Static vs dynamic routing in Computer Networks - Practice Questions

Challenge - 5 Problems

🧠 Conceptual

intermediate

Difference in Configuration Effort

Which statement best describes the difference in configuration effort between static and dynamic routing?

A Static routing requires manual setup for each route, while dynamic routing automatically adjusts routes based on network changes.

B Static routing automatically adjusts routes based on network changes, while dynamic routing requires manual setup.

C Both static and dynamic routing require manual setup for each route without automatic adjustments.

D Dynamic routing requires manual setup for each route, while static routing automatically adjusts routes based on network changes.

💡 Hint

Think about which routing type adapts to network changes without manual intervention.

Static routing needs manual configuration for every route and does not change unless manually updated. Dynamic routing protocols automatically discover and adjust routes as the network changes.

📋 Factual

intermediate

Routing Table Updates

How do static and dynamic routing differ in updating their routing tables?

A Both static and dynamic routing update routing tables automatically without manual changes.

B Static routing updates routing tables automatically; dynamic routing updates only when manually changed.

C Static routing updates routing tables only when manually changed; dynamic routing updates automatically through routing protocols.

D Neither static nor dynamic routing update routing tables automatically.

💡 Hint

Consider which routing type relies on protocols to learn about network changes.

Static routing tables remain fixed until manually changed by an administrator. Dynamic routing tables are updated automatically by routing protocols that share network information.

🔍 Analysis

advanced

Suitability for Large Networks

Which routing method is generally more suitable for large, complex networks and why?

A Static routing, because it automatically discovers new routes without manual intervention.

B Dynamic routing, because it automatically adapts to network changes and scales better in large networks.

C Static routing, because it requires less processing power and is easier to manage in large networks.

D Dynamic routing, because it requires manual updates for each route, ensuring precise control.

💡 Hint

Think about how networks change and grow over time and which routing type handles that best.

Dynamic routing protocols automatically adjust to network topology changes, making them better suited for large and complex networks. Static routing is less flexible and requires manual updates, which is impractical at scale.

❓ Comparison

advanced

Impact on Network Traffic

How does static routing compare to dynamic routing in terms of network traffic generated for route maintenance?

A Dynamic routing generates no network traffic for route maintenance, while static routing sends updates regularly.

B Static routing generates more network traffic than dynamic routing because it sends frequent updates.

C Both static and dynamic routing generate the same amount of network traffic for route maintenance.

D Static routing generates no additional network traffic for route maintenance, while dynamic routing generates traffic to exchange routing information.

💡 Hint

Consider whether routing updates are sent automatically or only manually configured.

Static routing does not send routing updates over the network, so it generates no extra traffic. Dynamic routing protocols send periodic or triggered updates to maintain accurate routing tables, generating additional network traffic.

❓ Reasoning

expert

Choosing Routing Type for a Small Office Network

A small office network has a few routers and rarely changes its network layout. Which routing method is most appropriate and why?

A Static routing, because it is simple to configure and the network rarely changes, so manual updates are manageable.

B Dynamic routing, because it requires constant updates and is better for networks that rarely change.

C Dynamic routing, because it eliminates the need for any manual configuration regardless of network size.

D Static routing, because it automatically adapts to network changes without manual intervention.

💡 Hint

Think about the trade-off between configuration effort and network stability.

For small, stable networks, static routing is preferred because it is straightforward to set up and maintain. Dynamic routing adds unnecessary complexity and overhead in such environments.

Practice

1. What is the main difference between static routing and dynamic routing?

easy

A. Static routing changes paths automatically, dynamic routing uses fixed paths.

B. Static routing uses fixed paths set manually, dynamic routing finds paths automatically.

C. Static routing is only for wireless networks, dynamic routing is for wired networks.

D. Static routing requires no configuration, dynamic routing requires manual setup.

Solution

1. Step 1: Understand static routing

   Static routing means the network paths are set manually by a person and do not change unless manually updated.

2. Step 2: Understand dynamic routing

   Dynamic routing uses protocols that automatically find and update the best paths as the network changes.

