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| Section | Objectives |
|---|---|
| Infrastructure Design (Layer 2 / Layer 3) | - Layer 2 technologies
|
| MPLS and VPN Architectures | - MPLS fundamentals
|
| Multicast and Advanced Services | - Network services
|
| Routing and Path Control | - Routing protocol design
|
| End-to-End Enterprise Architecture Scenarios | - Large-scale enterprise design
|
| Network Design Methodology and Principles | - Requirements gathering and analysis
|
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NEW QUESTION # 118
You have been asked to design a remote access VPN solution to support up to 2000 devices. You must ensure that only corporate assets are allowed to connect to the VPN, and users must authenticate to gain access based on their user role. Users must use a password that they are already using to access existing applications. A user may not always use the same device to access the VPN. Which two options combined meet the requirements? (Choose two)
Answer: C,F
Explanation:
The design requires scalability, centralized credential management, device independence, and role-based access:
* B (Central authentication directory): A centralized directory (such as Active Directory, RADIUS, or LDAP) allows the VPN solution to leverage existing user credentials, support role-based access control, and scale easily.
* F (SSL VPN): Provides remote access VPN services that support a variety of client devices, including unmanaged or personal devices, without requiring device certificates. SSL VPN is well-suited for scenarios where users may not always use the same device.
Other options explained:
* A: Local usernames/passwords do not scale to thousands of users and lack centralized policy control.
* C/E: Certificates would require device management and may not be feasible if users switch devices.
* D: IPsec VPN can work, but typically requires more complex client configuration and may not support flexible device usage as well as SSL VPN.
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NEW QUESTION # 119
In search of a system capable of hosting, monitoring compiling. and testing code in an automated way, what can be recommended to the organization?
Answer: A
NEW QUESTION # 120
You are designing the routing design for two merging companies that have overlapping IP address space.
Which of these must you consider when developing the routing and NAT design?
Answer: A
NEW QUESTION # 121
A large enterprise cloud design team is evaluating different cloud consumption models. What is an example of typical PaaS limitations or concerns that should be considered during service design?
Answer: C
NEW QUESTION # 122
A company is adopting IPv6 in a dual-stack campus network. The first IPv6-only application is now hosted in the data center. To prevent a malicious user from masquerading as the IPv6 default gateway, which two mechanisms should be used? (Choose two)
Answer: B,D
Explanation:
#Comprehensive and Detailed Explanation (CCDE v3.1 aligned):
* A. IPv6 RA Guard:This feature helps mitigate rogue router advertisements (RAs), which attackers can use to spoof the default gateway in an IPv6 environment. RA Guard drops unauthorized or unexpected RAs at the access layer switch ports, preventing malicious devices from advertising themselves as routers.
* E. Port ACLs (PACLs):Port-based ACLs can restrict which devices are allowed to send or receive RA packets on switch ports. By tightly controlling which sources can send traffic (including RA messages), port ACLs help prevent spoofing attempts.
Other Options:
* #B. IPv6 Snooping:Not a standard or widely supported security feature; it is sometimes used synonymously with device tracking but is not a direct mitigation for spoofed RAs.
* #C. IPv6 Device Tracking:Useful for monitoring IP-to-MAC bindings, but it does not prevent spoofing or gateway impersonation.
* #D. IPv6 Address Glean:Primarily used for learning IPv6 addresses from traffic for things like DHCPv6 relay; not a security feature.
CCDE Blueprint Alignment:
Topic: Security, automation, and policy integration in design
Subdomain: IPv6 security, access control, rogue device prevention.
Let me know if you'd like the next question explained!
NEW QUESTION # 123
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