Refer to the exhibit. Based on the configuration, why are routers R1 and R2 not exchanging OSPF routes?
Exhibit:

A company needs to configure a new firewall and have only one public IP address to use in this firewall. The engineer need to configure the firewall with NAT to
handle inbound traffic to the mail server in addition to internet outbound traffic. Which options could he use ? (Choose Two)

Which one of these could you implement to sustain a large DDoS attack?

When a Cisco ASA adaptive security appliance is configured for active/standby failover, which MAC address is used for the active unit?

Which three of these are major scaling, sizing, and performance considerations for an IPsec design? (Choose three.)

The network engineering team is interested in deploying NAC within the enterprise network to enhance security. What deployment model should be used if the team
requests that the NAC be logically inline with clients?

Which STP feature can prevent other switches on the network from becoming the root switch, but still allow that interface to participate in STP otherwise?

Refer to the exhibit. Which recommended practice is applicable?
Exhibit:

Which path selection protocol is used by Fibre Channel fabrics?

Engineer is designing QoS for application. Which QoS architecture should he choose if application needs to have reserved bandwidth prior to sending data?