Question 1easymatching
Full question →Match each network service to its primary purpose.
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easymatchingObjective-mapped
Match each network service to its primary purpose.
Common exam trap
Common exam trap: answer the scenario, not the keyword
A common exam trap is confusing the primary functions of these IP services. For example, candidates might incorrectly think DHCP resolves names like DNS or that Syslog assigns IP addresses like DHCP. Another trap is overlooking the importance of NTP for time synchronization, assuming it is optional. Misunderstanding these roles can lead to incorrect matching and poor network design decisions. Remember, DNS resolves names, DHCP assigns IP configuration, NTP synchronizes time, and Syslog exports logs; mixing these up is a frequent mistake on the CCNA exam.
Technical deep dive
How to think about this question
DNS is a fundamental IP service that maps domain names to IP addresses, allowing users and applications to use easy-to-remember names instead of numeric IPs. In Cisco networks, DNS is essential for resolving names in routing protocols, management, and application access. Without DNS, devices would require manual IP address entry, which is error-prone and inefficient. DHCP automates the assignment of IP addresses, subnet masks, default gateways, and DNS server information to hosts. Cisco routers and switches can act as DHCP servers or relay agents, facilitating dynamic network configuration and reducing administrative overhead. DHCP leases addresses for a limited time, allowing efficient reuse of IP addresses in large networks. NTP maintains synchronized time across all network devices, which is critical for accurate log timestamps, security protocols, and troubleshooting. Cisco devices use NTP to ensure consistency in time-dependent operations. Syslog complements this by exporting log messages with timestamps, enabling centralized monitoring and historical analysis of network events. Misconfigured time can lead to confusing logs and security issues, making NTP and Syslog integration vital in Cisco environments.
KKey Concepts to Remember
- DNS resolves human-readable domain names into IP addresses to enable devices to locate each other on a network.
- DHCP dynamically assigns IP addresses and network configuration parameters to hosts to simplify network management.
- NTP synchronizes the clocks of all network devices to ensure consistent timestamps for logs and security protocols.
- Syslog exports log messages from network devices to centralized servers for monitoring and troubleshooting network events.
- Cisco devices can act as DHCP servers or relay agents to facilitate dynamic IP address assignment within networks.
- Accurate time synchronization via NTP is critical for correlating events and maintaining security in Cisco network environments.
- DNS is essential for routing protocols and management tasks that rely on hostname resolution in Cisco networks.
- Misunderstanding the distinct roles of DNS, DHCP, NTP, and Syslog leads to common exam mistakes and network misconfigurations.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Related practice questions
Related 200-301 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
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More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
Question 1
A router learns the same prefix from both OSPF and EIGRP. Which route is installed by default?
Question 2
A router shows this output: R1#show ip ospf neighbor Neighbor ID Pri State Dead Time Address Interface 10.1.1.2 1 FULL/DR 00:00:34 192.168.12.2 GigabitEthernet0/0 10.1.1.3 1 2WAY/DROTHER 00:00:39 192.168.12.3 GigabitEthernet0/0 Which statement is correct?
Question 3
What is the OSPF metric called?
Question 4
A non-root switch has two uplinks toward the root bridge. One path has a lower total STP cost than the other. What role will the lower-cost uplink have?
Question 5
A router interface applies this ACL inbound: 10 deny tcp any any eq 80 20 permit ip any any A user reports that web browsing to a server by IP address fails, but ping works. Which statement best explains the behavior?
Question 6
A router learns route 198.51.100.0/24 from OSPF with AD 110 and also has a static route to the same prefix configured with AD 150. Which route is installed?
FAQ
Questions learners often ask
What does this 200-301 question test?
DNS resolves human-readable domain names into IP addresses to enable devices to locate each other on a network.
What exam trap should I watch out for?
Common exam trap: answer the scenario, not the keyword: A common exam trap is confusing the primary functions of these IP services. For example, candidates might incorrectly think DHCP resolves names like DNS or that Syslog assigns IP addresses like DHCP. Another trap is overlooking the importance of NTP for time synchronization, assuming it is optional. Misunderstanding these roles can lead to incorrect matching and poor network design decisions. Remember, DNS resolves names, DHCP assigns IP configuration, NTP synchronizes time, and Syslog exports logs; mixing these up is a frequent mistake on the CCNA exam.
What should I do if I get this 200-301 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
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