Cisco 300-320 Online Practice Questions and Exam Preparation

Cisco 300-320 Online Questions & Answers

• Question 61:

  Which statement is correct regarding NBAR and NetFlow?

  A. NetFlow uses five key fields for the flow.
  B. NBAR examines data in Layers 3 and 4.
  C. NetFlow examines data in Layers 3 and 4.
  D. NBAR examines data in Layers 2 through 4.
  E. NetFlow examines data in Layers 2 through 4.
  E. NetFlow examines data in Layers 2 through 4.

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  NetFlow is a passive technology that monitors network activity, typically from OSI Layers 2 through 4. NBAR is an active technology that can be used to validate or reclassify ToS marking based on packet inspection in Layers 3 through 7.

• Question 62:

  Voice and video-conferencing applications that support multistreaming use which protocol?

  A. TCP
  B. RTP
  C. Multipath TCP
  D. SCTP
  D. SCTP

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  SCTP : Stream Control Transmission Protocol https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipapp/configuration/12-4/iap-12-4-book/iap-sctp.html

• Question 63:

  In which OSI layer does IS-IS operate?

  A. Layer 1
  B. Layer 2
  C. Layer 3
  D. Layer 4
  B. Layer 2

• Question 64:

  Which option is a common cause of congestion found in a campus network?

  A. input serialization delay
  B. output serialization delay
  C. Rx-queue starvation
  D. Tx-queue starvation
  D. Tx-queue starvation

• Question 65:

  What network technology provides Layer 2 high availability between the access and distribution layers?

  A. HSRP
  B. MEC
  C. EIGRP
  D. GLBP
  B. MEC

• Question 66:

  During the integration of a new company, a network engineering team discovers that IP address space overlaps, between the two company networks.

  Which two technologies can be used to allow overlapping IP addresses to coexist on shared network infrastructure? (Choose two)

  A. OTV
  B. VPN
  C. HSRP
  D. NAT
  E. VRF
  D. NAT
  E. VRF

• Question 67:

  An engineer is designing a network using RSTP. Several devices on the network support only legacy STP. Which outcome occurs?

  A. RSTP and STP choose the protocol with the best performance.
  B. RSTP and STP interoperate and fast convergence is achieved.
  C. RSTP and STP are not compatible and legacy ports error disable.
  D. RSTP and STP interoperate, but the fast convergence is not used.
  D. RSTP and STP interoperate, but the fast convergence is not used.

• Question 68:

  Which four Cisco proprietary Spanning Tree Protocol enhancements are supported with rapid per- VLAN Spanning-Tree plus? (Choose four.)

  A. PortFast
  B. UplinkFast
  C. loop guard
  D. root guard
  E. BPDU guard
  F. BackboneFast
  A. PortFast
  C. loop guard
  D. root guard
  E. BPDU guard

• Question 69:

  A designer should have which three technologies in the network before configuring MPLS Layer 3 VPNs? (Choose three.)

  A. MPLS
  B. LDP
  C. Cisco Express Forwarding
  D. VSS
  E. vPC
  F. VRRP
  A. MPLS
  B. LDP
  C. Cisco Express Forwarding

• Question 70:

  What are two characteristics of Cisco Global Site Selector? (Choose two.)

  A. It helps verify end-to-end path availability.
  B. It provides traffic rerouting in case of disaster.
  C. HSRP, GLBP, and VRRP can be clients of GSS.
  D. BGP must be the routing protocol between the distributed data centers.
  E. DNS responsiveness is improved by providing centralized domain management.
  B. It provides traffic rerouting in case of disaster.
  E. DNS responsiveness is improved by providing centralized domain management.