Which design benefit of Bridge Assurance is true?

A large enterprise network has a partial mesh network with multiples redundant links.
OSPF is used as IGP and it is implemented in a single-area. The network has slow convergence times and there is a high CPU utilization on the routers. Which solution can address these issues while ensuring that the network scales?

An enterprise company is attaching to a new Gigabit Ethernet-based link from the local service provider.
This connection must have a 150 Mbps committed information rate. For the design of this new service, which QoS mechanism must be used to ensure low packet loss within the service provider network?

Refer to the exhibit.

The server supports 802.1q and is running multiple VLANs on its NIC. Which two Layer 2 features should be applied to the network location identified by a circle? (Choose two.)

The Schuyler and Livingston Iron Works has been working on getting its network security under control.
It has set up VPN with IPSec links to its suppliers. It has installed network vulnerability scanners to proactively identify areas of weakness, and it monitors and responds to security events as they occur. It also employs extensive access control lists, stateful firewall implementations, and dedicated firewall appliances. The company has been growing very fast lately and wants to make sure it is up to date on security measures.
Which two areas of security would you advise the company to strengthen? (Choose two.)