Data Communication Protocols Overview

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What is the primary form of bits in a copper-based network?

Light pulses
Electrical signals (correct)
Sound waves
Magnetic fields

Where do transmission media belong in the OSI model?

Layer 2
Layer 1 (correct)
Layer 3
Layer 4

Which type of media focuses more on signal characteristics than medium characteristics?

Wireless media (correct)
Wired media
Fibre optics
Copper wire

What property determines the data transmission rate based on a medium's characteristics?

Bandwidth (D) Signup and view all the answers

What is the term used to describe the process of disrupting a signal during its travel over a communication medium by adding unwanted signals?

Interference (A) Signup and view all the answers

What happens when the received signal differs from the transmitted signal due to various issues in transmission?

Signal degradation (C) Signup and view all the answers

What does the FC field in each 802.11 frame consist of?

Protocol version, Type, Sub-type, To distribution system, From distribution system, More fragments (A) Signup and view all the answers

What is the purpose of the Frame check sequence in 802.11 frames?

Verifying whether the data frame has arrived correctly (C) Signup and view all the answers

When the ACK frame doesn't appear, what action does the sender take?

Assumes a complication and resends the data packet (D) Signup and view all the answers

What does the 'More data' element in the FC field specify?

Specifies if more data should be sent (B) Signup and view all the answers

How is the receiver address field in an 802.11 frame utilized?

Holds the MAC address of the recipient (D) Signup and view all the answers

In an 802.11 frame, what is the function of the duration element in the FC field?

Specifies time needed for data transmission (D) Signup and view all the answers

Why is there a need for a protocol in a wireless network?

To regulate the use of the medium and avoid collisions (D) Signup and view all the answers

What is the main purpose of CSMA/CA in wireless networks?

To reduce the frequency of collisions and provide collision resolution (A) Signup and view all the answers

How does the hidden station problem arise in wireless networks?

As a result of limited range causing some stations not to recognize each other (A) Signup and view all the answers

Why is it important for all participants in a decentralized network to follow a set of rules?

To organize communication and prevent overlapping posts (B) Signup and view all the answers

What is the purpose of a wireless network protocol like CSMA/CA when compared to wired networks?

To limit the frequency of collisions and provide collision resolution plans (B) Signup and view all the answers

Why do wireless networks face more challenges related to station recognition compared to wired networks?

Due to technology differences leading to station limitations (D) Signup and view all the answers