20+ Integration Engineer Interview Questions and Answers

Estimate daily pizza consumption in Bangalore using population, preferences, and average pizza size.

• Determine the population of Bangalore (approx. 12 million).

• Estimate the percentage of pizza consumers (e.g., 10-20%).

• Calculate average pizza size (e.g., 14 inches diameter = 154 square inches).

• Estimate average consumption per consumer (e.g., 1 pizza per week).

• Multiply the number of consumers by average consumption to get total square footage.

I have extensive knowledge of Ericsson equipment, including its functionalities and applications in telecommunications.

• Familiar with Ericsson's RAN (Radio Access Network) solutions, such as the Ericsson Radio System.

• Experience with Ericsson's core network products, including the Evolved Packet Core (EPC).

• Knowledge of Ericsson's OSS (Operations Support Systems) for network management and optimization.

• Understanding of Ericsson's cloud solutions, like Ericsson Cloud Core and Clo...read more

Different file formats, REST vs SOAP, and protocols used in integrations

• File formats: JSON, XML, CSV, Excel, PDF

• REST vs SOAP: REST is lightweight, uses standard HTTP methods, stateless; SOAP is protocol-based, uses XML, more secure

• Protocols: HTTP, HTTPS, FTP, SFTP, SMTP, TCP/IP

The OSI model is a conceptual framework that standardizes the functions of a telecommunication or computing system into seven different layers.

• Layer 1 - Physical layer: Deals with physical connections and transmission of raw data. Example: Ethernet

• Layer 2 - Data link layer: Manages data transfer between devices on the same network. Example: MAC addresses

• Layer 3 - Network layer: Handles routing and forwarding of data packets. Example: IP addresses

• Layer 4 - Transport layer: Ens...read more

To fix a problem in Ericsson equipment while doing configuration, follow these steps:

• Identify the problem and its root cause

• Check the configuration settings and make necessary changes

• Perform a system reset if required

• Contact Ericsson support if the issue persists

• Ensure proper documentation and communication with stakeholders

Configuration of Ericsson equipment involves several steps.

• Access the equipment's configuration interface

• Identify the parameters to be configured

• Enter the appropriate values for each parameter

• Save the configuration changes

• Test the equipment to ensure proper functionality

Window functions are used to perform calculations across a set of rows in a table, while analytical functions compute values based on a group of rows.

• Window functions include functions like ROW_NUMBER, RANK, and LAG.

• They are used to calculate running totals, moving averages, and cumulative sums.

• Analytical functions include functions like SUM, AVG, and COUNT.

• They are used to compute aggregate values within a group of rows.

We use a centralized document management system to handle complex situations and ensure smooth transition during location changes.

• We have a dedicated team responsible for managing and updating all documentation.

• We use a cloud-based document management system to ensure easy access and collaboration.

• During complex situations, we prioritize communication and documentation to ensure everyone is on the same page.

• When there is a location change, we ensure all documentation is updat...read more

HL7 has different segments for different types of information in a message.

• PID - Patient Identification

• PV1 - Patient Visit Information

• OBX - Observation/Result

• ORC - Common Order

• MSH - Message Header

A table with foreign keys and primary keys is created to establish relationships between tables.

• Foreign keys are used to link a column in one table to the primary key of another table.

• Primary keys uniquely identify each record in a table.

• Foreign keys ensure referential integrity and maintain data consistency.

• Example: Creating a 'Orders' table with a foreign key 'customer_id' referencing the 'Customers' table's primary key.

The bands used for IX are frequency bands that are allocated for internet exchange points.

• IXPs use various frequency bands depending on the region and country.

• Commonly used bands include 2.4 GHz, 5 GHz, and 60 GHz.

• Some IXPs also use licensed frequency bands for higher reliability and security.

• The choice of bands depends on factors such as interference, distance, and capacity requirements.

Grep is a command-line utility for searching plain-text data sets for lines that match a regular expression.

• Use grep followed by the pattern you want to search for and the file(s) you want to search within

• Use the -i flag for case-insensitive search

• Use the -r flag for recursive search in directories

• Use the -v flag to invert the match and show lines that do not match the pattern

• Use the -o flag to only show the matched part of the line

List of 20 commonly used Linux commands for system integration engineers.

• ls - list directory contents

• cd - change directory

• pwd - print working directory

• cp - copy files and directories

• mv - move/rename files and directories

• rm - remove files and directories

• mkdir - create directories

• rmdir - remove directories

• cat - concatenate and display files

• grep - search text patterns

• chmod - change file permissions

• chown - change file ownership

• ps - display process status

• top - display and update s...read more

Find the largest sub string in a given string.

• Iterate through the string and check for all possible substrings

• Keep track of the length of each substring and update the maximum length found

• Return the largest substring found

5S practices involve daily meetings to ensure organization and efficiency in the workplace.

• Daily meetings are held to discuss progress, address issues, and plan for the day.

• These meetings help to ensure everyone is on the same page and working towards common goals.

• Examples of topics discussed include safety, quality, productivity, and improvement opportunities.

Setting daily targets helps in planning and achieving work efficiently.

• Break down larger tasks into smaller, manageable chunks

• Prioritize tasks based on importance and deadlines

• Allocate specific time slots for each task

• Regularly review and adjust daily targets as needed

LTE Call flow involves multiple steps for establishing and maintaining a connection between a mobile device and the network.

• UE sends a connection request to eNodeB

• eNodeB forwards the request to MME for authentication and authorization

• MME communicates with HSS for user authentication

• Once authenticated, MME assigns a temporary ID to UE and establishes a connection with eNodeB

• Data transfer occurs between UE and network through established connection

General Packet Radio Service

• GPRS stands for General Packet Radio Service

• It is a mobile data service that allows users to access the internet on their mobile devices

• GPRS uses packet switching technology to transmit data

• It is an evolution of the GSM network and provides faster data transfer speeds

• GPRS is commonly used for services like email, web browsing, and MMS

SQL query to retrieve all employees from a specific department

• Use SELECT statement to retrieve data

• Specify the columns to be retrieved

• Use WHERE clause to filter by department