527 Courses in Belfast

The "Foundations of Immunisation and Vaccines for Non-Registered Practitioners" course is fully compliant with the National Minimum Standards and Core Curriculum for Immunisation Training and is designed to equip non-registered healthcare professionals with a solid understanding of immunisation concepts, vaccine administration, and the importance of vaccination in public health.

Mental Health First Aiders (MHFAiders®) are vital to helping boost employee wellbeing as we adjust to a completely changed workplace environment.

Hyper V for engineers training course description This five day course will provide you with the knowledge and skills required to design and implement Microsoft Server Virtualization solutions using Hyper-V and System Center. Please note that due to the nature of the lab / environment build delegates may be required to work in pairs. What will you learn Install and configure the Hyper-V server role. Create virtual machines, create and manage virtual hard disks and work with snapshots. Create and configure virtual machine networks in a Hyper-V environment. Provide high availability for Hyper-V environment by implementing failover clustering. Use System Center 2012 R2 Virtual Machine Manager. Create and manage virtual machines by using VMM. Hyper V for engineers training course details Who will benefit: Anyone designing, implementing, managing and maintaining a virtualization infrastructure. Prerequisites: Supporting Windows server 2012 Duration 5 days Hyper V for engineers training course contents Evaluating the environment for virtualization Overview of Microsoft virtualization, Overview of system center 2012 R2 components, Evaluating current environment for virtualization, Extending virtualization to the cloud environment. Selecting the appropriate virtualization method, Assessing the environment by using MAP. Installing and configuring the Hyper-V role Installing the Hyper-V role, Managing Hyper-V, Configuring Hyper-V settings, Hyper-V Host storage and networking, Installing the Hyper-V server role, Configuring Hyper-V settings, Accessing and managing Hyper-V remotely. Creating and managing virtual hard disks, virtual machines, and checkpoints Creating and configuring virtual hard disks, Creating and configuring virtual machines, Installing and Importing virtual machines, Managing virtual machine checkpoints, Monitoring Hyper-V, Designing virtual machines for server roles and services, Creating and managing virtual hard disks, Creating and managing virtual machines, Importing virtual machines and working with checkpoints monitoring Hyper-V. Creating and configuring virtual machine networks Creating and using Hyper-V virtual switches, Advanced Hyper-V networking features, Configuring and using Hyper-V network virtualization, Creating and using Windows Server 2012 R2 Hyper-V virtual switches, Configuring and using advanced virtual switch features, Configuring Hyper-V Network virtualization. Virtual machine movement and Hyper-V replica Providing high availability and redundancy for virtualization, Implementing virtual machine movement, Implementing and managing Hyper-V replica, Moving Hyper-V storage and virtual machines, Configuring and managing Hyper-V replica. Implementing failover clustering with Hyper-V Overview of failover clustering, Configuring and using shared storage, Implementing and managing failover clustering with Hyper-V, Creating a Hyper-V failover cluster, Managing a Hyper-V failover cluster. Installing and configuring System Center 2012 R2 virtual machine manager Integrating system center and server virtualization, Overview of VMM, Installing VMM, Adding hosts and managing host groups, Installing and configuring System Center 2012 R2 VMM, Managing hosts and host groups. Managing the Networking and storage infrastructure in System Center 2012 R2 VMM Managing networking infrastructure managing storage infrastructure, Managing infrastructure updates, Implementing a network infrastructure, Implementing a storage infrastructure, Managing infrastructure updates. Creating and managing VM using MS System Center 2012 R2 VMM VMM tasks in VMM, Creating, cloning, and converting VMs, Overview of VM updating, Creating a VM and modifying it's properties, Cloning a VM. Configuring and managing the MS System Center 2012 R2 VMM library and library objects Overview of the VMM library, Working with profiles and templates, Configuring and managing the VMM library, Creating and managing profiles and templates. Managing clouds in MS System Center 2012 R2 VMM Introduction to clouds, Creating and managing a cloud, Working with user roles in VMM, Creating a cloud, Working with user roles, Deploying VMs to a private cloud. Managing services in MS System Center 2012 R2 VMM and app controller Understanding services in VMM, Creating and managing services in VMM, Using app controller Creating a service template, Deploying a service and updating a service template, Configuring app controller, Deploying a VM in app controller. Protecting and monitoring virtualization infrastructure Overview of backup and restore options for VM, Protecting virtualization Infrastructure using DPM, Using Operations Manager for monitoring and reporting, Integrating VMM with Operations Manager, Implementing MS System Center 2012 R2 Operations Manager agents, Configuring Operations Manager monitoring components, Configuring Operations Manager integration with System Center 2012 R2 VMM.

