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I applied via Company Website and was interviewed in Jul 2019. There were 4 interview rounds.
LTE attach procedure is the process of a device connecting to the LTE network and obtaining an IP address.
The device sends an attach request to the LTE network.
The network validates the request and assigns a temporary identifier to the device.
The network sends an attach accept message to the device, which includes the assigned identifier and an IP address.
The device acknowledges the attach accept message and completes ...
CFRA and CBRA are different algorithms used in RACH. Success rates can be fetched separately.
CFRA stands for Contention Free RACH Algorithm, while CBRA stands for Contention Based RACH Algorithm.
CFRA is used for devices with higher priority, while CBRA is used for devices with lower priority.
Success rates for CFRA and CBRA can be fetched separately by analyzing the RACH logs.
CFRA success rate is usually higher than CBR
We ensure accessibility improvement in LTE network through various measures.
Conducting regular network audits to identify areas of improvement
Deploying small cells and repeaters to improve coverage in remote areas
Implementing carrier aggregation to increase network capacity
Providing network optimization services to improve network performance
Collaborating with device manufacturers to ensure compatibility with our netwo...
I analyze network data to identify areas with high PS drops and work on optimizing those areas.
Analyze network data to identify areas with high PS drops
Optimize network parameters such as RSRP, RSRQ, SINR, etc.
Check for interference and adjust antenna tilt and azimuth
Ensure proper handover parameters are set
Perform drive tests to validate improvements
Collaborate with other teams such as RF and Core to resolve issues
Imp...
I ensure proper parameter tuning, interference management, and capacity planning for LTE network throughput improvement.
Regularly monitor network KPIs to identify areas of improvement
Optimize network parameters such as handover parameters, antenna tilt, etc.
Implement interference management techniques such as interference coordination, power control, etc.
Perform capacity planning to ensure sufficient resources are avai...
HARQ & TTI Bundling are techniques used in wireless communication to improve data transmission efficiency.
HARQ stands for Hybrid Automatic Repeat Request and is used to improve the reliability of data transmission by retransmitting erroneous packets.
TTI Bundling stands for Transmission Time Interval Bundling and is used to reduce latency by transmitting multiple packets in a single transmission time interval.
The value ...
VoLTE e2e call flow is the process of establishing a voice call over LTE network.
The call is initiated by the user and the device sends a SIP invite message to the IMS network.
The IMS network authenticates the user and sends a SIP 180 ringing message to the device.
Once the called party answers, the IMS network sends a SIP 200 OK message to the device.
The device then sets up the media path and sends a SIP ACK message to...
SIP call flow in VoLTE involves signaling between UE, IMS, and PSTN networks.
UE sends INVITE message to IMS network
IMS network authenticates and authorizes the user
IMS network sends INVITE message to PSTN network
PSTN network sends ringing message to IMS network
IMS network sends ringing message to UE
When call is answered, media flow is established between UE and PSTN network
Call teardown involves exchange of BYE message
The mobile network operator has major involvement in SRVCC.
SRVCC stands for Single Radio Voice Call Continuity
It is a feature that allows a seamless handover of voice calls from LTE to 3G or 2G networks
The mobile network operator is responsible for implementing and supporting SRVCC
VoLTE uses various speech codecs for efficient voice transmission.
AMR-WB (Adaptive Multi-Rate Wideband) codec is widely used in VoLTE.
Other codecs used include EVS (Enhanced Voice Services), Opus, and G.711.
The choice of codec depends on factors such as network capacity, device compatibility, and call quality requirements.
I have worked on LTE & VoLTE features such as QoS, SRVCC, CSFB, TTI bundling, etc. and their related parameters.
QoS parameters such as ARP, QCI, GBR, MBR, etc.
SRVCC parameters such as HO margin, HO failure threshold, etc.
CSFB parameters such as timer values, RAT priority, etc.
TTI bundling parameters such as bundle size, bundle factor, etc.
VoLTE parameters such as AMR codec modes, RTP packetization, etc.
UE categories an...
There are 3 MCS (Modulation and Coding Schemes) in LTE.
MCS 1: QPSK modulation with coding rate of 1/2
MCS 2: 16QAM modulation with coding rate of 1/2
MCS 3: 64QAM modulation with coding rate of 2/3
Higher MCS values indicate higher modulation and coding rates
The selection of MCS depends on the channel quality and available bandwidth
FDD and TDD are two different duplexing techniques used in wireless communication networks.
FDD stands for Frequency Division Duplexing while TDD stands for Time Division Duplexing.
In FDD, separate frequency bands are used for uplink and downlink communication while in TDD, the same frequency band is used for both uplink and downlink communication.
FDD is commonly used in 3G and 4G networks while TDD is commonly used in ...
The maximum throughput in LTE network with 20MHz TDD bandwidth depends on various factors.
Theoretical maximum throughput is 1.6 Gbps
Practical maximum throughput is around 1 Gbps
Actual throughput depends on factors like signal strength, interference, number of users, etc.
