Which of the following is true of SITOR...

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Question 1 of 20CNoBiwjy5ZkuTPM4pRcS

Which of the following is true of SITOR (NBDP) ARQ mode?

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Question 1 of 20

CNoBiwjy5ZkuTPM4pRcS

Which of the following is true of SITOR (NBDP) ARQ mode?

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🔍 Key Concepts

• SITOR (Simplex Telex Over Radio) and how ARQ (Automatic Repeat reQuest) works • Difference between interactive (two-way) modes and broadcast (one-way) modes in radiotelex • How error detection/correction is handled in NBDP (Narrow Band Direct Printing) systems

💭 Think About

• Ask yourself: In ARQ mode, is there a back-and-forth exchange between two specific stations, or just a one-way transmission to many receivers? • Think about what ARQ stands for: why would the system need to ‘request’ anything again, and how would that affect how characters are sent? • Consider which mode (ARQ vs FEC) is normally associated with broadcasting the same message to multiple ships at once.

✅ Before You Answer

• Verify whether ARQ involves a two-station link with acknowledgements or a one-to-many broadcast. • Confirm how many times each character is actually transmitted in ARQ to allow for error checking (compare to FEC, where repetition is higher). • Check which mode is specifically used for broadcasting safety and routine messages: ARQ or FEC (Forward Error Correction).

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Question 1 of 20CNoBiwjy5ZkuTPM4pRcS

Which of the following is true of SITOR (NBDP) ARQ mode?

Back

Question 1 of 20

CNoBiwjy5ZkuTPM4pRcS

Which of the following is true of SITOR (NBDP) ARQ mode?

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

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