220-1201 Practice Question: A small office uses a cable internet connection…

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

• ✗

  The modem's firmware is out of date.

  Why it's wrong here

  Outdated modem firmware typically causes consistent connectivity issues, random disconnections, or complete failure to establish a connection, rather than performance degradation specifically tied to peak usage hours. The operational logic of the firmware does not inherently change or become less efficient solely due to increased network traffic from external sources during specific times of the day. Therefore, while firmware updates are important for security and stability, an outdated version would not predictably manifest as slowdowns only in the evening.

• ✗

  The office's router is overheating.

  Why it's wrong here

  An overheating router would exhibit performance issues, such as intermittent connectivity, frequent reboots, or complete failure, regardless of the time of day or external network load. The internal temperature of a router is primarily influenced by its internal component activity, ambient room temperature, and airflow, not by the time-dependent external network congestion. If overheating were the cause, the problems would likely be constant once the critical temperature is reached, or occur randomly, not exclusively during evening peak hours.

• ✓

  Neighborhood congestion from shared bandwidth.

  Why this is correct

  Cable internet connections utilize a shared local loop, meaning that multiple subscribers in a neighborhood share the same segment of coaxial cable infrastructure back to the Internet Service Provider's (ISP) Cable Modem Termination System (CMTS). During peak evening hours, when a large number of neighbors are simultaneously streaming high-definition content, gaming online, or downloading large files, the available bandwidth on this shared segment becomes saturated. This increased demand leads to significant network congestion, resulting in noticeable slowdowns and reduced speeds for all users on that segment.

• ✗

  The ISP is performing maintenance every evening.

  Why it's wrong here

  Internet Service Providers (ISPs) schedule network maintenance during off-peak hours, typically late at night or early morning, to minimize disruption to their customer base. Performing maintenance every single evening during peak usage times would be highly disruptive, lead to widespread customer dissatisfaction, and potentially violate service level agreements (SLAs). Therefore, daily evening maintenance is an extremely improbable and economically unfeasible cause for consistent peak-hour internet slowdowns.

Go deeper

Related to this question