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| Section | Objectives |
|---|---|
| Network Implementation | - Routing technologies - Network storage and virtualization - Switching technologies - Wireless networking |
| Network Troubleshooting | - Common network issues - Tools and diagnostic techniques - Troubleshooting methodology |
| Network Operations | - Business continuity and disaster recovery - Monitoring and optimization - Network documentation and diagrams |
| Networking Concepts | - Network topologies and types (LAN, WAN, WLAN) - Ports, protocols, and services - OSI model and TCP/IP model - IPv4 and IPv6 addressing |
| Network Security | - Access control and authentication - Network hardening techniques - Security concepts and threats |
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NEW QUESTION # 382
A network engineer configures a NIC that has an IP address of 192.168.123.232. Which of the following classes is this address an example of?
Answer: A
Explanation:
The IPv4 address 192.168.123.232 falls within the Class C range under classful addressing. In classful terms, Class C addresses have a first octet from 192 to 223, which makes any address starting with 192.x.x.x a Class C address. Network+ (N10-009) networking concepts cover IPv4 addressing fundamentals and commonly reference class ranges as foundational knowledge, even though modern networks primarily use CIDR (classless) subnetting rather than strict classful boundaries.
This address is also within a well-known private IPv4 block: 192.168.0.0/16 (RFC1918 private addressing), which is frequently used for internal networks and NIC configurations where addresses are not routable on the public internet.
To eliminate the distractors: Class A uses first octet 1-126, Class B uses 128-191, and Class D (224-239) is reserved for multicast. Since the first octet here is 192, it maps to Class C, making option C correct.
NEW QUESTION # 383
Which of the following protocols has a default administrative distance value of 90?
Answer: C
Explanation:
EIGRP (Enhanced Interior Gateway Routing Protocol) has a default administrative distance (AD) value of 90 for internal routes. The administrative distance is used to rate the trustworthiness of routing information received from different routing protocols. EIGRP, developed by Cisco, has an AD of 90, which is lower than that of RIP (120) and OSPF (110), making it more preferred if multiple protocols provide a route to the same destination.Reference: CompTIA Network+ study materials.
NEW QUESTION # 384
A company ' s Chief Information Security Officer requires that servers and firewalls have accurate time stamps when creating log files so that security analysts can correlate events during incident investigations.
Which of the following should be implemented?
Answer: B
Explanation:
The correct solution is NTP (Network Time Protocol). Accurate timestamps across servers, firewalls, and network devices are critical for correlating logs during incident response. NTP synchronizes device clocks to a trusted time source, ensuring consistency across the network.
A). Syslog centralizes logs but does not synchronize time.
B). SMTP is email transfer, unrelated to time.
D). SNMP monitors devices but does not correct time discrepancies.
By implementing NTP, analysts can ensure that logs from different devices are time-aligned, which is essential for reconstructing attack timelines and detecting anomalies.
References (CompTIA Network+ N10-009):
Domain: Network Operations - Time synchronization, NTP, log correlation.
NEW QUESTION # 385
Which of the following steps of the troubleshooting methodology is most likely to involve talking to a user who opens a ticket?
Answer: D
Explanation:
Identifying the problem is the first step in the troubleshooting methodology and often involves communicating with the user who reported the issue to gather details, symptoms, and the context of the problem.
Verifying full system functionality happens after a solution is applied. Establishing a theory of probable cause is based on observations and initial analysis, typically after gathering information.
Implementing the solution is an action step following diagnosis.
Talking to the user to gather information occurs during problem identification.
NEW QUESTION # 386
An IT technician is configuring a switch in a large office environment. The switch needs to be able to segment traffic and create separate broadcast domains. Which of the following features should the technician enable to meet these requirements?
Answer: C
Explanation:
VLANs segment network traffic and create separate broadcast domains on a switch, meeting the requirement for isolating traffic in a large office environment.
NEW QUESTION # 387
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