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Zorluk: OrtaUtilizing Hardware Testers and Packet Analyzers

A network technician suspects that an SFP transceiver port on a core switch has a faulty internal transmitter or receiver circuit. The technician wants to verify whether the physical port is capable of transmitting and receiving frames without connecting the switch to another active network device or external patch cable. Which hardware tool should the technician insert into the port to perform this isolation test?

  1. Loopback plugCevap
  2. B
    Cable certifier
  3. C
    Tone generator and probe kit
  4. D
    Packet analyzer

Cevap

The correct tool to test a switch port's internal transmit and receive functionality in isolation is a loopback plug.
A loopback plug routes transmitted signals directly back into the receiving circuits of the local port. This allows network technicians to test whether the transceiver and port hardware are functional without relying on external cables or remote switches.

Adım Adım Çözüm

1
Identify the diagnostic requirement
The requirement is to isolate and test local interface transmit/receive hardware functions without using remote devices or cabling.
Determining hardware port integrity requires bypassing external network factors.
2
Evaluate hardware diagnostic tools against physical layer isolation capabilities
A loopback plug routes outgoing signals from the transmit pin directly into the receive pin on the exact same port.
This establishes a physical link state and enables interface self-testing.
3
Select the correct diagnostic tool
The loopback plug provides immediate feedback on whether the transceiver port electronics are functional.
Tools like certifiers or tone probes test external cabling, not internal port loopback circuitry.

Anahtar Kavram

Physical Port Diagnostics and Loopback Testing
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Konular

Utilizing Hardware Testers and Packet Analyzers

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