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Q136. 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 stub areas increase the size of the LSDB with the addition of Type 3 and 5 LSAs
B. OSPF not so stubby areas are particularly useful as a simpler form of summarization
C. OSPF stub areas are always insulated from external changes
D. OSPF totally stubby areas cannot distinguish among ABRs for the best route to destinations outside the area
E. OSPF stub areas can distinguish among ASBRs for destinations that are external to the OSPF domain
Answer: C,D
Q137. Why is QoS important for in-band management?
A. It supports remote management when traffic volume is high.
B. It supports proper routing.
C. It supports network security against DoS attacks and worm outbreaks.
D. It supports network redundancy.
Answer: A
Q138. Which of these is a recommended practice with trunks?
A. use ISL encapsulation
B. use 802.1q encapsulation
C. set ISL to desirable and auto with encapsulation negotiate to support ILS protocol negotiation
D. use VTP server mode to support dynamic propagation of VLAN information across the network
Answer: B
Q139. Which type of application traffic typically requires prioritization across networks and may use a DSCP value of 34 (AF41)?
A. voice
B. interactive video
C. call signaling
D. routing
E. streaming video
F. network management
Answer: B
Q140. Which two design concerns must be addressed when designing a multicast implementation? (Choose two.)
A. only the low-order 23 bits of the MAC address are used to map IP addresses
B. only the low-order 24 bits of the MAC address are used to map IP addresses
C. only the high-order 23 bits of the MAC address are used to map IP addresses
D. only the low-order 23 bits of the IP address are used to map MAC addresses
E. the 0x01004f MAC address prefix is used for mapping IP addresses to MAC addresses
F. the 0x01005e MAC address prefix is used for mapping IP addresses to MAC addresses
Answer: A,F
Q141. Refer to the exhibit.
The Cisco Nexus 1000V in the VMware vSphere solution effectively creates an additional access layer in the virtualized data center network; which of the following 1000V characteristics can the designer take advantage of?
A. Offloads the STP requirement from the external Access layer switches
B. If upstream access switches do not support vPC or VSS the dual-homed ESX host traffic can still be distributed using virtual port channel host mode using subgroups automatically discovered through CDP
C. Allows transit traffic to be forwarded through the ESX host between VMNICs
D. Can be divided into multiple virtual device contexts for service integration, enhanced
security, administrative boundaries, and flexibility of deployment
Answer: B
Q142. Which type of connectivity is required for VPLS?
A. full mesh
B. partial mesh
C. star
D. bus
E. ring
Answer: A
Q143. Which route summarization most efficiently reduces perceived network complexity that is composed of subnetworks ranging from 172.16.20.0/24 to 172.16.36.0/24?
A. 172.16.8.0/21
B. 172.16.8.0/19
C. 172.16.20.0/20
D. 172.16.0.0/18
E. 172.16.20.0/19
Answer: D
Q144. What is one reason to implement Control Plane Policing?
A. allow OSPF routing protocol to advertise routes
B. protect the network device route processor from getting overloaded by rate limiting the incoming control plane packets
C. allow network devices to generate and receive packets
D. protect the data plane packets
Answer: B
Q145. Which option is a benefit of the vPC+ feature?
A. Cisco FabricPath is not required in the network domain.
B. This feature provides fault domain separation.
C. Nonfabric devices, such as a server or a classic Ethernet switch, can be connected to two fabric switches that are configured with vPC.
D. The control plane and management plane are combined into one logical plane.
Answer: C
Q146. Which two WAN technologies support IEEE 802.1Q, site-to-site connectivity, and point-to-point connectivity between two offices? (Choose two.)
A. Ethernet over MPLS
B. VPLS
C. Layer 3 MPLS
D. DSL
E. cable
Answer: A,B
Q147. Which two ways to manage scalability issues inside an IBGP domain with 20 or more routers are recommended? (Choose two.)
A. Configure route reflectors.
B. Use OSPF instead of EIGRP as an underlying routing protocol.
C. Create a full mesh at Layer 1.
D. Configure confederations.
E. Configure static routes between all routers.
Answer: A,D
Q148. Which two types of authentication mechanisms can be used by VRRP for security? (Choose two.)
A. SHA-1
B. MD5
C. SHA-256
D. plaintext authentication
E. PEAP
Answer: B,D
Q149. What are two characteristics of Server Load Balancing router mode? (Choose two.)
A. The design supports multiple server subnets.
B. An end-user sees the IP address of the real server.
C. SLB routes between the outside and inside subnets.
D. The source or destination MAC address is rewritten, but the IP addresses left alone.
E. SLB acts as a "bump in the wire" between servers and upstream firewall or Layer 3 devices.
Answer: A,C
Q150. An organization is designing the IP allocation of a new site. It currently has 12 separate IP
segments. Each segment must be /24, accommodate 25% of growth, and be easily summarized.
Which summarized IP block can be subnetted to meet these requirements?
A. /18
B. /19
C. /20
D. /21
Answer: C