What is the frequency bandwidth of Cat 5e cable?

What is the frequency bandwidth of Cat 5e cable?

• A. 50 MHz
• B. 1000 MHz
• C. 250 MHz
• D. 100 MHz

Answer: (D)

The key idea is how much of the frequency spectrum the cable can carry reliably. The bandwidth rating is the highest frequency at which the cable maintains acceptable signal quality, including low attenuation and minimal crosstalk. Cat5e cables are designed to handle signals up to about 100 MHz. That 100 MHz limit is what enables 1 Gbps Ethernet over 100 meters when all four twisted pairs are used with the appropriate signaling scheme. Numbers like 50 MHz are below Cat5e’s capability, 250 MHz is typical of Cat6/6a, and 1000 MHz belongs to higher-grade cables such as Cat6a/Cat7. So the frequency bandwidth of Cat5e is 100 MHz.

The key idea is how much of the frequency spectrum the cable can carry reliably. The bandwidth rating is the highest frequency at which the cable maintains acceptable signal quality, including low attenuation and minimal crosstalk. Cat5e cables are designed to handle signals up to about 100 MHz. That 100 MHz limit is what enables 1 Gbps Ethernet over 100 meters when all four twisted pairs are used with the appropriate signaling scheme. Numbers like 50 MHz are below Cat5e’s capability, 250 MHz is typical of Cat6/6a, and 1000 MHz belongs to higher-grade cables such as Cat6a/Cat7. So the frequency bandwidth of Cat5e is 100 MHz.