Which of the following techniques is used by digital satellites to relay messages?
The correct answer is B: Store-and-forward. Which of the following techniques is used by digital satellites to relay messages is store-and-forward. Digital satellites use store-and-forward to relay messages. For amateur radio operators, this is important for satellite operation. Understanding this helps when using digital satellites.
Exam Tip
Digital satellites relay messages = store-and-forward. Think 'D'igital 'S'atellites = 'D'elay 'S'tore-and-forward. Digital satellites use store-and-forward to relay messages. Not digipeating, not multisatellite relaying, not node hopping - just store-and-forward.
Memory Aid
"Digital satellites relay messages = store-and-forward. Think 'D'igital 'S'atellites = 'S'tore-and-forward. Digital satellites use store-and-forward to relay messages. Important for satellite operation."
Real-World Application
Digital satellites relay messages: They use store-and-forward - the satellite receives a message, stores it, and forwards it when the destination is in range. This is different from digipeating (terrestrial packet) or node hopping (mesh networks). Store-and-forward is the technique used by digital satellites to relay messages.
Key Concepts
Why Other Options Are Wrong
Option A (Digipeating): Incorrect. Digipeating is used in terrestrial packet radio, not digital satellites - satellites use store-and-forward. Digipeating isn't used.
Option C (Multisatellite relaying): Incorrect. Multisatellite relaying isn't the primary technique - store-and-forward is the technique. Multisatellite relaying isn't the answer.
Option D (Node hopping): Incorrect. Node hopping is used in mesh networks, not digital satellites - satellites use store-and-forward. Node hopping isn't used.
题目解析
The correct answer is B: Store-and-forward. Which of the following techniques is used by digital satellites to relay messages is store-and-forward. Digital satellites use store-and-forward to relay messages. For amateur radio operators, this is important for satellite operation. Understanding this helps when using digital satellites.
考试技巧
Digital satellites relay messages = store-and-forward. Think 'D'igital 'S'atellites = 'D'elay 'S'tore-and-forward. Digital satellites use store-and-forward to relay messages. Not digipeating, not multisatellite relaying, not node hopping - just store-and-forward.
记忆口诀
Digital satellites relay messages = store-and-forward. Think 'D'igital 'S'atellites = 'S'tore-and-forward. Digital satellites use store-and-forward to relay messages. Important for satellite operation.
实际应用示例
Digital satellites relay messages: They use store-and-forward - the satellite receives a message, stores it, and forwards it when the destination is in range. This is different from digipeating (terrestrial packet) or node hopping (mesh networks). Store-and-forward is the technique used by digital satellites to relay messages.
错误选项分析
Option A (Digipeating): Incorrect. Digipeating is used in terrestrial packet radio, not digital satellites - satellites use store-and-forward. Digipeating isn't used. Option C (Multisatellite relaying): Incorrect. Multisatellite relaying isn't the primary technique - store-and-forward is the technique. Multisatellite relaying isn't the answer. Option D (Node hopping): Incorrect. Node hopping is used in mesh networks, not digital satellites - satellites use store-and-forward. Node hopping isn't used.
知识点
Digital satellites, Relay messages, Store-and-forward, Message relaying
Verified Content
Question from official FCC Extra Class question pool. Explanation reviewed by licensed amateur radio operators.