Designing Cisco Network Service Architectures (ARCH, legacy) — Question 63

A customer has several remote sites connected with the HQ via microwave links. An engineer has been asked to propose a backup WAN connectivity for these sites with these requirements:
✑ Physical WAN connectivity is not available for most of these sites.
✑ A low-cost and fast-to-implement backup solution must be deployed.
✑ Bandwidth needs for the backup link are low.
✑ Users can tolerate a WAN outage of up to 2 hours.
Which backup WAN link type does the engineer recommend?

Answer options

Correct answer: A

Explanation

The correct answer is A, LTE, as it provides a reliable and low-cost backup solution that can be quickly deployed and meets the low bandwidth requirements. The other options, such as 802.16 WiMAX and laser link, may not offer the same level of availability or ease of implementation in remote areas, while Bluetooth is typically not suitable for WAN connections.