CSS12-ST1-2025

How do firewall blocking symptoms differ from DNS failures?

• Complete network connectivity loss occurs across all devices
• Intermittent connectivity with IP address conflict error messages
• Specific applications and services cannot establish network connections
• Physical network cables show visible damage and disconnection

How do network trends help with proactive management?

• They eliminate need for regular connectivity testing procedures
• They help anticipate future issues and identify problems
• They reduce hardware costs by avoiding unnecessary upgrades
• They simplify network configuration by standardizing all settings

How do switches differ from routers in functionality?

• Switches connect devices within network segments managing traffic
• Switches direct data packets between different networks efficiently
• Switches control network traffic based on predetermined security rules
• Switches translate domain names into numerical IP addresses

How does TCP/IP ensure reliable communication across networks?

• It translates domain names into numerical IP addresses
• It transfers web pages between servers and browsers
• It provides accurate data transmission and routing capabilities
• It facilitates file transfers between computers over networks

How does layered troubleshooting approach improve problem identification?

• It starts with complex diagnostics before checking basics
• It focuses on software issues while ignoring hardware
• It progresses systematically from physical to higher layers
• It eliminates need for documentation and consistent procedures

How does packet loss affect overall network performance?

• It increases latency by adding delays to transmission
• It reduces the number of hops in routing
• It results in retransmissions and poor network performance
• It improves bandwidth utilization across network segments effectively

How does systematic terminal checking improve troubleshooting efficiency?

• It reduces physical inspection time by automating processes
• It ensures comprehensive coverage of all network devices
• It eliminates need for documentation and reporting procedures
• It bypasses complex diagnostics for faster problem resolution

How does traceroute help identify network connectivity problems?

• It sends ICMP echo requests to measure latency
• It shows intermediate routers and identifies delay locations
• It resolves domain names into corresponding IP addresses
• It tests physical cable connections between network devices

How would you measure network latency between devices?

• Count the number of hops in traceroute output
• Calculate packet loss percentage from ping statistics results
• Observe the time value in ping command output
• Monitor bandwidth utilization during peak usage hours

How would you troubleshoot intermittent network connectivity issues?

• Use nslookup to verify DNS resolution and server settings
• Check for IP address conflicts and refresh assignments
• Temporarily disable firewall to test connectivity and rules
• Inspect cables for damage and secure connection points