Java training course description A comprehensive introduction of the Java language and environment. It is important to note that the course will assume that the delegates are already familiar with the C language as this enables more advanced features of the Java language to be covered in the course. The course will also give an overview of areas related to programming in Java. What will you learn Describe the Java architecture. Write Java applets and applications. Debug Java programs. Examine existing code and determine its function. Use multimedia extensions, the awt, multithreading, exceptions within Java Java training course details Who will benefit: Those wishing to program in Java. Prerequisites: Complete C programming Duration 5 days Java training course contents Review of UNIX fundamentals What is Java? What Java is, history of Java, reasons for success. The Java Virtual Machine, Bytecodes, getting up and running with Java, Java resources. Simple Java applications. C features in Java Java data structures, Java flow control, differences from C, arrays, strings and packages. OO features in Java Java classes and objects, inheritance, overloading, packages. Differences from C++. Java applets Applications vs. applets, HTML, the applet tag, applet methods, life cycle, testing and debugging. Multimedia applets Images, sounds, fonts, colours and animation. Java products The JDK in detail, other development environments. Javabeans and JDBC overviews. Abstract Window Toolkit JFC and Swing versus AWT. Event handling (JDK 1.1), GUIs, panels, buttons, lists, scrollbars, text areas, frames… Exception handling and multithreading Handling exceptions. Starting, pausing, stopping threads, producers, consumers, monitoring. More standard classes Java file I/O, Streams, The system class. The networking model, java.net classes. Security and Java Types of attack, the security manager, craplets, securing the network. Integrating legacy code with Java

Complete C programming training course description A hands-on introduction to programming in the ANSI C programming language. The course initially moves at a fast pace in order to spend as much time as possible on the subject of pointers - the area which cause the most bugs in C programs. What will you learn Write ANSI C programs Use the C libraries Debug C programs Examine existing code and determine its function. Complete C programming training course details Who will benefit: Programmers wishing to learn C. Programmers wishing to learn C++ or Java. Prerequisites: None, although experience in another high level language would be useful. Duration 5 days Complete C programming training course contents Getting started The compilation process, comments, main(), statement blocks, printf(). C data types and operators char, int, float and double, qualifiers, arithmetic and assignment operators, precedence, Associativity. Basic I/O C libraries, stdin and stdout, getchar(), putchar(), printf() formatting. Flow control if else, dangling elses, else if, while and for loops. switch statements, the null statement, break, continue and gotos. Functions Function calls, arguments and return types, function declarations (prototypes), function definitions, scope of variables. The preprocessor Preprocessor actions, macros, #include. Libraries and their relationship with header files. Conditional compilation. More data types and operators Logical, bitwise and other operators, type conversion, casting, typedefs and access modifiers. Arrays Declaring and handling arrays, common gotchas, multidimensional arrays. Pointers What are pointers? Why they are so important, declaring and using pointers,The three uses of the *,pointer example - scanf, pointers as arguments. More pointers Golden rules of pointers and arrays, pointers to arrays, pointer arithmetic, arrays of pointers, multiple indirection. Character/string manipulation Arrays of characters, string definition, working with strings, String library. Program arguments argc and argv, example uses,char *argv[] versus char ** argv. Program structure and storage classes Globals (externals), multi source programs, the look of a C program. Structures Declaration, the . and - operators, unions and bitfields. Library functions File handling, fopen and fclose, reading from and writing to files, fseek().calloc() and malloc()

