Practice Quiz

CompTIA Network+

Category - Media & Topologies

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Jack has been asked to design a network’s WAN connection. The network has two locations that are not currently connected to each other. The locations will be sharing e-mail and data applications across the WAN intermittently and on a small scale. Which WAN specification should John choose?
  1. ISDN
  2. Frame relay
  3. X.25
  4. ATM
Explanation
Answer: A - In this case, Jack can use the ISDN specifications to design the company’s WAN connection.

Key Takeaway: ATM is really not needed since there is no need for high-speed transmission. X.25 cannot be used because it is a legacy WAN protocol used mainly for text data. Between Frame relay and ISDN, the initial setup cost for Frame Relay is higher than that for ISDN. ISDN is the best choice, since the initial setup cost is low and suits the requirements perfectly for an intermittent data exchange in small amounts.
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