Podcast
Questions and Answers
What is the primary focus when starting a network design process?
What is the primary focus when starting a network design process?
- Establishing a budget
- Selecting network devices
- Analyzing business and technical goals (correct)
- Surveying the physical environment
In the context of structured design, what aspect receives significant attention?
In the context of structured design, what aspect receives significant attention?
- Implementing security measures
- Physical architecture of devices
- Understanding user communities and their needs (correct)
- Maximizing equipment utilization
When developing a network model, what does the logical model represent?
When developing a network model, what does the logical model represent?
- Detailed user requirements and timelines
- Specific technologies being used
- Basic building blocks divided by function (correct)
- Physical locations of network devices
What layers of the OSI model should be prioritized during the initial stages of network design?
What layers of the OSI model should be prioritized during the initial stages of network design?
What does SDLC stand for in the context of systems development?
What does SDLC stand for in the context of systems development?
What is an important step in analyzing business goals and constraints during the network design process?
What is an important step in analyzing business goals and constraints during the network design process?
Which statement best describes the relationship between logical and physical models in network design?
Which statement best describes the relationship between logical and physical models in network design?
What is a key aspect of top-down network design beyond merely connecting devices?
What is a key aspect of top-down network design beyond merely connecting devices?
What is the focus of Phase 1 in network design?
What is the focus of Phase 1 in network design?
Which activity is performed during the logical network design phase?
Which activity is performed during the logical network design phase?
Which of the following is NOT a business constraint mentioned for network projects?
Which of the following is NOT a business constraint mentioned for network projects?
What should be prioritized based on fiscal goals in recent business priorities?
What should be prioritized based on fiscal goals in recent business priorities?
What is a primary objective in Phase 4 of network design?
What is a primary objective in Phase 4 of network design?
During initial meetings with a client, which type of information should be collected first?
During initial meetings with a client, which type of information should be collected first?
What does the PDIOO network life cycle stand for?
What does the PDIOO network life cycle stand for?
Which recent business priority addresses maintaining continuous service during disruptions?
Which recent business priority addresses maintaining continuous service during disruptions?
What is a critical factor in determining the success of a project?
What is a critical factor in determining the success of a project?
Which document is important to acquire for understanding the organization's structure?
Which document is important to acquire for understanding the organization's structure?
What should be cataloged to ensure security measures are adequately addressed?
What should be cataloged to ensure security measures are adequately addressed?
What should be considered when defining the scope of a design project?
What should be considered when defining the scope of a design project?
What is the primary focus when gathering information for network design?
What is the primary focus when gathering information for network design?
Which type of applications should be included in the detailed information gathering process?
Which type of applications should be included in the detailed information gathering process?
What can lead to project failure concerning upper management visibility?
What can lead to project failure concerning upper management visibility?
Why is it essential to talk to both technical and management staff?
Why is it essential to talk to both technical and management staff?
Flashcards
Top-Down Network Design
Top-Down Network Design
A network design approach aligning business needs with technology, considering business goals and constraints, instead of just connecting devices or contacting providers.
Business Goals
Business Goals
Objectives for a company, such as increasing revenue, reducing costs, or improving communication.
Business Constraints
Business Constraints
Limitations on a project, including budget, staffing, scheduling, and internal policies.
SDLC
SDLC
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Analyze Requirements (Network Design)
Analyze Requirements (Network Design)
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Logical Design (Network Design)
Logical Design (Network Design)
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Physical Design (Network Design)
Physical Design (Network Design)
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Network Applications Analysis
Network Applications Analysis
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Network Design Steps
Network Design Steps
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Information Gathering
Information Gathering
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Customer Meetings
Customer Meetings
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Project Scope
Project Scope
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OSI Model
OSI Model
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Layer 7 (Application Layer)
Layer 7 (Application Layer)
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Criticality (Network applications)
Criticality (Network applications)
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Network Topology
Network Topology
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Addressing/Naming Models
Addressing/Naming Models
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Protocols
Protocols
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Security Policies
Security Policies
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Study Notes
Top-Down Network Design: Analyzing Business Goals and Constraints
- Network design should align business needs with available technology to maximize organizational success. It's more complex than simply connecting devices (LAN) or contacting service providers (WAN).
- Begin by analyzing business and technical goals, exploring organizational structures to understand where users and applications reside. Prioritize Layer 7 (Application) and above.
Structured Design and Systems Development Life Cycles (SDLC)
- Structured design emphasizes understanding data flow, data types, user locations, and needs.
- It involves developing a logical model (functional building blocks) before the physical model (specific devices and technologies).
- SDLC refers to the Systems Development Life Cycle, not Synchronous Data Link Control. Systems evolve over time.
Top-Down Network Design Steps
- Analyze Requirements: Analyze business and technical goals, constraints, existing networks, and network traffic.
- Develop Logical Design: Design network topology, addressing/naming models, protocols, security, and management strategies.
- Develop Physical Design: Select technologies and devices for campus and enterprise networks.
- Test, Optimize, and Document Design: Thoroughly test, optimize performance, and create comprehensive documentation.
- The PDIOO Network Life Cycle (Plan, Design, Implement, Operate, Optimize) is cyclical, not linear.
Business Goals and Constraints
- Business Goals: Increase revenue, reduce costs, improve communication, shorten development cycles, expand globally, build partnerships, and enhance customer support.
- Recent Business Priorities: Mobility, security, resilience, business continuity, fiscal constraints, and low-latency for real-time applications.
- Business Constraints: Budget, staffing, scheduling, and internal politics/policies.
Information Gathering and Customer Meetings
- Before meeting clients, gather information about their products/services, financial stability, customers/suppliers/competitors, and competitive advantage.
- In meetings, obtain a concise project statement, understand project goals, success/failure implications, and criticality. Identify potential biases, talk to both technical and management staff.
- Obtain organizational charts (to understand user locations and structure), security policies (to understand design limitations and impact). Catalog network assets for security purposes.
Defining the Scope of the Design Project
- Project scope can range from small (e.g., VPN access) to large (e.g., enterprise network redesign).
- The OSI model can clarify the scope (e.g., new application vs. new protocol vs. new data link).
- Ensure the scope aligns with budget, staffing capabilities, and timelines.
- Gather detailed information about applications (current and future), user communities, data stores, protocols, and current network architecture/performance.
Network Applications Analysis
- A systematic approach should be used when analyzing network applications, focusing first on business requirements and constraints.
- Create a summary table naming each application, categorizing it by type, noting any new applications, criticality and adding comments.
Review Questions (Answer)
- The main phases are: Analyze Requirements, Develop Logical Design, Develop Physical Design, and Test, Optimize, and Document Design.
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Description
This quiz evaluates your understanding of top-down network design principles and the Systems Development Life Cycle (SDLC). It covers the alignment of business goals with network architecture and emphasizes the importance of a structured approach to design and implementation. Get ready to test your knowledge on these critical IT concepts!
