300-070 Question #363: Real Exam Question with Answer & Explanation

The correct answer is A: 380, 387, 388, 389. The CUCM route pattern wildcard [^1-6] is a negation operator that matches any single digit not in the range 1 through 6, so 38[^1-6] matches 380, 387, 388, and 389.

Question

Which option lists matches for the route pattern 38[^1-6]?

Options

A380, 387, 388, 389
B381, 382, 383, 384, 385, 386 only
C381, 386 only
D381, 382, 383, 384, 385, 386, 38*, 38# only

Explanation

The CUCM route pattern wildcard [^1-6] is a negation operator that matches any single digit not in the range 1 through 6, so 38[^1-6] matches 380, 387, 388, and 389.

Common mistakes.

B. 381 through 386 are exactly the digits excluded by [^1-6]; these would be matched by the non-negated pattern 38[1-6], not by 38[^1-6].
C. Both 381 and 386 fall within the negated range [1-6] and are explicitly excluded from matching by the ^ operator.
D. 381 through 386 are negated and thus excluded; additionally, * and # are not matched by a numeric range negation in this dial pattern context.

Concept tested. CUCM route pattern negation wildcard bracket syntax

Reference. https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/12_5_1/systemConfig/cucm_b_system-configuration-guide-1251/cucm_b_system-configuration-guide-1251_chapter_0110.html

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