Windows PowerShell training course description This course is intended for IT Professionals who are already experienced in general Windows Server and Windows Client administration, and who want to learn more about using Windows PowerShell for administration. No prior experience with any version of Windows PowerShell, or any scripting language, is assumed. This course is also suitable for IT Professionals already experienced in server administration, including Exchange Server, SharePoint Server, SQL Server, System Center, and others. What will you learn Work with Windows PowerShell pipeline. Query system information by using WMI and CIM. Work with variables, arrays, and hash tables. Write advanced scripts in Windows PowerShell. Administer remote computers. Use advanced Windows PowerShell techniques. Windows PowerShell training course details Who will benefit: IT professionals. Prerequisites: Supporting Windows Server Duration 5 days Windows PowerShell training course contents Getting started with Windows PowerShell Overview and background of Windows PowerShell, Understanding command syntax, Finding commands. Hands on Configuring Windows PowerShell console & ISE application. Hands on Finding and running basic commands, Using the About files. Cmdlets for administration Active Directory administration cmdlets, Network configuration cmdlets, Other server administration cmdlets. Hands on Windows Administration. Creating and managing Active Directory objects, Configuring network settings on Windows Server, Creating a web site. Working with the Windows PowerShell pipeline Understanding the pipeline, Selecting, sorting, and measuring objects, Filtering objects out of the pipeline, enumerating objects in the pipeline, Sending pipeline data as output. Hands on Using the pipeline. Selecting, sorting, and displaying data. Hands on Filtering objects. Hands on Enumerating objects. Hands on Sending output to a file. Exporting user information to a file. Understanding how the pipeline works Passing the pipeline data, Advanced considerations for pipeline data. Hands on Working with pipeline parameter binding. Predicting pipeline behaviour. Using PSProviders and PSDrives Using PSProviders, Using PSDrives. Hands on Using PSProviders and PSDrives Creating files and folders on a remote computer, Creating a registry key for your future scripts, Create a new Active Directory group. Querying system information by using WMI and CIM Understanding WMI and CIM, Querying data by using WMI and CIM, Making changes with WMI/CIM. Hands on Working with WMI and CIM. Querying information by using WMI, Querying information by using CIM, Invoking methods. Working with variables, arrays, and hash tables Manipulating variables, arrays and hash tables. Hands on Working with variables, Using arrays, Using hash tables. Basic scripting Introduction to scripting, Scripting constructs, Importing data from files. Hands on Basic scripting. Setting a script, Processing an array with a ForEach loop, Processing items by using If statements, Creating a random password, Creating users based on a CSV file. Advanced scripting Accepting user input, Overview of script documentation, Troubleshooting and error handling, Functions and modules. Hands on Accepting data from users. Querying disk information from remote computers, Updating the script to use alternate credentials, Documenting a script. Hands on Implementing functions and modules. Creating a logging function, Adding error handling to a script, Converting a function to a module. Administering Remote Computers Using basic Windows PowerShell remoting, Using advanced Windows PowerShell remoting techniques, Using PSSessions. Hands on Using basic remoting. Enabling remoting on the local computer, Performing one-to-one remoting, Performing one-to-many remoting. Hands on Using PSSessions. Using implicit remoting, Managing multiple computers. Using background jobs and scheduled jobs Using background jobs, Using scheduled jobs. Hands on Using background jobs and scheduled jobs. Starting and managing jobs, Creating a scheduled job. Using advanced Windows PowerShell techniques Creating profile scripts, Using advanced techniques. Hands on Practicing advanced techniques. Creating a profile script, Verifying the validity of an IP address, Reporting disk information, Configuring NTFS permissions, Creating user accounts with passwords from a CSV file. Hands on Practicing script development (optional)

VMware training course description This five-day VMware course features intensive handson training that focuses on installing, configuring, and managing VMware vSphere 8, which includes VMware ESXi 8 and VMware vCenter 8. This course prepares you to administer a vSphere infrastructure for an organization of any size. This course is the foundation for most VMware technologies in the software-defined data center. What will you learn Install and configure ESXi hosts. Deploy and configure vCenter. Create virtual networks using standard and distributed switches. Configure VMs, templates, clones, and snapshots. Manage virtual machine resource allocation. Migrate virtual machines with vSphere vMotion and vSphere Storage vMotion. VMware training course details Who will benefit: Systems administrators and engineers. Prerequisites: Introduction to data communications & networking. Windows/Linux Administration. Duration 5 days VMware training course contents Course Introduction Introductions and course logistics. Course objectives vSphere and Virtualization Overview Explain basic virtualization concepts, Describe how vSphere fits in the software-defined data center and the cloud infrastructure, Recognize the user interfaces for accessing vSphere, Explain