Which statement about EMI is true?

Which statement about EMI is true?

• A. EMI affects wireless signals
• B. EMI strengthens network signals
• C. EMI affects only wired networks
• D. EMI never affects network communications

Answer: (A)

EMI stands for electromagnetic interference, which are disturbances from electromagnetic energy that disrupt signal transmission. In networks, EMI can degrade performance by adding noise to the signal. For wireless networks, EMI from devices like microwaves, cordless phones, or other nearby electronics can interfere with the radio waves used to carry data, causing slower speeds, errors, or dropped connections. This makes the statement that EMI affects wireless signals true. The other options don’t fit because EMI does not strengthen signals, it can affect both wired and wireless networks (not just one or the other), and it certainly can impact network communications, not never.

EMI stands for electromagnetic interference, which are disturbances from electromagnetic energy that disrupt signal transmission. In networks, EMI can degrade performance by adding noise to the signal. For wireless networks, EMI from devices like microwaves, cordless phones, or other nearby electronics can interfere with the radio waves used to carry data, causing slower speeds, errors, or dropped connections. This makes the statement that EMI affects wireless signals true. The other options don’t fit because EMI does not strengthen signals, it can affect both wired and wireless networks (not just one or the other), and it certainly can impact network communications, not never.