300-070 Question #211: Real Exam Question with Answer & Explanation

The correct answer is H: Phone 2, Phone 3, Phone 4 and Phone 5. In CUCM, reachability between phones is controlled by Partitions and Calling Search Spaces (CSS). A phone can call another phone only if the called phone's partition is included in the calling phone's CSS. The exhibit (not shown here) depicts a CSS/partition configuration where P

Question

Refer to the Exhibit. Which phones can Phone 1 reach?

Exhibit

Options

APhone 2
BPhone 3
CPhone 4
DPhone 5
EPhone 2 and Phone 3
FPhone 4 and Phone 5
GPhone 2, Phone 3 and Phone 4
HPhone 2, Phone 3, Phone 4 and Phone 5

Explanation

In CUCM, reachability between phones is controlled by Partitions and Calling Search Spaces (CSS). A phone can call another phone only if the called phone's partition is included in the calling phone's CSS. The exhibit (not shown here) depicts a CSS/partition configuration where Phone 1's CSS includes all partitions containing Phones 2, 3, 4, and 5. This means Phone 1 has unrestricted reach to all four phones. This is a common exam scenario to test understanding that a broader CSS grants access to more destinations.

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