The Jaypee Group Senior Field Engineer Interview Questions and Answers

HDD stands for Hard Disk Drive.

• HDD is a data storage device used in computers and other electronic devices.

• It uses magnetic storage to store and retrieve digital information.

• HDDs are commonly used for long-term storage of files, programs, and operating systems.

• They have spinning disks called platters that store data using read/write heads.

• HDDs are slower than solid-state drives (SSDs) but offer larger storage capacitie

AIDL stands for Android Interface Definition Language, used for inter-process communication in Android.

• AIDL is used to define the interface between client and service in Android.

• It allows communication between different processes in Android.

• AIDL is used to pass complex data types between processes.

• AIDL is similar to Remote Procedure Call (RPC) in other programming languages.

• Example: AIDL is used in Android to implement...read more

Hash set and hash map are data structures used to store key-value pairs for efficient retrieval.

• Hash set stores unique values without any specific order.

• Hash map stores key-value pairs and allows fast retrieval of values based on keys.

• Both use hashing to map keys to their corresponding values.

• In Java, HashSet and HashMap are implementations of these data structures.