What are two issues that affect the uptime of a network? (Choose two.)

Question

Options

• Aplanned outages
• Bpower current used
• CWAN failure
• Dpacket loss

• A
  80% (16)
• B
  10% (2)
• D
  10% (2)

Explanation

Planned outages (A) and WAN failure (C) are both direct causes of network downtime. Planned outages are scheduled maintenance windows where the network is intentionally taken offline, which still counts against uptime metrics. WAN failures are unplanned disruptions to wide-area network links, cutting off connectivity between sites or to the internet entirely.

Why the distractors are wrong:

• B (power current used) - Power consumption doesn't affect uptime; it's a capacity/cost concern. A power outage would matter, but "power current used" is not an uptime issue.
• D (packet loss) - Packet loss degrades performance and quality, but the network is still technically "up." Uptime measures availability, not reliability or speed.

Memory tip: Think of uptime as "is the network on or off?" - anything that turns it off (planned or unplanned) affects uptime. Packet loss and power draw affect how well the network works, not whether it's available.

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