Headend Engineer Interview Questions and Answers

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

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.

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

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.