642-874 試験問題を無料オンラインアクセス

Which of the following is a recommended practice of a data center core?

• A.The Cisco Express Forwarding hashing algorithm is the default, based on the IP address and Layer 4 port.
• B.Core layer should run BGP along with an IGP because iBGP has a lower administrative distance than any IGP.
• C.Server-to-server traffic always remains in the core layer.
• D.The core infrastructure should be in Layer 3.

Which option does the FabricPath technology use to create loop-free Layer 2 networks?

• A.FSTP
• B.fabric tags
• C.STP
• D.TTL

OSPF stub areas are an important tool for the Network designer; which of the following two should be considered when utilizing OSPF stub areas? (Choose two)

• A.OSPF totally stubby areas cannot distinguish among ABRs for the best route to destinations outside the area
• B.OSPF stub areas can distinguish among ASBRs for destinations that are external to the OSPF domain
• C.OSPF not so stubby areas are particularly useful as a simpler form of summarization
• D.OSPF stub areas are always insulated from external changes
• E.OSPF stub areas increase the size of the LSDB with the addition of Type 3 and 5 LSAs

Distinct, physical redundancy within a network layer is a key characteristic that contributes to the high availability of the hierarchical network design. Which of the following is not an examples of this model?

• A.Servers using network adapter teaming software connected to dual-attached access switches
• B.A single SAN fabric with redundant uplinks and switches
• C.SAN extension with dual fabrics such as a yellow VSAN and a blue VSAN utilized via multipath software
• D.Redundant power supplies and hot-swappable fan trays in Aggregate switches

Which of these is a recommended practice with trunks?

• A.use ISL encapsulation
• B.set ISL to desirable and auto with encapsulation negotiate to support ILS protocol negotiation
• C.use 802.1q encapsulation
• D.use VTP server mode to support dynamic propagation of VLAN information across the network