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NEW QUESTION # 179
To facilitate true end-to-end QoS on an IP-network, the IETF has defined two models: IntServ and DiffServ Which protocol is used by both models?
Answer: C
NEW QUESTION # 180
Refer to the exhibit. AJI links are P2P Layer 3. A high availability application is synchronizing data between host A and host B. To increase chance of delivery the same data is sent twice from host A on two different NICs toward the two NICs on host B.
Which solution must be deployed in the network to ensure that any failure in the network does not trigger data loss on host B?
Answer: A
NEW QUESTION # 181 
Refer to the exhibit. An architect must design an enterprise WAN that connects the headquarters with 22 branch offices. The number of remote sites is expected to triple in the next three years. The final solution must comply with these requirements:
* Only the loopback address of each of the enterprise CE X and Y routers must be advertised to the interconnecting service provider cloud network.
* The transport layer must carry the VPNv4 label and VPN payload over the MP-BGP control plane.
* The transport layer must not be under service provider control.
Which enterprise WAN transport virtualization technique meets the requirements?
Answer: C
Explanation:
* B (MPLS over BGP over mGRE):This design allows enterprises to run MPLS VPNs across their own infrastructure (Overlay VPN) while using MP-BGP for control plane distribution of VPNv4 routes. The mGRE tunnel structure allows scalability as branches grow, while MPLS VPN labels ensure traffic separation.
Other options explained:
* A: EIGRP OTT is not scalable for large VPN deployments.
* C: DMVPN per VRF becomes complex with high scale growth.
* D: Point-to-point GRE per VRF lacks scalability for 60+ sites.
NEW QUESTION # 182
Company XYZ has designed their network to run GRE over IPsec on their Internet-based VPN to connect two sites. Which IPsec tunneling feature can they enable to optimize the data flow while ensuring that the headers contain no duplicate IP addresses?
Answer: C
Explanation:
B (Transport Mode in IPsec Phase II):When GRE is running over IPsec,IPsec Transport Modeis often preferred. In Transport Mode, only the payload (GRE encapsulated packet) is encrypted and authenticated, while the original IP header remains untouched. This eliminates redundant IP headers, avoiding duplicate addressing and reducing overhead - optimizing bandwidth efficiency across the Internet VPN.
GRE provides the tunneling function, while IPsec in Transport Mode secures the GRE-encapsulated traffic.
Transport Mode is negotiated duringIPsec Phase II (Quick Mode), where actual data protection parameters are established.
Other options explained:
A:Phase I is for establishing secure channels, not for data encapsulation.
C:Tunnel Mode would encapsulate the entire packet (including GRE header), adding unnecessary additional IP headers in this GRE over IPsec design.
D:Tunnel Mode does not apply at Phase I - Phase I is only for IKE negotiation.
NEW QUESTION # 183
Identity and access management between multiple users and multiple applications has become a mandatory requirement for Company XYZ to fight against ever-increasing cybersecurity threats. To achieve this, federated identity services have been deployed to provide Single Sign-On and Multi-Factor Authentication.
Which protocol can be used by Company XYZ to provide authentication and authorization services?
Answer: C
Explanation:
* D (SAML2.0):SAML2.0 is widely used for federated identity management in enterprise environments, supporting Single Sign-On (SSO) across multiple applications and domains.
Other options explained:
* A: OAuth2 is primarily for authorization, not identity federation.
* B: OpenID Connect extends OAuth2 for authentication but is more common for consumer web apps than enterprise SSO.
* C: OpenID is older and largely replaced by OpenID Connect.
NEW QUESTION # 184
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