Data Transmission Modes and Characteristics

The video tutorial explores data transmission methods, covering simplex, half duplex, and full duplex modes. It discusses serial and parallel transmission, highlighting their differences and challenges, such as skew in parallel transmission. The tutorial emphasizes understanding these concepts for exams.

What are the three essential factors to consider in data transmission?

• Speed, distance, and cost

• Direction, method, and synchronization

• Distance, direction, and cost

• Security, reliability, and speed

In which mode does data travel in only one direction?

• Full-duplex

• Half-duplex

• Simplex

• Bidirectional

Which data transmission mode allows data to travel in both directions but not simultaneously?

• Serial

• Simplex

• Half-duplex

• Full-duplex

What is a characteristic of full-duplex transmission?

• Data travels over a single cable

• Data travels in both directions but not at the same time

• Data travels in both directions simultaneously

• Data travels in one direction only

How are individual bits of data sent in serial transmission?

• Simultaneously down multiple cables

• One at a time down a single cable

• In groups of eight

• In parallel with other data

Which type of transmission is commonly used with USB interfaces?

• Half-duplex

• Simplex

• Parallel

• Serial

What is a disadvantage of parallel transmission?

• It is more expensive than serial transmission

• It can only be used over very short distances

• It is less reliable over long distances

• It is slower than serial transmission

What problem can occur with parallel transmission due to imperfections in wires?

• Skew

• Latency

• Jitter

• Echo

Why are parallel cables not commonly used anymore?

• They are not compatible with modern devices

• They are too expensive

• They have lower transmission speeds

• They are only suitable for short distances

What is the main reason serial transmission is preferred over parallel for longer distances?

• Better reliability

• Higher speed

• Lower cost

• More channels