What part of a packet radio frame contains the routing and handling information?
The correct answer is C: Header. The part of a packet radio frame that contains the routing and handling information is the header. Packet radio frames have headers with routing, addressing, and control information. For amateur radio operators, this is fundamental packet radio structure. Understanding this helps when operating packet radio.
Exam Tip
Packet frame routing/handling information = header. Think 'H'eader = 'H'as 'R'outing and 'H'andling information. Packet radio frames have headers with routing, addressing, and control information. Not directory, not preamble, not trailer - just header.
Memory Aid
"Packet frame routing/handling information = header. Think 'H'eader = 'H'as 'R'outing. Packet radio frames have headers with routing, addressing, and control information. Standard packet frame structure."
Real-World Application
A packet radio frame: The header contains routing information (destination address, source address), handling information (frame type, control bits), and other control data. The header is followed by the data payload and trailer (CRC). The header is where routing and handling information is stored.
Key Concepts
Why Other Options Are Wrong
Option A (Directory): Incorrect. Directory isn't a packet frame part - packet frames have header, data, and trailer, not directory. Directory isn't the term.
Option B (Preamble): Incorrect. Preamble is for synchronization, not routing/handling information - header contains routing information. Preamble is different.
Option D (Trailer): Incorrect. Trailer contains error checking (CRC), not routing/handling information - header contains routing information. Trailer is different.
题目解析
The correct answer is C: Header. The part of a packet radio frame that contains the routing and handling information is the header. Packet radio frames have headers with routing, addressing, and control information. For amateur radio operators, this is fundamental packet radio structure. Understanding this helps when operating packet radio.
考试技巧
Packet frame routing/handling information = header. Think 'H'eader = 'H'as 'R'outing and 'H'andling information. Packet radio frames have headers with routing, addressing, and control information. Not directory, not preamble, not trailer - just header.
记忆口诀
Packet frame routing/handling information = header. Think 'H'eader = 'H'as 'R'outing. Packet radio frames have headers with routing, addressing, and control information. Standard packet frame structure.
实际应用示例
A packet radio frame: The header contains routing information (destination address, source address), handling information (frame type, control bits), and other control data. The header is followed by the data payload and trailer (CRC). The header is where routing and handling information is stored.
错误选项分析
Option A (Directory): Incorrect. Directory isn't a packet frame part - packet frames have header, data, and trailer, not directory. Directory isn't the term. Option B (Preamble): Incorrect. Preamble is for synchronization, not routing/handling information - header contains routing information. Preamble is different. Option D (Trailer): Incorrect. Trailer contains error checking (CRC), not routing/handling information - header contains routing information. Trailer is different.
知识点
Packet radio frame, Header, Routing information, Handling information
Verified Content
Question from official FCC General Class question pool. Explanation reviewed by licensed amateur radio operators.