Which two host portion format conditions are true for directory URI on Cisco Unified Communications Manager? (Choose two.)
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A. B. C. D. E. F.BE.
Cisco Unified Communications Manager supports the following formats in the host portion of a directory URI (the portion after the @ symbol): -> Supports IPv4 addresses or fully qualified domain names.
-> Accepted characters are a-z, A-Z ,0-9, hyphens, and dots.
-> The host portion cannot start or end with a hyphen.
-> The host portion cannot have two dots in a row.
-> Minimum of two characters.
-> The host portion is not case sensitive.
References: http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/bat/9_1_1/CUCM_BK_C271A69D_00_cucm-bulk-administration-guide-91/ CUCM_BK_C271A69D_00_cucm-bulk-administration-guide-91_chapter_01001110.html.
Directory URI is a type of address used in Cisco Unified Communications Manager (CUCM) to identify users and endpoints. It is composed of two parts: a user or device identifier, and a domain name. The user or device identifier is called the host portion, while the domain name is called the domain portion. The host portion can have certain format conditions that must be met.
The two host portion format conditions that are true for directory URI on Cisco Unified Communications Manager are:
B. It cannot start with a hyphen. E. It cannot end with a hyphen.
Explanation:
B. It cannot start with a hyphen: The host portion of a directory URI cannot begin with a hyphen (-). This is because the hyphen is used as a delimiter between the host portion and the domain portion of the directory URI. If the host portion starts with a hyphen, it can create confusion about the boundary between the host and domain portions.
E. It cannot end with a hyphen: Similarly, the host portion of a directory URI cannot end with a hyphen. This is because the hyphen is used as a delimiter between the host and domain portions of the directory URI. If the host portion ends with a hyphen, it can create confusion about the boundary between the host and domain portions.
A. It is case sensitive: This statement is not true. The host portion of a directory URI is not case sensitive. This means that uppercase and lowercase letters can be used interchangeably in the host portion.
C. It must have at least one character: This statement is not true. The host portion of a directory URI can be empty. In this case, the hyphen delimiter should still be included between the host and domain portions.
D. It supports IPv4 or IPv6 addresses, or fully qualified domain names: This statement is true. The host portion of a directory URI can contain an IPv4 or IPv6 address, or a fully qualified domain name.
F. It supports the & character: This statement is not true. The ampersand (&) character is not allowed in the host portion of a directory URI.