H31-611 Online Practice Questions and Answers
On an SDN network, network devices only need to be responsible for data forwarding.
A. TRUE
B. FALSE
In the SDN architecture, which of the following protocols is used for communication between the control layer and application layer?
A. OpenFlow
B. NETCONF
C. RESTful
D. NetStream
Which OpenStack component is responsible for managing virtual networks and determining the ID of the server that the VM IP address.
A. Nova
B. Neutron
C. Cinder
D. NetMatrix
The CE-SPUs of the CE12800 on an SDN network employs which of the following redundancy methods?
A. 1:1
B. 2+1
C. 3+1
D. 5+1
Currently, the packet forwarding efficiency of Layer 3 switches is greatly improved. Which of the following may be the cause?
A. By using higher-performance hardware
B. By using the "routing once and switching multiple times" forwarding technology
C. By using packet-to-packet forwarding technology
D. By dividing the VLAN to effectively suppress broadcast storms and save bandwidth and other system resource.
Which of the following protocols is defined by the network layer of the OSI protocol suite?
A. ES-ES
B. RIP
C. OSPF
D. IS-IS
Which of the following statements about SNMP are not true? (Choose all that apply.)
A. SNMP is an application layer protocol that requires reliable TCP at the transport layer to provide services.
B. SNMP is used to manage information transmitted between the two points, making it easy for administrators to preform operations.
C. SNMP uses the client/server model.
D. There are three SNMP protocol versions. Currently, only SNMPv3 supports community name-based security mechanisms.
Which of the following statements are true about NetStream packet formats? (Choose all that apply.)
A. The V5 format does not support traffic aggregation, putting processing pressure on the NSC and NDA.
B. The V8 format supports traffic aggregation, but can output only aggregated IPv4 traffic data.
C. The V8 format is based on templates and can output both IPv4 and IPv6 traffic data.
D. The V9 format can output IPv4, IPv6 and MPLS traffic data.
Which of the following statements about NetStream logs are true? (Choose all that apply.)
A. NetStream logs have V5, V8, and V9 formats. The difference between V5 and V9 is that V5 is fixed and does not support traffic aggregation, whereas V9 supports traffic aggregation and data format customization.
B. NetStream packets use UDP encapsulation and unlike SFlow, NetStream does not support traffic sampling.
C. A field within NetStream packets can distinguish whether traffic is inbound or outbound.
D. The start time of a NetStream flow is the time that elapses between January 1, 1970 at 00:00:00 to the moment the flow is created and expressed in seconds.