how vSphere interacts with CPUs, memory, networks, storage, and GPUs Installing and Configuring ESXi Install an ESXi host, Recognize ESXi user account best practices, Configure the ESXi host settings using the DCUI and VMware Host Client Deploying and Configuring vCenter Recognize ESXi hosts communication with vCenter, Deploy vCenter Server Appliance, Configure vCenter settings, Use the vSphere Client to add and manage license keys, Create and organize vCenter inventory objects, Recognize the rules for applying vCenter permissions, View vCenter logs and events Configuring vSphere Networking Configure and view standard switch configurations, Configure and view distributed switch configurations, Recognize the difference between standard switches and distributed switches, Explain how to set networking policies on standard and distributed switches Configuring vSphere Storage Recognize vSphere storage technologies, Identify types of vSphere datastores, Describe Fibre Channel components and addressing, Describe iSCSI components and addressing, Configure iSCSI storage on ESXi, Create and manage VMFS datastores, Configure and manage NFS datastores Deploying Virtual Machines Create and provision VMs, Explain the importance of VMware Tools, Identify the files that make up a VM Recognize the components of a VM, Navigate the vSphere, Client and examine VM settings and options, Modify VMs by dynamically increasing resources, Create VM templates and deploy VMs from them, Clone VMs, Create customization specifications for guest operating systems, Create local, published, and subscribed content libraries, Deploy VMs from content libraries, Manage multiple versions of VM templates in content libraries Managing Virtual Machines Recognize the types of VM migrations that you can perform within a vCenter instance and across vCenter instances, Migrate VMs using vSphere vMotion, Describe the role of Enhanced vMotion Compatibility in migrations, Migrate VMs using vSphere Storage vMotion, Take a snapshot of a VM, Manage, consolidate, and delete snapshots, Describe CPU and memory concepts in relation to a virtualized environment, Describe how VMs compete for resources Define CPU and memory shares, reservations, and limits Deploying and Configuring vSphere Clusters Create a vSphere cluster enabled for vSphere DRS and vSphere HA, View information about a vSphere cluster Explain how vSphere DRS determines VM placement on hosts in the cluster, Recognize use cases for vSphere DRS settings, Monitor a vSphere DRS cluster Describe how vSphere HA responds to various types of failures, Identify options for configuring network redundancy in a vSphere HA cluster, Recognize vSphere HA design considerations, Recognize the use cases for various vSphere HA settings, Configure a vSphere HA cluster, Recognize when to use vSphere Fault Tolerance Managing the vSphere Lifecycle Enable vSphere Lifecycle Manager in a vSphere cluster, Describe features of the vCenter Update Planner, Run vCenter upgrade prechecks and interoperability reports, Recognize features of vSphere Lifecycle Manager, Distinguish between managing hosts using baselines and managing hosts using images, Describe how to update hosts using baselines, Describe ESXi images, Validate ESXi host compliance against a cluster image and update ESXi hosts, Update ESXi hosts using vSphere Lifecycle Manager, Describe vSphere Lifecycle Manager automatic recommendations, Use vSphere Lifecycle Manager to upgrade VMware Tools and VM hardware

About this training course Artificial lift systems are an important part of production operations for the entire lifecycle of an asset. Often, oil and gas wells require artificial lift for most of the life cycle. This 5-day training course offers a thorough treatment of artificial lift techniques including design and operation for production optimization. With the increasing need to optimize dynamic production in highly constrained cost environments, opportunities and issues related to real-time measurements and optimization techniques needs to be discussed and understood. Artificial lift selection and life cycle analysis are covered. These concepts are discussed and reinforced using case studies, quizzing tools, and exercises with software. Participants solve examples and class problems throughout the course. Animations and videos reinforce the concepts under discussion. Understanding of these important production concepts is a must have to exploit the existing assets profitably. Unique Features: Hands-on usage of SNAP Software to solve gas-lift exercises Discussion on digital oil field Machine learning applications in gas-lift optimization Training Objectives After the completion of this training course, participants will be able to: Understand the basics and advanced concepts of each form of artificial lift systems including application envelope, relative strengths, and weaknesses Easily recognize the different components from downhole to the surface and their basic structural and operational features