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DHCP Options: DHCP options allow additional configuration parameters, such as the address of a TFTP server, to be provided to clients during the DHCP lease process. This is essential for VoIP phones to locate the server for configuration files.

Exclusions (A): Prevents certain IP addresses from being assigned by DHCP but does not direct devices to servers.

Lease time (B): Determines how long an IP address is assigned but does not impact TFTP settings.

Scope (D): Defines a range of IP addresses but does not include additional server information.

Out-of-band (OOB) management refers to using a dedicated management network that is physically separate from the regular data network. This management network uses a different set of IP addresses to ensure that management traffic is isolated from user data traffic, providing a secure way to manage network devices even if the main network is down or compromised.References: CompTIA Network+ study materials. ​

Security Assertion Markup Language (SAML) is an XML-based standard used for exchanging authentication and authorization data between parties, particularly between an identity provider (IdP) and a service provider (SP). SAML is commonly used in Single Sign-On (SSO) solutions to pass sensitive user information, such as login credentials and attributes, securely between the identity provider and the service provider.

SAML (Security Assertion Markup Language): Facilitates web-based authentication and authorization, allowing users to access multiple services with a single set of credentials.

XML-based: Uses XML to encode the authentication and authorization data, ensuring secure transmission of user information.

Identity Federation: Enables secure sharing of identity information across different security domains, making it ideal for enterprise SSO solutions.

Network References:

CompTIA Network+ N10-007 Official Certification Guide: Covers authentication protocols, including SAML.

Cisco Networking Academy: Provides training on identity management and federation technologies.

Network+ Certification All-in-One Exam Guide: Explains SAML and its role in secure identity management and SSO.