Megha Engineering & Infrastructures Senior Security Supervisor Interview Questions and Answers

Glass is a solid, transparent material made by heating a mixture of silica and other materials.

• Glass is a non-crystalline, amorphous solid

• It is made by heating a mixture of silica, soda ash, and lime

• It can be molded into various shapes and sizes

• It is used in windows, mirrors, lenses, and containers

• Different types of glass include tempered, laminated, and stained glass

Graphene is a thin layer of pure carbon arranged in a hexagonal lattice.

• It is the thinnest material known to man

• It is a good conductor of electricity and heat

• It is incredibly strong and flexible

• It has potential applications in electronics, energy, and medicine

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.