CompTIA N10-008 Practice Test - Questions Answers, Page 62

The availability concept that the network technician should consider when selecting new network hardware is RTO (Recovery Time Objective). RTO is a metric that defines the maximum acceptable time for restoring a system or service after a disruption or failure. RTO is based on the impact and cost of downtime for the business and its customers. RTO helps determine the level of redundancy and backup needed for network hardware to ensure high availability and minimize downtime. Reference: CompTIA Network+ N10-008 Certification Study Guide, page 346; The Official CompTIA Network+ Student Guide (Exam N10-008), page 13-9.

The record type that would be used to define where SIP (Session Initiation Protocol) is found is A (Address). A record is a type of DNS (Domain Name System) record that maps a domain name to an IPv4 address. SIP is a protocol that enables voice over IP (VoIP) communication, such as voice calls or video conferencing. SIP uses domain names to identify endpoints or servers involved in a communication session. Therefore, an A record is needed to resolve the domain name of a SIP endpoint or server to its IPv4 address. Reference: CompTIA Network+ N10-008 Certification Study Guide, page 154; The Official CompTIA Network+ Student Guide (Exam N10-008), page 6-8.

The technician was identifying the problem by gathering information with this note. This is the first step of the troubleshooting methodology, which is a systematic process of finding and resolving issues in a network or system. By gathering information, the technician can understand the symptoms, scope, and impact of the problem, as well as collect relevant data from various sources, such as users, logs, tools, or documentation. The note shows that the technician was asking questions to the user, checking the network status and configuration, and reviewing previous tickets to gather information about the problem. Reference: [CompTIA Network+ Certification Exam Objectives], Troubleshooting Methodology - CompTIA Network+ N10-007 - 1.4 | Professor Messer IT Certification Training Courses

Layer 4 is where TCP/IP port numbers identify which network application is receiving the packet and where it is applied. Layer 4 is also known as the transport layer in the TCP/IP model or the OSI model.

The transport layer is responsible for providing reliable or unreliable end-to-end data transmission between hosts on a network. The transport layer uses port numbers to identify and multiplex different applications or processes that communicate over the network. Port numbers are 16-bit numbers that range from 0 to 65535 and are divided into three categories: well-known ports (0-1023), registered ports (1024-49151), and dynamic ports (49152-65535). Some examples of well-known port numbers are 80 for HTTP, 443 for HTTPS, and 25 for SMTP. Reference: [CompTIA Network+ Certification Exam Objectives], Transport Layer - an overview | ScienceDirect Topics

The hostname and ipconfig commands should be used to get the required information about the PC and share it with other users so they can connect to the printer. The hostname command displays the name of the computer on a network. The ipconfig command displays the IP configuration of the computer, including its IP address, subnet mask, default gateway, and DNS servers. These information are necessary for other users to locate and connect to the shared printer on the network. For example, other users can use the UNC path \\hostname\printername or \\ipaddress\printername to access the shared printer. Reference: [CompTIA Network+ Certification Exam Objectives], How to Share a Printer in Windows 10

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.

CompTIA Network+ N10-008 Certification Exam Objectives, page 51

CompTIA Network+ Cert Guide: Wireless Networking, page 12

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.

Password Attacks -- N10-008 CompTIA Network+ : 4.21

CompTIA Network+ Cert Guide: Security Concepts and Tools, page 25

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Spanning tree is a protocol that prevents network loops by dynamically disabling or enabling switch ports based on the network topology. Network loops can cause intermittent connectivity issues, such as broadcast storms, MAC address table instability, and multiple frame transmission. By enabling spanning tree, the network administrator can ensure that there is only one active path between any two network devices at any given time.

CompTIA Network+ N10-008 Certification Exam Objectives, page 91

CompTIA Network+ Cert Guide: Switching and Virtual LANs, page 172

DNS (Domain Name System) is a service that translates domain names into IP addresses. Corporate intranet websites are usually hosted on private IP addresses that are not accessible from the public internet. Therefore, the user's laptop needs to use the correct DNS server that can resolve the intranet domain names to the private IP addresses. If the user changed the network parameters at the airport and did not revert them back, the laptop might be using a public DNS server that does not have the records for the intranet websites. This would cause the user to access all internet websites but not corporate intranet websites.

An Overview of DNS - N10-008 CompTIA Network+ : 1.61

DNS Configuration -- CompTIA A+ 220-11012

CompTIA Network+ Certification Exam Objectives, page 53