Design and analyze different components using appropriate software tools Understand challenges facing artificial lift applications and the mitigation of these challenges during selection, design, and operation Learn about the role of digital oilfield tools and techniques and their applications in artificial lift and production optimization Learn about use cases of Machine learning and artificial intelligence in the artificial lift Target Audience This training course is suitable and will greatly benefit the following specific groups: Production, reservoir, completion, drilling and facilities engineers, analysts, and operators Anyone interested in learning about selection, design, analysis and optimum operation of artificial lift and related production systems will benefit from this course. Course Level Intermediate Advanced Training Methods The training instructor relies on a highly interactive training method to enhance the learning process. This method ensures that all participants gain a complete understanding of all the topics covered. The training environment is highly stimulating, challenging, and effective because the participants will learn by case studies which will allow them to apply the material taught in their own organization. Course Duration: 5 days in total (35 hours). Training Schedule 0830 - Registration 0900 - Start of training 1030 - Morning Break 1045 - Training recommences 1230 - Lunch Break 1330 - Training recommences 1515 - Evening break 1530 - Training recommences 1700 - End of Training The maximum number of participants allowed for this training course is 20. This course is also available through our Virtual Instructor Led Training (VILT) format. Prerequisites: Understanding of petroleum production concepts. Each participant needs a laptop/PC for solving class examples using software to be provided during class. Laptop/PC needs to have a current Windows operating system and at least 500 MB free disk space. Participants should have administrator rights to install software. Trainer Your expert course leader has over 35 years' work-experience in multiphase flow, artificial lift, real-time production optimization and software development/management. His current work is focused on a variety of use cases like failure prediction, virtual flow rate determination, wellhead integrity surveillance, corrosion, equipment maintenance, DTS/DAS interpretation. He has worked for national oil companies, majors, independents, and service providers globally. He has multiple patents and has delivered a multitude of industry presentations. Twice selected as an SPE distinguished lecturer, he also volunteers on SPE committees. He holds a Bachelor's and Master's in chemical engineering from the Gujarat University and IIT-Kanpur, India; and a Ph.D. in Petroleum Engineering from the University of Tulsa, USA. Highlighted Work Experience: At Weatherford, consulted with clients as well as directed teams on digital oilfield solutions including LOWIS - a solution that was underneath the production operations of Chevron and Occidental Petroleum across the globe. Worked with and consulted on equipment's like field controllers, VSDs, downhole permanent gauges, multiphase flow meters, fibre optics-based measurements. Shepherded an enterprise-class solution that is being deployed at a major oil and gas producer for production management including artificial lift optimization using real time data and deep-learning data analytics. Developed a workshop on digital oilfield approaches for production engineers. Patents: Principal inventor: 'Smarter Slug Flow Conditioning and Control' Co-inventor: 'Technique for Production Enhancement with Downhole Monitoring of Artificially Lifted Wells' Co-inventor: 'Wellbore real-time monitoring and analysis of fracture contribution' Worldwide Experience in Training / Seminar / Workshop Deliveries: Besides delivering several SPE webinars, ALRDC and SPE trainings globally, he has taught artificial lift at Texas Tech, Missouri S&T, Louisiana State, U of Southern California, and U of Houston. He has conducted seminars, bespoke trainings / workshops globally for practicing professionals: Companies: Basra Oil Company, ConocoPhillips, Chevron, EcoPetrol, Equinor, KOC, ONGC, LukOil, PDO, PDVSA, PEMEX, Petronas, Repsol, , Saudi Aramco, Shell, Sonatrech, QP, Tatneft, YPF, and others. Countries: USA, Algeria, Argentina, Bahrain, Brazil, Canada, China, Croatia, Congo, Ghana, India, Indonesia, Iraq, Kazakhstan, Kenya, Kuwait, Libya, Malaysia, Oman, Mexico, Norway, Qatar, Romania, Russia, Serbia, Saudi Arabia, S Korea, Tanzania, Thailand, Tunisia, Turkmenistan, UAE, Ukraine, Uzbekistan, Venezuela. Virtual training provided for PetroEdge, ALRDC, School of Mines, Repsol, UEP-Pakistan, and others since pandemic. POST TRAINING COACHING SUPPORT (OPTIONAL) To further optimise your learning experience from our courses, we also offer individualized 'One to One' coaching support for 2 hours post training. We can help improve your competence in your chosen area of interest, based on your learning needs and available hours. This is a great opportunity to improve your capability and confidence in a particular area of expertise. It will be delivered over a secure video conference call by one of our senior trainers. They will work with you to create a tailor-made coaching program that will help you achieve your goals faster. Request for further information post training support and fees applicable Accreditions And Affliations