3. Final Answer:

   Static routing uses fixed paths set manually, dynamic routing finds paths automatically. -> Option B

4. Quick Check:

   Static = manual paths, Dynamic = automatic paths [OK]

Hint: Static = manual setup, dynamic = automatic updates [OK]

Common Mistakes:

• Confusing which routing type updates paths automatically
• Thinking static routing changes paths by itself
• Assuming static routing needs no configuration

2. Which of the following is the correct way to describe static routing?

easy

A. Routing paths are based on user traffic patterns.

B. Routing paths are discovered and updated automatically.

C. Routing paths are randomly assigned by the router.

D. Routing paths are manually configured and do not change unless updated.

Solution

1. Step 1: Identify static routing characteristics

   Static routing requires manual configuration of paths and these paths remain fixed unless changed by an administrator.

2. Step 2: Eliminate incorrect options

   Options describing automatic discovery, random assignment, or traffic-based paths do not apply to static routing.

3. Final Answer:

   Routing paths are manually configured and do not change unless updated. -> Option D

4. Quick Check:

   Static = manual and fixed paths [OK]

Hint: Static means manual setup, no automatic changes [OK]

Common Mistakes:

• Thinking static routing updates paths automatically
• Confusing static with dynamic routing
• Assuming static routing is random

3. Consider a network where a router uses dynamic routing protocols. What will happen if a link fails?

medium

A. The router will automatically find a new path to the destination.

B. The router will keep sending data through the failed link.

C. The router will shut down until the link is fixed.

D. The router will require manual reconfiguration to find a new path.

Solution

1. Step 1: Understand dynamic routing behavior on failure

   Dynamic routing protocols detect link failures and automatically update routing tables to find alternative paths.

2. Step 2: Analyze each option

   The router will keep sending data through the failed link. is incorrect because dynamic routing avoids failed links. The router will shut down until the link is fixed. is wrong; routers do not shut down. The router will require manual reconfiguration to find a new path. describes static routing behavior.

3. Final Answer:

   The router will automatically find a new path to the destination. -> Option A

4. Quick Check:

   Dynamic routing adapts automatically to failures [OK]

Hint: Dynamic routing adapts automatically to network changes [OK]

Common Mistakes:

• Assuming router stops working on link failure
• Confusing static routing behavior with dynamic
• Thinking manual intervention is always needed

4. A network administrator set up static routes but notices that some routes are not working after a network change. What is the likely problem?

medium

A. Static routes do not update automatically after network changes.

B. Dynamic routing protocols are interfering with static routes.

C. Static routes always update automatically, so the problem is hardware.

D. The router does not support static routing.

Solution

1. Step 1: Understand static routing limitations

   Static routes are fixed and do not change unless manually updated by the administrator.

2. Step 2: Identify cause of route failure

   After network changes, static routes may become invalid because they do not update automatically, causing routing failures.

3. Final Answer:

   Static routes do not update automatically after network changes. -> Option A

4. Quick Check:

   Static routes need manual updates after changes [OK]

Hint: Static routes stay fixed; update manually after changes [OK]

Common Mistakes:

• Assuming static routes update automatically
• Blaming hardware without checking routing setup
• Confusing static and dynamic routing behavior

5. In a large company with many branch offices that frequently change network connections, which routing method is best and why?

hard

A. Static routing, because it is simple and requires no updates.

B. Dynamic routing, because it requires manual configuration for each change.

C. Dynamic routing, because it automatically adapts to network changes.

D. Static routing, because it uses less CPU power on routers.

Solution

1. Step 1: Consider network size and change frequency

   Large networks with frequent changes need routing that adapts quickly without manual updates.

2. Step 2: Compare static and dynamic routing suitability

   Static routing is manual and not practical for frequent changes. Dynamic routing automatically updates paths, making it suitable for large, changing networks.

3. Final Answer:

   Dynamic routing, because it automatically adapts to network changes. -> Option C

4. Quick Check:

   Large, changing networks need dynamic routing [OK]

Hint: Use dynamic routing for large, changing networks [OK]

Common Mistakes:

• Choosing static routing for large, dynamic networks
• Thinking dynamic routing needs manual updates
• Ignoring network size and change frequency