The CiscoCertUtil tool is a command-line utility used within the Cisco Unified Contact Center Enterprise (UCCE) environment, primarily on Windows-based servers. Its main function is to facilitate the creation and management of security certificates required by various UCCE components.

The tool is specifically designed to generate Certificate Signing Requests (CSRs), which are then sent to a Certificate Authority (CA) to be signed. This is a critical step in obtaining trusted third-party or enterprise CA-signed certificates. Additionally, for diagnostic purposes, the CiscoCertUtil tool creates a log file in the directory from which it is run. This log captures the details of the operations performed, which is invaluable for troubleshooting any issues during certificate generation or import processes.

A. is supported on servers running Linux Server: The CiscoCertUtil tool is a Windows executable (.exe) and is documented for use on Windows Server platforms where UCCE components are installed, not Linux.

C. generates self-signed certificates in the PEM format, which is an X509 extension: This statement is technically inaccurate. PEM is a container format, not an X.509 extension. The tool's primary documented purpose is CSR generation, not creating self-signed certificates.

E. validates any certificate: The tool is not a general-purpose certificate validation utility. Its scope is limited to generating requests and importing certificates for specific Cisco UCCE components, not validating arbitrary certificates.

1. Cisco Unified Contact Center Enterprise Installation and Upgrade Guide

Release 12.5(1)

Reference for B: In the chapter "Configure Security

" section "Generate a Certificate Signing Request

" the guide explicitly states

"Use the CiscoCertUtil tool to generate a CSR for each of the required certificates." This confirms its CSR generation function.

Reference for A (Incorrect): The guide consistently describes procedures for Windows Server

and the tool is presented as a Windows utility (CiscoCertUtil.exe). There is no mention of Linux support.

2. Security Guide for Cisco Unified CCE

Release 12.0(1)

Reference for B: The section "Third-Party CA-Signed Certificates" details the procedure: "Step 1: Run the CiscoCertUtil tool to generate a Certificate Signing Request (CSR)." This directly supports option B.

Reference for D: In troubleshooting sections related to certificate issues

the guide implicitly relies on the output and logs from tools like CiscoCertUtil. The tool's design includes creating a log file (e.g.

ciscocertutil.log) in its execution directory to aid diagnostics

a standard practice for such utilities.

3. Cisco Unified Communications Manager Security Guide

Release 12.5(1)SU1

Reference for C & E (Incorrect): While discussing certificate management

the guide distinguishes between tools for CSR generation (like CiscoCertUtil for specific components) and the general process of certificate validation or self-signed certificate creation

which often involves the CA itself or other platform tools. The specific

narrow function of CiscoCertUtil is CSR generation for its target application

not these broader tasks.