Exam ID HP0-A21
Exam type Proctored exam taken at dedicated testing center
Exam duration 1 hour 30 minutes
Exam length 70 questions
Passing score 73%
Delivery languages English
Related Certifications
Supporting courses These recommended courses help you prepare for the exam:

Register for this Exam

You will need an HPE Learner ID and a Pearson VUE login and password.

During the exam, you can make specific comments about the exam and items. HPE welcomes these comments as part of our continuous improvement process.
No online or hard copy reference material will be allowed at the testing site. This exam may contain beta test items for experimental purposes.

Exam description

This exam tests your skills on NonStop Kernel Basics

Ideal candidate for this exam

This exam is for HPE Services personnel with a minimum of 3-6 months experience on HP NonStop NS-Series servers running the H-Series NonStop Kernel. Examples of job roles include:
• Authorized service and support personnel (field support technicians)
• Global Customer Support Center personnel
• Presales technical support personnel
• NonStop Kernel software developers, system integrators, and consultant partners
• Authorized service channel partners
• Customers authorized to service their own equipment 

Exam contents

This exam has 70 questions. Here are types of questions to expect:
  • Multiple choice (multiple responses)
  • Multiple choice (single response)
  • Drag-and-drop

Advice to help you take this exam

References to the majority of questions found in this exam can be found in manuals contained in the Online TIM collections. TIM (Total Information Manager) is a single interface to all NonStop Systems documentation and support information.
External users must subscribe to the TIM CD collection. See your NonStop Representative for more information.
NOTE: TIM must be installed on your system before using the following default access settings.


This exam validates that you can successfully perform the following:

Concepts and Terminology

  • Describe the NS-series hardware architecture
  • Characterize programs and processes
  • Describe I/O process models
  • Define disk and file system characteristics
  • Define major elements and their use in an NS-series
  • Explain concepts of message system
  • Define subsystem command interfaces
  • Define major software subsystems
  • Describe the system configuration procedure
  • Identify product dependencies
  • Define the features of the OSS subsystem

Configuration and Installation

  • Define customer requirements
  • Describe OSM setup and usage
  • Describe DSM/SCM software installation procedure
  • Describe subsystem configuration via startup and shutdown file sets
  • Describe SCF basic device configurations

System Administration

  • List requirements for database management
  • List requirements for tape management
  • List requirements for disk management
  • List requirements for workload/process management
  • List requirements for performance management
  • Describe OSS considerations

Symptoms and Data Collection for NSK/OS Problems

  • Explain how to locate and view EMS and the OS subsystem log files
  • Describe SAVEABEND files and how to create/locate them
  • Explain what a processor dump is and how to obtain one
  • Describe the main TFDS features and functions
  • Identify abnormal system and subsystem behaviors and events
  • Describe how to collect system environment data

Security Features and Functions

  • List the utilities that can be used to alter security attributes on a NonStop Kernel system
  • Describe how to modify and view security attributes using FUP Explain user ID management
  • Demonstrate knowledge of Safeguard configuration
  • Demonstrate knowledge of Safeguard concepts
  • Demonstrate knowledge of Safeguard usage
  • Describe OSS security issues

Single Node Connectivity

  • List the components of the ServerNet SAN
  • Describe the features and functions of the Maintenance Entity
  • Explain how to identify and isolate TCP/IP problems for OSM connectivity
  • Describe how to manage SWANs
  • Demonstrate proper use of network management tools

Information Sources

  • Describe the technical documentation/content on docs.hp.com
  • Describe what information is on the OSM console and how to access it
  • Describe what additional information is available and where

Learning resources that were developed before the Hewlett-Packard Company separation might contain some content and brand elements that have not been updated for Hewlett Packard Enterprise. Learning resources with the highest usage are updated.