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I applied via Naukri.com and was interviewed in Nov 2022. There was 1 interview round.
ARP is used to map IP addresses to MAC addresses on a local network.
ARP stands for Address Resolution Protocol.
It is used to find the MAC address of a device based on its IP address.
ARP is essential for communication between devices on the same network.
ARP cache stores the mapping of IP addresses to MAC addresses for faster communication.
Example: When a computer wants to communicate with another device on the network, ...
HSRP, VRRP, and GLBP are all protocols used for providing redundancy in network environments.
HSRP (Hot Standby Router Protocol) is Cisco's proprietary protocol for providing high availability by allowing two or more routers to work together in a group.
VRRP (Virtual Router Redundancy Protocol) is an open standard protocol similar to HSRP, used for providing a virtual IP address that can be shared among multiple routers.
...
Root bridge election in a network is determined by the bridge ID and the lowest path cost to the root bridge.
Root bridge is the bridge with the lowest bridge ID in the network.
Bridge ID consists of a priority value and a MAC address.
If two bridges have the same priority, the bridge with the lowest MAC address will become the root bridge.
Each bridge calculates the path cost to the root bridge based on the cumulative cos...
I will troubleshoot network issues by following a systematic approach to identify and resolve the root cause.
Start by gathering information about the issue reported
Check physical connections and cables
Verify network configurations and settings
Use network monitoring tools to identify any anomalies
Isolate the issue by testing connectivity between devices
Check for any network congestion or bandwidth issues
Consult network ...
STP (Spanning Tree Protocol) is a network protocol that ensures a loop-free topology in Ethernet networks.
STP prevents loops in Ethernet networks by blocking redundant paths.
It elects a root bridge to serve as the central point for the network.
STP uses Bridge Protocol Data Units (BPDUs) to exchange information between switches.
Common STP states include Blocking, Listening, Learning, Forwarding, and Disabled.
STP converg...
DHCP process involves four steps: Discover, Offer, Request, Acknowledge (DORA).
Discover: Client broadcasts a DHCP Discover message to find available DHCP servers.
Offer: DHCP server responds with a DHCP Offer message containing IP address lease information.
Request: Client sends a DHCP Request message to request the offered IP address.
Acknowledge: DHCP server sends a DHCP Ack message confirming the IP address lease to th
The OSI model is a conceptual framework that standardizes the functions of a telecommunication or computing system into seven different layers. TCP/IP is a protocol suite that is used for communication over the internet.
OSI model has 7 layers: Physical, Data Link, Network, Transport, Session, Presentation, Application
TCP/IP is a protocol suite that includes TCP (Transmission Control Protocol) and IP (Internet Protocol)
...
Subnetting is the process of dividing a network into smaller subnetworks to improve performance and security.
Subnetting helps in optimizing network performance by reducing network congestion.
It allows for better organization and management of IP addresses.
Subnetting enhances network security by isolating different parts of the network.
Example: Dividing a large network into smaller subnets based on departments or locati
VSF and VSX are both technologies used in networking for virtualization and redundancy, but they have key differences in terms of implementation and capabilities.
VSF (Virtual Switching Framework) is used in HPE Aruba switches to create a single logical switch from multiple physical switches, providing redundancy and scalability.
VSX (Virtual Switching Extension) is used in Cisco Nexus switches to create a virtual chassi...
ACL stands for Access Control List and is used to control network traffic by allowing or denying packets based on defined rules.
ACLs can be used to filter traffic based on source or destination IP address, protocol, port number, etc.
They can be applied on routers, switches, and firewalls to control access to network resources.
ACLs can improve network security by restricting unauthorized access to sensitive data.
Example...
To upgrade firmware, you need to download the latest firmware version from the manufacturer's website and follow the specific instructions provided.
Download the latest firmware version from the manufacturer's website
Backup current configuration before upgrading
Follow specific instructions provided by the manufacturer
Test the new firmware in a controlled environment before deploying it in production
To configure SSID, access the wireless router's settings and enter the desired network name, security type, and password.
Access the wireless router's settings through a web browser
Locate the wireless settings section
Enter the desired SSID (network name)
Select the appropriate security type (WPA2, WEP, etc.)
Set a strong password for the network
Save the changes and restart the router if necessary
To configure 802.1x protocol, you need to set up authentication servers, configure network devices, and define access policies.
Set up authentication servers such as RADIUS or TACACS+
Configure network devices (switches, routers, wireless access points) to support 802.1x
Define access policies for different user roles and devices
Enable 802.1x on network ports and specify authentication methods (EAP-TLS, PEAP, etc.)
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I applied via Approached by Company and was interviewed before May 2017. There were 6 interview rounds.
I applied via Naukri.com and was interviewed in Mar 2020. There was 1 interview round.
As an Education Counselor of a leading ad-tech MNC, I would manage real-life situations with professionalism and empathy.
I would listen actively to the concerns of clients and provide tailored solutions.
I would maintain a positive and proactive attitude towards challenges.
I would stay up-to-date with industry trends and developments to provide the best advice.
I would prioritize building strong relationships with client...
Generic collections provide type safety and reusability in software development.
Generic collections allow us to store and manipulate objects of any type in a type-safe manner.
They provide compile-time type checking, reducing the chances of runtime errors.
They promote code reusability by allowing the same collection to be used with different types.
Generic collections improve performance by eliminating the need for boxin...
I applied via Other and was interviewed in Feb 2018. There were 4 interview rounds.
I was interviewed before May 2016.
I was interviewed before Mar 2016.
I was interviewed in Sep 2016.
Cognizant offers a diverse range of opportunities for growth and development in the IT industry.
Cognizant is a global leader in IT services and consulting.
They have a strong reputation for delivering high-quality solutions to clients.
Cognizant provides a collaborative and inclusive work environment.
They offer extensive training and learning programs to enhance skills.
Cognizant has a strong focus on innovation and digit...
My goal in life is to make a positive impact on others and contribute to the betterment of society.
To work towards improving healthcare access and quality
To advocate for social justice and equality
To continuously learn and grow both personally and professionally
To build meaningful relationships and support others in their journeys
To leave a lasting legacy that inspires future generations
I resolved a disagreement between two team members by facilitating a meeting and encouraging open communication.
Identified the root cause of the disagreement
Scheduled a meeting with both parties to discuss the issue
Encouraged open communication and active listening
Facilitated a compromise that satisfied both parties
posted on 5 Sep 2017
I was interviewed in Aug 2017.
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Network Engineer
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