Cisco CCNA (200-301)Network FundamentalsMedium
A network administrator is designing a new network for a small office that needs to support both wired and wireless clients. The administrator wants to use a single device that combines the functions of a router, a switch, and a wireless access point. Which type of device should they choose?
- ALayer 3 switch
- BFirewall appliance
- CWireless LAN Controller (WLC)
- DIntegrated Services Router (ISR)
Show answer & explanationAnswer & explanation
Correct answer: D. Integrated Services Router (ISR)
An Integrated Services Router (ISR) is a type of router that combines routing capabilities with other network functions, such as switching, wireless access point functionality, and security services (like firewall). This makes it an ideal choice for small to medium-sized offices looking for an all-in-one networking solution.
Why the other options are wrong
- A. A Layer 3 switch primarily combines switching and routing functions but typically does not include integrated wireless AP capabilities.
- B. A firewall appliance primarily provides security services and typically does not integrate routing, switching, or wireless AP functions.
- C. A WLC manages multiple access points but is not a router or a switch itself; it centralizes AP configuration and management.
Integrated Services Router (ISR)
An Integrated Services Router (ISR) is a multi-function network device that combines routing, switching, wireless access, and security services into a single platform for small to medium-sized networks.
- Consolidates multiple network functions into one device.
- Reduces complexity and cost for smaller deployments.
- Offers routing, switching, Wi-Fi, and security features.
Memory trick: An ISR is like a Swiss Army knife: all the services in one router.