"Jitter is the loss of packets due to an overworked WAP. Jitter shows up as choppy conversations over a video call, strange jumps in the middle of an online game-pretty much anything that feels like the network has missed some data. Latency is when data stops moving for a moment due to a WAP being unable to do the work. This manifests as a Word document that stops loading, for example, or an online file that stops downloading."

The data link layer is responsible for defining the format of data on the network and providing physical transmission of data. Devices that operate at this layer include switches and network interface cards (NICs). Encapsulations that are used at this layer include frames, which are units of data that contain a header, payload, and trailer. Frames are used to identify the source and destination of data on the network and to perform error detection. Reference: CompTIA Network+ N10-008 Certification Study Guide, page 9; The Official CompTIA Network+ Student Guide (Exam N10-008), page 1-6.

netstat -a is a command that displays information about active TCP connections and listening ports on a system. A network administrator can use netstat -a to check if the database engine is listening on a certain port, as well as verify if there are any connections established to or from that port. Reference: https://www.comptia.org/blog/what-is-netstat

SSO stands for Single Sign-On, which is a technology that allows users to log in once and access multiple applications without entering their credentials again1.
SSO simplifies the user experience and enhances security by reducing password fatigue and enforcing password policies1.
SSO is an example of an identity and access management (IAM) solution that integrates with different authentication methods and protocols2.
LDAP, EAP, and TACACS+ are not correct answers because they are not authentication methods that allow access to multiple applications after logging on. They are protocols that facilitate authentication, authorization, and accounting (AAA) functions3.
LDAP stands for Lightweight Directory Access Protocol, which is a protocol that provides access to directory services that store information about users, groups, and devices3.
EAP stands for Extensible Authentication Protocol, which is a framework that supports various authentication methods, such as passwords, certificates, tokens, and biometrics3.
TACACS+ stands for Terminal Access Controller Access-Control System Plus, which is a protocol that provides centralized AAA services for network devices and users3.
Reference:
What is SSO? | How single sign-on works
Single Sign-On - CompTIA Network+ Certification (N10-008): The Total Course Network+ (Plus) Certification | CompTIA IT Certifications

Wireless client isolation is a feature on wireless routers that limits the connectivity between wireless devices connected to the same network. It prevents them from accessing resources on other wireless or wired devices, as a security measure to reduce attacks and threats. This feature can be useful for guest and BYOD SSIDs, but it can also be disabled on the router's settings. Reference: https://www.howtogeek.com/179089/lock-down-your-wi-fi-network-with-your-routers-wireless-isolation-option/