TechVerito Senior Devops Engineer Interview Questions and Answers for Experienced

Answers to questions related to software engineering concepts.

• Volatile is a keyword used to indicate that a variable's value can be changed unexpectedly.

• Constant is a keyword used to indicate that a variable's value cannot be changed once it is assigned.

• Volatile and const can be used together to indicate that a variable's value cannot be changed and that it may change unexpectedly.

• ISR stands for Interrupt Service Routi...read more

A pointer is a variable that stores the memory address of another variable. Dangling, null, and void pointers are types of pointers.

• Dangling pointer: a pointer that points to a memory location that has been deallocated or freed

• Null pointer: a pointer that does not point to any memory location

• Void pointer: a pointer that has no specific data type and can point to any data type

Storage classes in C define the scope and lifetime of variables.

• auto: default storage class for local variables

• register: stores variables in CPU registers for faster access

• static: retains value between function calls

• extern: used to access global variables across multiple files

CAN data frame is a message format used in Controller Area Network (CAN) protocol.

• CAN data frame consists of 7 fields: Start of Frame (SOF), Arbitration ID, Control Bits, Data Length Code (DLC), Data Field, Cyclic Redundancy Check (CRC), and End of Frame (EOF).

• The Arbitration ID field is used to identify the message priority and the source of the message.

• The Data Field can contain up to 8 bytes of data.

• The CRC field is...read more

Master-slave architecture is a design pattern where one device or process controls one or more other devices or processes.

• Master device/process controls the slave device/process

• Master device/process is responsible for distributing tasks to the slave devices/processes

• Slave devices/processes report back to the master device/process

• Commonly used in distributed computing, database replication, and networking

• Examples includ...read more

Jenkins is an open-source automation server that helps to automate parts of the software development process.

• Jenkins is used for continuous integration and continuous delivery (CI/CD) pipelines.

• It can be configured to automatically build, test, and deploy code changes.

• Jenkins supports a wide range of plugins that can be used to extend its functionality.

• It can be integrated with other tools such as Git, Docker, and AWS.

• ...read more

Auto scaling and load balancing are AWS services that help in managing traffic and scaling resources automatically.

• Auto Scaling helps in automatically adjusting the number of EC2 instances based on traffic demand.

• Load Balancing helps in distributing traffic across multiple EC2 instances.

• Auto Scaling and Load Balancing work together to ensure that the application is highly available and can handle sudden spikes in traff...read more