Question 457:
Company ABC is deploying Mobile and Remote Access (MRA) to allow employees to login Jabber clients from anywhere on the internet. Which SIP Response does a Cisco Expressway-E send when it receives an initial SIP REGISTER request from a Jabber client?
Answer options:
A. 494 Security Agreement Required B. 200 OK C. 491 Request Pending D. 305 Use Proxy E. 407 Proxy Authentication Required B