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| Section | Objectives |
|---|---|
| Network Security | - Access control and authentication - Network hardening techniques - Security concepts and threats |
| Network Implementation | - Wireless networking - Routing technologies - Switching technologies - Network storage and virtualization |
| Networking Concepts | - Ports, protocols, and services - IPv4 and IPv6 addressing - OSI model and TCP/IP model - Network topologies and types (LAN, WAN, WLAN) |
| Network Operations | - Monitoring and optimization - Business continuity and disaster recovery - Network documentation and diagrams |
| Network Troubleshooting | - Tools and diagnostic techniques - Troubleshooting methodology - Common network issues |
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NEW QUESTION # 382
Which of the following routing protocols is most commonly used to interconnect WANs?
Answer: C
Explanation:
Border Gateway Protocol (BGP): BGP is the most commonly used routing protocol for interconnecting WANs, especially across the internet. It is used for exchanging routing information between autonomous systems (AS), making it the backbone protocol for large-scale WANs.
NEW QUESTION # 383
Which of the following is an XML-based security concept that works by passing sensitve information about users, such as log-in information and attributes, to providers.
Answer: A
Explanation:
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.
NEW QUESTION # 384
A network engineer is setting up a new VoIP network for a customer. The current network is segmented only for computers and servers. No additional switchports can be used in the new network. Which of the following does the engineer need to do to configure the network correctly? (Select two).
Answer: B,E
Explanation:
To support VoIP on a network with limited switchports, the engineer should configure voice VLANs and enable 802.1Q tagging. Voice VLANs allow VoIP traffic to be prioritized and isolated from data traffic even when sharing the same physical port. 802.1Q is used for VLAN tagging, enabling multiple VLANs over a single physical link.
From Andrew Ramdayal's guide:
"Voice VLANs allow IP phones and computers to share the same physical switch port while keeping their traffic separate. 802.1Q is used to tag VLAN traffic so that it can be appropriately routed and prioritized."
NEW QUESTION # 385
Which of the following recovery strategies should a company implement to ensure data center services are quickly restored and accessible after a disaster occurs?
Answer: B
Explanation:
An active-passive approach keeps a standby environment available to take over when the primary data center fails, allowing services to be restored and accessed quickly after a disaster.
NEW QUESTION # 386
Which of the following steps in the troubleshooting methodology is used to strategically eliminate known issues before determining the main source of the reported issue?
Answer: D
Explanation:
Testing the theory to determine the cause is the troubleshooting step used to strategically eliminate possible causes before confirming the main source of the issue. After the problem is identified and a theory of probable cause is established, the technician must test that theory. If the test confirms the theory, the technician can move toward creating a plan of action. If the theory is not confirmed, the technician should establish a new theory or escalate the issue.
The CompTIA Network+ N10-009 troubleshooting methodology emphasizes a structured process to avoid guessing and unnecessary changes. Testing a theory may include checking configurations, replacing a suspected cable, reviewing logs, verifying connectivity, testing DNS resolution, checking VLAN assignments, or comparing results against known-good systems. This process helps narrow the issue by ruling out causes that do not match the evidence.
Identifying the problem is the first step and involves gathering information. Establishing a theory means forming a likely explanation. Establishing a plan of action happens after the cause is confirmed. Therefore, the step that best matches strategically eliminating known issues is testing the theory to determine the cause.
NEW QUESTION # 387
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