Which three Cisco platforms are classified as core routers?

Which three Cisco platforms are classified as core routers? (Choose three.)

A.
Cisco XR 12000

B.
Cisco ME 3400

C.
Cisco ASR 1006

D.
Cisco CRS-3

E.
Cisco ASR 9010

F.
Cisco 3900

Explanation:
Both the ASR 9010 and ASR 9006 routers are designed with key capabilities to help deliver the

services of tomorrow. Providing increased bandwidth capabilities for network devices at
economically viable prices is one of the primary criteria for true carrier-transport platforms.While
traditional service prices continue to decline, the Cisco ASR 9000 Series helps establish a new
financial reality by facilitating reliable and scalable video, nextgeneration mobile aggregation, and
advanced Carrier Ethernet service offerings.
The Cisco® XR 12000 Series and Cisco 12000 Series routers compose a portfolio of intelligent
routing solutions that scale from 2.5- to n x10 Gbps capacity per slot, enabling carrier-class
IP/Multiprotocol Label Switching (MPLS) networks and accelerating the evolution to IP NextGeneration Networks. Built upon a foundation of investment protection, this portfolio delivers up to
1.28-terabits-per-second switching capacity with wire-speed feature performance, scalability, and
graceful hardware and software upgrade paths.