Question 1easymatching
Full question →Match each protocol or service to its primary function.
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easymatchingObjective-mapped
Match each protocol or service to its primary function.
Common exam trap
Common exam trap: answer the scenario, not the keyword
A common exam trap is confusing the primary functions of DNS, NTP, Syslog, and DHCP by mixing their roles. For example, a candidate might incorrectly think DHCP resolves hostnames like DNS or that NTP manages IP addressing like DHCP. This confusion often arises because all these protocols are foundational network services but serve distinct purposes. Misunderstanding these roles can lead to selecting incorrect matches, especially under time pressure. Remembering that DNS translates names to IP addresses, NTP synchronizes time, Syslog collects event logs, and DHCP assigns IP addresses helps avoid this trap.
Technical deep dive
How to think about this question
DNS (Domain Name System) is a critical network protocol that translates human-friendly domain names into IP addresses, enabling devices to locate servers and services on the network. In Cisco environments, DNS is essential for resolving hostnames to IP addresses, facilitating communication and management. Without DNS, users and devices would need to remember numeric IP addresses, which is impractical in large networks. NTP (Network Time Protocol) synchronizes the clocks of network devices to a precise time source, ensuring consistent timestamps across logs and events. Accurate timekeeping is vital for troubleshooting, security protocols, and coordinating distributed systems. Cisco devices use NTP to maintain synchronized time, which helps in correlating logs and managing network events effectively. Syslog is a protocol used to send event messages from network devices to a centralized logging server. It helps network administrators monitor device status, detect faults, and audit network activity. DHCP (Dynamic Host Configuration Protocol) automates the assignment of IP addresses and other network configuration parameters to client devices, simplifying network management and reducing configuration errors. Understanding these protocols’ distinct roles is crucial for CCNA candidates to correctly identify their primary functions and apply them in real-world Cisco network scenarios.
KKey Concepts to Remember
- DNS resolves domain names to IP addresses, enabling devices to locate network resources by name rather than numeric addresses.
- NTP synchronizes device clocks across the network to ensure consistent time for logging and security functions.
- Syslog transports event messages from network devices to centralized servers for monitoring and troubleshooting purposes.
- DHCP dynamically assigns IP addresses and network configuration parameters to clients, reducing manual configuration errors.
- Each protocol serves a unique network function, and confusing their roles can lead to misconfiguration or troubleshooting errors.
- Cisco devices rely on these protocols to maintain network operability, security, and manageability.
- Understanding the distinct purpose of each protocol helps in designing and managing Cisco networks effectively.
- Correctly matching protocols to their functions is essential for passing CCNA exam questions related to network services.
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
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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 domain names to IP addresses, enabling devices to locate network resources by name rather than numeric addresses.
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 DNS, NTP, Syslog, and DHCP by mixing their roles. For example, a candidate might incorrectly think DHCP resolves hostnames like DNS or that NTP manages IP addressing like DHCP. This confusion often arises because all these protocols are foundational network services but serve distinct purposes. Misunderstanding these roles can lead to selecting incorrect matches, especially under time pressure. Remembering that DNS translates names to IP addresses, NTP synchronizes time, Syslog collects event logs, and DHCP assigns IP addresses helps avoid this trap.
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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