Microsoft Exchange training course description A hands on course focusing on the day to day running of Microsoft Exchange. The course is designed for those with a sound understanding of how Exchange forwards emails and concentrates on important issues such as monitoring, backups and restores. This course can be delivered on any version of Microsoft exchange and tailored as required. What will you learn Install MS Exchange Create, configure and manage user mailboxes. Configure and administer MS Exchange. Backup and restore MS Exchange. Microsoft Exchange training course details Who will benefit: Anyone working with MS Exchange. Prerequisites: Total SMTP and email for engineers Duration 3 days Microsoft Exchange training course contents Review of mail basics Basic routing & Client/Server, Mail flow & protocols, Mail server technology. Exchange features MAPI, Database, The Exchange organisation, Active Directory consideration. Installing Understanding server roles, Planning for Exchange, Preparing Active Directory, Preparing the host server, Installing Exchange. Introduction to Exchange management tools Exchange Management shell, Exchange Management console. Administration Configuring SMTP domains, Send connectors, Receive connectors, Setting up & managing user mailboxes, Setting up resource mailboxes, Mail enabled groups, Address lists. Troubleshooting Security & troubleshooting wizards, Windows platform tools, External/Internet tools.

Debian training course description This three day hands on course provides a comprehensive coverage of core Linux administration tasks on Debian Linux. What will you learn Administer & configure Linux systems. Maintain Linux by handling disk space and taking regular backups. Manage software packages. Perform basic troubleshooting. Maintain a secure Linux system. Describe the organisation and implementation of the filesystem. Debian training course details Who will benefit: System administrators. Network administrators. Prerequisites: Linux fundamentals Duration 3 days Debian training course contents Managing software Package Concepts, RPM, rpm Commands, Yum, Dependencies and Conflicts, Startup Script Problems, Shared Libraries, Library Management, Managing Processes, the Kernel: The First Process, Process Lists, Foreground & Background Processes, Process Priorities, Killing Processes. Configuring hardware Configuring Firmware and Hardware, IRQs, I/O Addresses, DMA Addresses, Boot Disks, Coldplug and Hotplug Devices, Configuring Expansion Cards and PCI Cards, Kernel Modules, USB Devices, Linux USB Drivers, Configuring Hard Disks, Partitioning Systems, LVM, Common Layouts, Creating Partitions and Filesystems, Maintaining Filesystem Health, Tuning, Journals, Checking Filesystems, Monitoring Disk Use, Mounting and Unmounting Filesystems. Managing files File Management Commands, File Naming and Wildcards, File Archiving, Links, Directory Commands, File Ownership and Group, File access control, Permissions, chmod, Defaults, File Attributes, Disk Quotas, Enabling and setting Quotas, Locating Files, The FHS. Booting Linux and editing files Installing Boot Loaders, GRUB Legacy, GRUB 2, Alternative Boot Loaders, the Boot Process, Boot Messages, Runlevels and the Initialization Process, Runlevel Functions, Runlevel Services, Alternative Boot Systems , Upstart, system. Administering the system Managing Users and Groups, Tuning User and System Environments, Using System Log Files, Understanding syslogd , Setting Logging Options, Manually Logging Data, Rotating Log Files, Reviewing Log File Contents, Maintaining the System Time, Linux Time Concepts, Manually Setting the Time, Using NTP, Running Jobs in the Future, Understanding the Role of cron, Creating System cron Jobs, Creating User cron Jobs, Using anacron, Using at. Configuring basic networking TCP/IP, Network Hardware, Network Addresses, Hostnames, Network Ports, Configuring Linux for a Local Network, Configuring with DHCP, Static IP Address, Configuring Routing, Using GUI Configuration Tools, ifup and ifdown, Diagnosing Network Connections, Testing Connectivity, Tracing a Route, Checking Network Status , Examining Network Traffic, Additional Tools. Securing your systems Administering Network Security, Super Server Restrictions, Disabling Unused Servers, Administering Local Security, Securing Passwords, Limiting root Access, Setting Login, Process, SUID/SGID Files, Configuring SSH, Using GPG, Generating, Importing and Revoking Keys, Encrypting and Decrypting Data, Signing Messages and Verifying Signatures.