10 Physical Layer Interview Questions and Answers
Prepare for your interview with these 10 key Physical Layer questions and answers. Master the fundamentals for engineering and job success.
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Prepare for your interview with these 10 key Physical Layer questions and answers. Master the fundamentals for engineering and job success.
Explore the benefits and drawbacks of 4B/5B block coding for digital data representation, including synchronization improvements and signal rate considerations.
Explore the benefits and drawbacks of 4D-PAM5 (Four-Dimensional Five-Level Pulse Amplitude Modulation) line coding, its applications, and limitations.
Learn about 4G LTE packet loss rate, its calculation, causes, and impact on network performance. Understand the formula and target rates.
Explore the benefits and drawbacks of 8B/10B block coding, including disparity control, error detection, overhead, and performance compared to 4B/5B.
Explore the benefits and drawbacks of 8B6T line coding, a multilevel scheme converting 8 data bits into 6 signal elements. Understand its role in 100Base-4T cables.
Understand the distinctions between Active, Passive, and Hybrid GPS systems, focusing on data transmission methods and real-time tracking capabilities.
Explore the pros and cons of using network switches in a network. Understand the benefits and drawbacks, basic functionality, and potential security concerns.
Explore the benefits and drawbacks of wireless communication systems, including mobility, cost, security, and potential interference.
Explore the diverse applications of QPSK modulation in cellular networks, satellite communication, Wi-Fi, and more. Learn how QPSK balances spectral efficiency and robustness for high-speed data transmission.
Explore the advantages and disadvantages of Asynchronous Transfer Mode (ATM) technology, including its traffic support, overhead, and cost implications.
Explore the distinctions between asynchronous protocols, using start/stop bits, and synchronous protocols, employing SYN characters, with examples like Xmodem and Bisync.
Explore the differences between B3ZS and B8ZS line coding techniques, including their applications and how they prevent excessive zeros in data transmission.
Explore the advantages and disadvantages of Binary Phase Shift Keying (BPSK) modulation, including its robustness and power efficiency, alongside its limitations in data rate and bandwidth efficiency.
Explore the pros and cons of coaxial cable for data transmission. Learn about its structure, types, benefits, and limitations in modern communication systems.
Explore the distinct roles of codecs and modems in telecommunications, focusing on their functions in data compression and signal modulation for efficient communication.
Understand the distinctions between concentrators and multiplexers in communication systems. Learn how they differ in function and application for efficient data transmission.
Python code implementing a differential encoder and decoder using modulo-2 sum and delay, for binary data transmission and error correction.
Prepare for digital communication job interviews with this comprehensive Q&A guide covering modulation, encoding, error handling, and key protocols.
Explore a detailed comparison of DOCSIS 3.0, 3.1, and 4.0, including features, speeds, and benefits of each Data Over Cable Service Interface Specification.
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