Black Box Corporation Graduate Engineer Interview Questions and Answers

Basic aptitude questions
Maths question
Electronics question
Communication question from engineering

Q1. What is the difference between ipv4 and ipv6
Ans. 
IPv4 uses 32-bit addresses while IPv6 uses 128-bit addresses, allowing for more unique addresses in IPv6.
• IPv4 uses 32-bit addresses while IPv6 uses 128-bit addresses

• IPv IPv4 supports 4.3 billion unique addresses while IPv6 supports 340 undecillion unique addresses

• IPv4 uses decimal notation for addresses (e.g. 192.168.1.1) while IPv6 uses hexadecimal notation (e.g. 2001:0db8:85a3:0000:0000:8a2e:0370:7334)

• IPv6 has built-...read more
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Q2. What is osi model and explain it
Ans. 
The OSI model is a conceptual framework that standardizes the functions of a telecommunication or computing system into seven different layers.
• The OSI model stands for Open Systems Interconnection model.

• It helps in understanding how different networking protocols work together.

• The seven layers are: Physical, Data Link, Network, Transport, Session, Presentation, and Application.

• Each layer has specific functions and comm...read more
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Q3. How does data flow trough osi model
Ans. 
Data flows through OSI model in a structured manner through different layers.
• Data is encapsulated into frames at the Application layer

• Frames are then segmented into packets at the Transport layer

• Packets are further divided into segments at the Network layer

• Segments are converted into bits at the Data Link layer

• Bits are transmitted physically through the network at the Physical layer
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Q1. What is the salary wanted
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