Headend Engineer

Headend Engineer Interview Questions and Answers

Updated 17 Aug 2023

Q1. What is HDMI and How does The cable tv network work

Ans.

HDMI stands for High-Definition Multimedia Interface. Cable TV network works by transmitting television signals through coaxial cables.

  • HDMI is a digital interface used for transmitting high-quality audio and video signals from a source device to a display device.

  • It supports high-definition video resolutions and digital audio formats.

  • Cable TV network works by distributing television signals through coaxial cables to subscribers' homes.

  • The signals are transmitted from a headend...read more

Q2. What is Ip Address and classes

Ans.

IP Address is a unique numerical label assigned to each device connected to a computer network.

  • IP Address stands for Internet Protocol Address.

  • There are five classes of IP Addresses: A, B, C, D, and E.

  • Each class has a different range of possible IP Addresses.

  • For example, Class A addresses range from 1.0.0.0 to 126.0.0.0.

Q3. Difference in Switch and Hub

Ans.

Switch forwards data to specific devices based on MAC address, while hub broadcasts data to all devices on the network.

  • Switch operates at the data link layer (Layer 2) of the OSI model, while hub operates at the physical layer (Layer 1).

  • Switch is more efficient as it only sends data to the intended recipient, reducing network congestion.

  • Hub is a passive device that simply repeats incoming data to all connected devices, leading to potential security risks.

  • Example: A switch wou...read more

Q4. Explain OSI TCP IP Model

Ans.

The OSI TCP/IP model is a conceptual framework used to understand how data is transmitted over a network.

  • The OSI model has 7 layers, each with specific functions and protocols.

  • The TCP/IP model combines the OSI model's top 4 layers into a single layer.

  • Examples of protocols in the TCP/IP model include TCP, IP, UDP, and ICMP.

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