New Release N10-008 CompTIA Network+ Questions

Syslog is a protocol that allows network devices to send event messages to a centralized server or console for logging and analysis1. Syslog can help a technician to determine if a router port is flapping by providing timestamps, severity levels, and descriptions of the events that occur on the router, such as interface up or down, link state change, or error messages. Syslog can also help to identify the cause and frequency of the port flapping and troubleshoot the issue.

Audit logs are records of actions or events that occur on a system or network, such as user login, file access, configuration change, or policy violation. Audit logs can help to monitor and verify the activities and behaviors of users, devices, or applications on a system or network. Audit logs can also help to detect and investigate security incidents, compliance issues, or performance problems. However, audit logs do not provide detailed information about router port flapping.

NetFlow is a protocol that collects and analyzes network traffic data for monitoring and troubleshooting purposes2. NetFlow can help to identify the sources, destinations, volumes, and types of traffic on a network. NetFlow can also help to optimize network performance, security, and capacity planning. However, NetFlow does not provide detailed information about router port flapping.

Traffic logs are records of network traffic that pass through a device or application, such as a firewall, proxy, or web server. Traffic logs can help to monitor and filter the network traffic based on rules or policies. Traffic logs can also help to detect and prevent malicious traffic, such as malware, attacks, or unauthorized access. However, traffic logs do not provide detailed information about router port flapping.

This is the most likely cause of the user’s connection issues, because the ARP table of the switch shows that there are two devices with the same IP address of 192.168.1.10, but different MAC addresses. This indicates that there is an IP address conflict on the network, where two devices are trying to use the same IP address. This can cause intermittent connectivity issues, as the switch may not be able to forward packets to the correct destination .

A network technician is configuring a wireless network that consists of multiple APS for better coverage and allows roaming between the APS. Which of the following types of SSIDs should the technician configure?

• Basic Service Set
• Independent Basic Service Set
• Extended Service Set
• Distribution System Service

Answer: C

An extended service set (ESS) is a type of SSID that allows multiple access points (APs) to share the same SSID and provide seamless roaming for wireless clients. An ESS consists of two or more basic service sets (BSSs), which are individual APs with their own SSIDs. A distribution system (DS), such as a wired Ethernet LAN, connects the BSSs and enables data transfer between them. A wireless client can associate with any AP in the ESS and move from one BSS to another without losing connectivity or reauthenticating.

References:

• CompTIA Network+ N10-008 Certification Exam Objectives, page 51
• CompTIA Network+ Cert Guide: Wireless Networking, page 12

Which of the following passwords would provide the best defense against a brute-force attack?

• ThislsMyPasswordForWork
• Qwerty!@#$
• Password! 1
• T5!8j5

Answer: D

A brute-force attack is a method of guessing passwords by trying every possible combination of characters until the correct one is found. The longer and more complex the password, the harder it is to crack by brute-force. A password that provides the best defense against a brute-force attack should have a combination of uppercase and lowercase letters, numbers, and special characters, and should be as long as possible. The password T5!8j5 meets these criteria, while the other options are either too short, too simple, or too common.

References:

• Password Attacks – N10-008 CompTIA Network+ : 4.21
• CompTIA Network+ Cert Guide: Security Concepts and Tools, page 25

https://www.pearsonitcertification.com/articles/article.aspx?p=3021579 &seqNum=2

The policy that outlines the software and hardware requirements for using personally owned devices to conduct business is BYOD (Bring Your Own Device). BYOD is a practice that allows employees to use their own devices, such as laptops, tablets, or smartphones, to access corporate resources and applications. BYOD can offer benefits such as increased productivity, flexibility, and satisfaction for employees, as well as reduced costs for employers. However, BYOD also poses challenges and risks, such as security, compatibility, and support issues. Therefore, a BYOD policy is needed to define the rules and expectations for using personal devices in a business environment. A BYOD policy typically covers topics such as device eligibility, security requirements, acceptable use, data ownership, privacy, and liability. References: CompTIA Network+ N10-008 Certification Study Guide, page 362; The Official CompTIA Network+ Student Guide (Exam N10-008), page 14-2.

• A VLAN (Virtual Local Area Network) is a logical grouping of devices that share the same broadcast domain, regardless of their physical location or connection. VLANs can improve network performance, security, and management by separating different types of traffic, such as data, voice, and video1.
• A VoIP (Voice over Internet Protocol) phone is a device that uses the Internet to transmit voice calls, instead of the traditional phone lines. VoIP phones require a network connection, an IP address, and a gateway to communicate with other VoIP devices or phone systems2.
• A DHCP (Dynamic Host Configuration Protocol) server is a device that automatically assigns IP addresses and other network configuration parameters to devices that request them. DHCP simplifies network administration and avoids IP conflicts3.
• A switchport is a physical interface on a switch that connects to a network device, such as a VoIP phone, a computer, or another switch. A switchport can be configured to belong to a specific VLAN or to carry traffic from multiple VLANs4.
• A gateway is a device that connects different networks and enables communication between them. A gateway can also perform protocol conversion, such as translating between VoIP and analog signals5.
• A route is a path that a packet takes to reach its destination. A route consists of a destination network, a next-hop device, and a metric. A router is a device that forwards packets based on their destination IP addresses and the routing table.
• In order to allow a newly installed VoIP phone to operate correctly, the network administrator needs to assign the phone’s switchport to the correct VLAN. This will ensure that the phone can communicate with the DHCP server and obtain an IP address that belongs to the same network as the phone system. This will also isolate the voice traffic from the data traffic and improve the quality of service.
• Statically assigning the phone’s gateway address is not enough to allow the phone to operate correctly, as the phone still needs an IP address and a subnet mask to communicate with other devices on the network. Moreover, statically assigning network parameters can be tedious and prone to errors, especially for a large number of devices.
• Configuring a route on the VoIP network router is not necessary to allow the phone to operate correctly, as the phone and the phone system are on the same network and do not need to cross any routers. Configuring a route would only be needed if the phone and the phone system were on different networks and needed to communicate through a router.
• Implementing a VoIP gateway is not required to allow the phone to operate correctly, as the phone and the phone system are both VoIP devices and use the same protocol. Implementing a VoIP gateway would only be needed if the phone or the phone system needed to communicate with a non-VoIP device or system, such as a traditional phone line or a public switched telephone network (PSTN).

References:

• 1: VLAN
• 2: VoIP Phone
• 3: DHCP
• 4: Switchport
• 5: Gateway
• : [Route]
• : [VoIP VLAN Configuration]
• : [Static vs Dynamic IP Addressing]
• : [Routing Basics]
• : [VoIP Gateway]