You are working for a large service provider. The engineering team requested that new SIP-600
cards be rolled out in all 7600 Series Routers in the network. The current certified Cisco IOS
release for these routers is 12.2(18)SXF8. You realize that the Cisco IOS Software must be
upgraded to support the new SIP-600 cards, but engineering has not specified an upgrade. The
engineering team confirms this need and informs you that the certification lab has begun testing
Cisco IOS Release 12.2(33)SRD for this purpose and has not encountered any problems yet.
How should you proceed?

A.
Upgrade all the 7600 Series Routers to Cisco IOS Release 12.2(33)SRD before installing the
SIP-600 cards during the next available maintenance window.

B.
Install the SIP-600 cards in all the chassis prior to the Cisco IOS Release 12.2(33)SRD
upgrade because this can be done at any time without any downtime expected.

C.
Deploy Cisco IOS Release 12.2(33)SRD and the SIP-600 cards to a limited number of nodes in
the network before a complete network upgrade.

D.
Defer acting on the plan until the certification lab has fully tested the new Cisco IOS release
and SIP-600 cards.

Explanation: