- (Topic 3)
A user notifies a network administrator about losing access to a remote file server. The network administrator is able to ping the server and verifies the current firewall rules do not block access to the network fileshare. Which of the following tools would help identify which ports are open on the remote file server?
Correct Answer:
B
nmap is the tool that would help identify which ports are open on the remote file server. nmap stands for Network Mapper, which is a free and open-source tool that can perform various network scanning and discovery tasks. nmap can help identify which ports are open on a remote device by sending probes or packets to different ports and analyzing the responses. nmap can also provide information about the operating system, services, versions, firewalls, or vulnerabilities of the remote device. nmap can be useful for network administrators, security professionals, or hackers to monitor, audit, or attack network devices. References: [CompTIA Network+ Certification Exam Objectives], Nmap - Free Security Scanner For Network Exploration & Security Audits
- (Topic 1)
A user tries to ping 192.168.1.100 from the command prompt on the 192.168.2.101 network but gets the following response: U.U.U.U. Which of the following needs to be configured for these networks to reach each other?
Correct Answer:
B
A default gateway is a device that routes traffic from one network to another network, such as the Internet. A default gateway is usually configured on each host device to specify the IP address of the router that connects the host’s network to other networks. In this case, the user’s device and the destination device are on different networks (192.168.1.0/24 and 192.168.2.0/24), so the user needs to configure a default gateway on their device to reach the destination device. References: https://partners.comptia.org/docs/default-source/resources/comptia-network-n10-008-exam-objectives-(2-0), https://www.techopedia.com/definition/25761/default-gateway
- (Topic 3)
A network technician crimped a length of IJTP with TIAElA-568A on one end and TINE-IA- 5688 on the other. Which of the following cable types did the technician create?
Correct Answer:
A
The cable type that the technician created is a crossover cable. A crossover cable is a type of twisted-pair cable that has the transmit and receive pairs reversed on one end. A crossover cable is used to connect two devices of the same type, such as two switches or two computers, without using a hub or a switch. A crossover cable can be made by crimping one end of the cable with TIA/EIA-568A standard and the other end with TIA/EIA- 568B standard, or vice versa. These standards define the color coding and pin
assignments for RJ-45 connectors on twisted-pair cables. References: CompTIA Network+ N10-008 Certification Study Guide, page 53; The Official CompTIA Network+ Student Guide (Exam N10-008), page 2-4.
- (Topic 3)
Which of the following network topologies involves sending all traffic through a single point?
Correct Answer:
C
Hub-and-spoke is a network topology where each node connects to a central switching device, such as a hub or a switch. All traffic between the nodes must pass through the central device, which acts as a single point of communication and control. Hub-and-spoke topology is simple, easy to manage, and cost-effective, but it also has drawbacks, such as low redundancy, high latency, and scalability issues.
References:
✑ Network Topologies – N10-008 CompTIA Network+ : 1.21
✑ CompTIA Network+ Certification Exam Objectives, page 92
- (Topic 3)
A network engineer turned on logging to assist with troubleshooting a suspected configuration issue informative log information?
Correct Answer:
C
DEBUG is the log level that provides the most informative log information for troubleshooting a suspected configuration issue. Logging is a feature that allows network devices to record events and messages related to their operation and status. Logging can help network engineers to monitor, diagnose, and resolve network problems. Log levels are categories that indicate the severity or importance of a log message. Different log levels provide different amounts of detail and verbosity. DEBUG is the lowest log level, which means it provides the most detailed and verbose information about every action and event that occurs on a network device. DEBUG can help network engineers to identify configuration errors, misbehaving processes, or unexpected outcomes. However, DEBUG can also generate a lot of noise and overhead, which can affect the performance and availability of the network device. Therefore, DEBUG should be used sparingly and only when necessary. References: [CompTIA Network+ Certification Exam
Objectives], Understanding Logging Levels - Cisco
