ProView Enterprise

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Sun Certification
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Agenda
1. Sun Certification Programs
2. Der IT-Architekt
3. SCEA Aufbau und Prüfungen
4. Eindrücke und Erfahrungen
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Sun Certification Programs
Solaris OS

• Sun Certified Network Administrator for Solaris
  OS
• ...
• Sun Certified Backup and Recovery Engineer
• ...
• Sun Certified Programmer
• Sun Certified Developer
• Sun Certified Web Component Developer
• Sun Certified Business Component Developer
• Sun Certified Enterprise Architect
• Sun Certified Developer for Sun ONE Application
  Server
• ...

Network/Storage
Java Technology
Sun Software Products
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Der IT-Architekt (1)

• "The ideal architect should be a person of
  letters, a mathematician, familiar with
  historical studies, a diligent student of
  philosophy, acquainted with music, not ignorant
  of medicine, learned in the responses of
  jurisconsults, familiar with astronomy and
  astronomical calculations."
• Vitruvius, ca. 25BC

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Der IT-Architekt (2)

• The IT-architect understands the wants and needs
  of the client, designs a solution, communicates
  that design to the client for approval and to the
  builder for construction.
• IT-Architekt ist kein Experte! Muss für seine
  Aufgabe Technik- und Domänen-Experten
  hinzuziehen! (Er kennt alles - aber nichts genau!
  ?)
• Was muss der IT-Architekt wissen?
• Produkte / Technologien / Integrationsmöglichkeite
  n
• Einarbeiten in Fachdomäne und Kundenumfeld
• -gt Erstellen der System Blueprints
• Software Engineering
• Master of the Ilities

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Aufbau SCEA
1. Multiple Choice Exam (48 Fragen, 75
Minuten, 68)
1. Multiple Choice Exam (48 Fragen, 75
Minuten, 68)
2. Architecture and Design Project (Projekt,
keine Zeitbegrenzung, 70)
3. Essay Exam (Fragen zum Projekt, 90
Minuten, Berechnung mit Projekt)
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Part I Multiple Choice Exam (1)

• Aufgabe
• Show your knowledge of the IT!
• Inhalte
• Common Architectures (Definition, Terminologie,
  NFR, Modelle, Konzepte)
• Documenting an Architecture (OOA/OOD, UML, 41,
  SAM, SW-Engineering)
• Patterns (GoF, Architectural, J2EE)
• Security (Java/J2EE Security, Kryptografie,
  Firewalls, DMZ, Topologien, Tunneling)
• Protocols Object Frameworks (HTTP/S, IIOP,
  JRMP, CORBA, RMI)
• Legacy Connectivity (JCA, Techniken, Screen
  Scraper, Object Mapper)
• J2EE (Components, Lifecycles, TX, Persistence,
  APIs JMS, JDBC, JNDI, etc.)
• Applicability of J2EE (Anwendbarkeit
  J2EE,EJB,CMP ja/nein)
• Internationalization (Terminologie, I18N in
  Java/J2EE)
• Messaging (Formen, Modelle, MOM, RPC, JMS, MDB)
• Schwierigkeiten
• kaum Unterlagen zur Vorbereitung
• sehr umfangreich

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Part I Multiple Choice Exam (2)

• Beispiel-Frage
• Toysrfuss, a national toy store is creating a
  new e-front for Order processing. Customers have
  to create an account to transact with them,
  although an account is not required for browsing
  the catalog. Customers can browse items and add
  them to a shopping cart. They can then proceed to
  checkout. At this time, they can update
  quantities and submit the order.
• What technologies may be best suited for this
  app?
• a. JSP for presentation and Servlets as
  controllers.b. Servlets for presentation and JSP
  as controller. c. Stateless Session Bean for
  Shopping cart. d. Stateless session bean for
  catalog retrieval. e. Stateful Session bean for
  shopping cart. f. Stateful session bean for
  Order update. g. Entity bean for Catalog
  retrieval. h. Entity bean for Order update.
• A a)deg b)abeh c)adeh d)befg

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Part I Multiple Choice Exam (3)

