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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Advanced Enterprise Campus Networks | 25% | - Layer 3 campus design
- Layer 2 campus design
|
| Topic 2: Advanced Addressing and Routing Solutions | 25% | - IPv4 and IPv6 addressing design
|
| Topic 3: WAN for Enterprise Networks | 20% | - WAN resiliency and high availability - VPN design
|
| Topic 4: Software-Defined Access (SDA) | 5% | - Fabric design and deployment - Control plane and data plane design - SD-Access architecture |
| Topic 5: Network Services | 15% | - Quality of Service (QoS)
|
| Topic 6: Security Services | 10% | - Secure connectivity - Security architecture design
|
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NEW QUESTION # 174 
Refer to the exhibit. An engineer is designing a BGP solution for a client that peers with ISP1 for full Internet connectivity and with ISP2 for direct exchange of routes for several third parties. Which action, when implemented on the edge routers, enables the client network to reach the Internet through ISP1?
Answer: C
NEW QUESTION # 175
An engineer must establish a direct connection between two remote offices. The new connection must be established using a logical path, share a common broadcast domain, connect over private WAN, and have as little overhead as possible. Which technology must the engineer choose?
Answer: B
Explanation:
L2VPN is the correct technology because the requirement is for two remote offices to share a common broadcast domain across a private WAN with minimal overhead. A Layer 2 VPN service extends Ethernet or VLAN connectivity between customer sites while keeping the customer routing design independent of the provider core. From the customer perspective, the two sites can appear to be on the same Layer 2 segment, which satisfies the shared broadcast-domain requirement. GET VPN, IPsec, and GRE are Layer 3-oriented technologies. They can connect sites securely or provide tunneling, but they do not natively create a common Layer 2 broadcast domain between the offices. GRE also adds additional encapsulation overhead, and IPsec alone generally provides encrypted routed connectivity rather than an Ethernet service. For a simple direct logical path over a private WAN, an L2VPN service such as VPWS or VPLS is the appropriate design family.
Reference topics: L2VPN, VPWS, VPLS, Ethernet WAN services, broadcast-domain extension, private WAN connectivity.
NEW QUESTION # 176 
Refer to the exhibit. Which two solutions maximize the use of the links between the core and distribution layers? (Choose two.)
Answer: A,D
NEW QUESTION # 177
A network engineer must design a multicast solution based on these requirements:
* interactive communication
* must not use source trees
* users must register
* 100 multicast sources
Which solution must the company choose?
Answer: D
Explanation:
BIDIR-PIM is the correct multicast solution for interactive many-to-many communication with many sources when source trees must not be used. Bidirectional PIM is specifically designed for applications where receivers can also be senders and where the number of sources can grow without creating per-source multicast state throughout the network. Instead of building shortest-path trees for each source, BIDIR-PIM uses a shared tree rooted at the rendezvous point and forwards traffic bidirectionally along that tree. This reduces multicast routing-table growth and control-plane churn in environments with many active sources. PIM dense mode is not appropriate because it floods and prunes traffic and is inefficient at scale. Any-source multicast with PIM-SM may create source trees, which violates the requirement. MSDP is used to exchange source information between PIM-SM domains and is not itself the forwarding mode for this campus or WAN multicast design. Reference topics: BIDIR-PIM, many-to-many multicast, shared tree, multicast source scaling, PIM design.
NEW QUESTION # 178
In an SD-WAN architecture, which methods are used to bootstrap a vEdge router?
Answer: A
Explanation:
Section: WAN for Enterprise Networks
NEW QUESTION # 179
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