Carrier aggregation and MIMO can increase throughput
Real-world throughput can be measured using tools like speedtest.net
I was interviewed in Jan 2025.
In my previous role, I was responsible for analyzing data, creating reports, and providing insights to support decision-making.
Performed data cleaning, transformation, and analysis using tools like Excel, SQL, and Python.
Generated reports and dashboards to visualize data trends and patterns.
Collaborated with cross-functional teams to identify key metrics and KPIs for business performance.
Presented findings and recommen...
I was responsible for data cleaning, transformation, and visualization to create interactive dashboards for stakeholders.
Performed data cleaning and transformation to ensure accuracy and consistency of data
Utilized tools like SQL, Python, and Tableau to manipulate and visualize data
Collaborated with stakeholders to understand their requirements and design interactive dashboards
Generated insights from data analysis to d
I optimize and manage large datasets by using tools like SQL, Python, and Excel. I utilize various data sources such as databases, APIs, and web scraping.
Utilize SQL queries to efficiently extract and manipulate data from databases
Use Python for data cleaning, analysis, and visualization tasks
Leverage Excel for organizing and summarizing data in a user-friendly format
Obtain data from sources like internal databases, ex
There are approximately 500-600 traffic signals in Noida.
Estimate based on the size and population of Noida
Consider the number of major intersections and roads in the city
Take into account the traffic density and need for traffic management
Consult local traffic authorities for more accurate data
Vode dump copy then Extract again merge then ..
ALTER command is used to modify the structure of a database table.
ALTER command can be used to add, modify, or drop columns in a table.
It can also be used to rename a table or change its data type.
Example: ALTER TABLE table_name ADD column_name datatype;
I was interviewed in Jan 2025.
I live at 123 Main Street, Anytown, USA.
Provide full address including street number, street name, city, and country
Be clear and concise in your response
Avoid giving unnecessary details such as apartment number or zip code unless specifically asked
My name is John Smith.
Full name is John Smith
Common name in English-speaking countries
Easy to remember and pronounce
My favorite color is blue because it reminds me of the calming ocean and clear skies.
Blue is associated with tranquility and peace
It symbolizes trust, loyalty, and confidence
Examples: navy blue, sky blue, royal blue
Bharti Airtel interview questions for popular designations
SoftAssert allows test execution to continue after assertion failure, while HardAssert stops test execution.
SoftAssert is used when you want to continue executing the test even after an assertion failure.
HardAssert is used when you want to stop the test execution immediately after an assertion failure.
SoftAssert is commonly used in test automation frameworks like TestNG and JUnit.
HardAssert is commonly used in manual t
Use Set to find unique element in array without loop
Convert array to Set to remove duplicates
Convert Set back to array to find unique element
Use SCP command to copy file from one server to another
Use SCP command with source file path and destination server address
Ensure proper permissions are set on both servers
Example: scp /path/to/file user@destination_server:/path/to/destination
Get interview-ready with Top Bharti Airtel Interview Questions
I applied via Company Website and was interviewed in Dec 2024. There were 2 interview rounds.
What is aptitude test?
A technical test is an assessment used to evaluate a candidate's technical skills and knowledge in a specific field.
Technical tests can include coding challenges, troubleshooting scenarios, and practical tasks.
They are often used by employers to determine a candidate's proficiency and suitability for a particular role.
Technical tests can be timed or untimed, and may be conducted online or in person.
Examples of technica...
posted on 15 Jan 2025
I have a Bachelor's degree in Business Administration with a focus on sales and marketing.
Studied Business Administration with a focus on sales and marketing
Completed Bachelor's degree
Took courses in sales strategies and market analysis
My greatest strength is my ability to build strong relationships with clients and colleagues.
Excellent communication skills
Strong interpersonal skills
Ability to understand and meet the needs of clients
Proven track record of successful client relationships
I worked at a financial organization where I monitored and ensured the sanity of applications related to the share market.
Monitored real-time performance of share market applications
Identified and resolved application issues to ensure smooth operation
Collaborated with development team to implement enhancements for better performance
Conducted regular system checks and maintenance tasks
Provided technical support to end-u
I applied via LinkedIn and was interviewed in Nov 2024. There were 4 interview rounds.
Sanjeev Kumar adharpur
Sanjeev Kumar
Aadhar pur
I applied via Naukri.com
My shelf is organized with books, plants, and decorative items.
I have separate sections for fiction and non-fiction books.
I also have space for my plant collection, with each plant getting enough sunlight.
I like to display decorative items like candles and small sculptures on the shelf.
I keep my favorite books within easy reach for quick access.
I joined Bharti Airtel because of its reputation for innovation, growth opportunities, and strong presence in the telecommunications industry.
Bharti Airtel is known for its innovative solutions in the telecommunications sector
The company offers great growth opportunities for career advancement
Bharti Airtel has a strong presence in the industry, providing stability and opportunities for learning and development
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