• Beispiel-Frage
• Which of the following are not true about N-Tier
  Systems?
• 1. N-Tier systems are distributed over many
  systems and hence always present a maintenance
  problem.
• 2. N-Tier systems are generally component based
  and are therefore quite easy to maintain.
• 3. Since N-Tier systems do not use database
  stored procedures or triggers for business logic
  processing, they are generally very slow.
• 4. Since N-Tier systems are container based,
  many N-Tier systems can be easily scaled (both
  vertically and horizontally).
• 5. N-Tier systems suffer only from one drawback
  over client/server systems - N-Tier systems do
  not take advantage of resource sharing techniques
  like connection pooling.
• 6. N-Tier systems can use various techniques for
  Identification, Authentication and Authorization
  and are therefore considered quite secure.
• .A a)12 b)256 c)125 d)36 e)135 f)15

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Aufbau SCEA
1. Multiple Choice Exam (48 Fragen, 75
Minuten, 68)
1. Multiple Choice Exam (48 Fragen, 75
Minuten, 68)
2. Architecture and Design Project (Projekt,
keine Zeitbegrenzung, 70)
3. Essay Exam (Fragen zum Projekt, 90
Minuten, Berechnung mit Projekt)
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Part II Architecture and Design Project (1)

• Aufgabe
• Produce scalable, enterprise level system
  blueprints - demonstrating your knowledge of IT
  architectures and J2EE!
• Flugbuchungssystem
• Ablöse- und Integrations-Projekt drei beteiligte
  Unternehmen
• Input
• Beschreibungen vom Business Analyst (Use Cases,
  Business Domain Model, Topologie,
  Schnittstellen-Spezifikationen)
• Mitschrift - Interview mit CIO/CEO
• Schwierigkeiten
• schlechte und teilweise widersprüchliche
  Requirements -gt Annahmen treffen
• keine ausgereiften UML-Tools
• schwierig, da kein Austausch zum Kunden und im
  Team!

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Part II Architecture and Design Project (2)

• Auszug aus Interview
• Interviewer Speaking of the Frequent Flyer
  system, why are you not replacing it with this
  rewrite?
• FBN CEO Let me handle this. We spent a half
  million dollars 6 months ago to get this system
  in place. I for one am not ready to throw it away
  and spend another half million to replace it. You
  will have to interface with what is there and if
  this project goes smoothly and the J2EE
  application servers prove to work, then we can
  talk about rewriting it.

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Part II Architecture and Design Project (3)

• Lösung
• Assumptions (Goal, Business, Technical, QoS)
• Architectural- and High-Level-Design-Decisions
• Technologie-Auswahl
• Persistenz-Strategie
• TX Management
• Security
• Schnittstellen
• Abdeckung QoS/NFR
• ...
• Modelling
• Class Diagram
• Component Diagram
• Deployment Diagram
• Sequence Diagrams

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Part II Architecture and Design Project (4)
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Aufbau SCEA
1. Multiple Choice Exam (48 Fragen, 75
Minuten, 68)
1. Multiple Choice Exam (48 Fragen, 75
Minuten, 68)
2. Architecture and Design Project (Projekt,
keine Zeitbegrenzung, 70)
3. Essay Exam (Fragen zum Projekt, 90
Minuten, Berechnung mit Projekt)
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Part III Essay Exam

• Aufgabe
• Show your knowledge of QoS requirements and
  defend your own architecture!
• Inhalte
• Wie erreicht ihre Architektur die geforderte
  Performance?
• Wie gut skaliert ihre Architektur?

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Eindrücke Erfahrungen (1)

• Zeitraum
• 4/03 7/03 Vorbereitung SCEA Part I
• 30.07.03 Prüfung Part I
• 9/03 12/03 Projekt SCEA Part II
• 15.12.03 Upload Part II
• 19.12.03 Prüfung Part III
• Negativ
• sehr zeitaufwändig
• komplexer Prozess, wenig Unterlagen
• schlechte Unterstützung durch Prometric
• Positiv
• Aufbau eines sehr umfangreichen Praxis-Wissens
• (lifelong learning)
• Herausforderung

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Eindrücke Erfahrungen (2)

• The SCEA is
• a software architect certification
• a J2EE technology certification
• a time consuming process, but a beneficial one...
• Jedes System hat eine Architektur! (auch
  wenn man sie nicht plant ?)

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Q A
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Certification Policies for Sun Professionals

• WRONG I bought 50 new Sun Blades.
• RIGHT I bought 50 new Sun Blade
  workstations.
• WRONG My business relies on Java.
• RIGHT My business relies on the Java
  Platform.
• WRONG Let the sun shine in your datacenter!
• RIGHT Bring Sun servers into your
  datacenter and make your net work.