What is the distinguishing difference between a LAN and WAN?

Question

Options

• AA LAN is a group of networked computers within a confined geographic area.
• BA WAN is a group of networked computers within a confined geographic area.
• CA LAN typically provides slower network connection speeds than a WAN.
• DA WAN is commonly used for intra-office communication.

• A
  91% (48)
• B
  6% (3)
• C
  2% (1)
• D
  2% (1)

Explanation

Option A is correct because a LAN (Local Area Network) is defined by its geographic constraint - it connects devices within a single building, office, or campus, and is typically owned and managed by one organization.

Why the distractors are wrong:

• B reverses the definition - it's the LAN, not the WAN, that is geographically confined. A WAN (Wide Area Network) spans large distances, even globally (e.g., the internet).
• C is the opposite of reality - LANs are typically faster than WANs because they cover shorter distances with dedicated infrastructure (often gigabit Ethernet or Wi-Fi).
• D is backwards - intra-office communication is the domain of a LAN, not a WAN. WANs connect geographically separate offices or networks together.

Memory tip: Think of the letters - LAN = Local (small, fast, nearby), WAN = Wide (large, slower, far away). If you can walk between all the connected devices, it's probably a LAN.

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