q1. 1 hr technical from your resume and problem solving
- Q2. 3 sum problem question
- Q3. Basics of networking
(1 Question)
- Q1. Explain why you come into software role
Selected
I applied via Naukri.com and was interviewed in Jul 2023. There were 2 interview rounds.
(2 Questions)
- Q1. What is the telecom & what is the network
- Ans.
Telecom refers to communication over a distance using technology, while network refers to interconnected devices sharing resources and information.
Telecom involves transmitting data over long distances using various technologies like telephone lines, satellites, and fiber optics.
Network refers to a group of interconnected devices that can communicate and share resources, such as computers, servers, and printers.
Telecom...
- Q2. What is the telecom what is the network
- Ans.
Telecom refers to communication over a distance using various technologies, while a network is a collection of interconnected devices that can communicate with each other.
Telecom involves transmitting data over long distances using technologies like telephone lines, fiber optics, and satellites
Network refers to a collection of devices like computers, servers, and routers that are connected to each other to share resour...
Interview Preparation Tips
Skills evaluated in this interview
Manoj Kumar
Selected
I applied via Approached by Company and was interviewed before Dec 2023. There were 3 interview rounds.
(3 Questions)
- Q1. Introduction of Candidate.
- Q2. Basic and advance Skill.
- Q3. Qualification for the role and can fit it in with the team and company culture.
(2 Questions)
- Q1. Technical question regarding Enterprise voice?
- Q2. Multiple protocols and port numbers. Voice redirection using SBCs and routers.
(2 Questions)
- Q1. Salary expectations and CTC discussion.
- Q2. Required documentations of qualification and others. Offer letter offered.
(1 Question)
- Q1. Basics of networking to various scenario based questions
(1 Question)
- Q1. General discussion
Interview Preparation Tips
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Cisco TAC Engineer Interview Process
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Cisco TAC Engineer Reviews and Ratings
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