Which of the following statements about NetStream logs are true? (Multiple Choice)
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 is expressed in seconds.
Answer:
ACD
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A
50%
B
50%
C
50%
D
50%
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Question 2
Which of the following statements are true about NetStream packet formats? (Multiple Choice)
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.
Answer:
B
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A
50%
B
50%
C
50%
D
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Question 3
Which of the following statements about NetStream data are true? (Multiple Choice)
A.
When using the V5 format, NetStream can export data packets before traffic aggregation.
B.
When using the V5 format, NetStream can export data packets after traffic aggregation.
C.
When using the V8 format, NetStream can export data packets before traffic aggregation.
D.
When using the V8 format, NetStream can export data packets after traffic aggregation.
Answer:
D
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A
50%
B
50%
C
50%
D
50%
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Question 4
NetStream is implemented by NE software. When the traffic is heavy, device performance may be affected.
A.
TRUE
B.
FALSE
Answer:
A
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A
50%
B
50%
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Question 5
Which of the following are parts of the SNMP network management model? (Multiple Choice)
A.
NMS
B.
Agent
C.
SOA
D.
MIB
Answer:
C
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A
50%
B
50%
C
50%
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Question 6
Which of the following statements about SNMP are not true? (Multiple Choice)
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 perform operations.
C.
SNMP uses the client/server model.
D.
There are three SNMP protocol versions. Currently, only SNMPv3 supports community name- based security mechanisms.
Answer:
B
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A
50%
B
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Question 7
Which of the following network entities can send SNMP GetRequest packets?
A.
Agent
B.
Client
C.
NMS
Answer:
A
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A
50%
B
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C
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Question 8
In SNMP, managed devices use which of the following messages to actively send alarms to the NMS?
A.
Trap
B.
Inform
C.
Get
D.
Set
Answer:
D
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A
50%
B
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Question 9
Which of the following statements about NETCONF are true? (Multiple Choice)
A.
NETCONF provides a protection locking mechanism to prevent operations performed by multiple users from conflicting with each other.
B.
NETCONF can query one or multiple records in a table and requires multiple interactions during this process.
C.
NETCONF uses XML coding for system compatibility and extensibility.
D.
NETCONF uses existing security protocols to ensure network security, and is not bound to any specific security protocols.
Answer:
D
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A
50%
B
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Question 10
NETCONF supports which of the following operations? (Multiple Choice)
A.
get
B.
lock
C.
close
D.
kill
Answer:
A
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A
50%
B
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Question 11
SNMP uses connectionless UDP as the transmission protocol, whereas NETCONF uses connection- oriented TCP.
A.
TRUE
B.
FALSE
Answer:
B
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Question 12
Which of the following statements are true about OpenFlow interface information reporting? (Multiple Choice)
A.
After the OpenFlow channel is successfully established, the controller actively queries port information from FPs.
B.
The controller sends Multipart Request messages to query port information.
C.
FPs respond with a Multipart Reply message for batch delivery of port information.
D.
When a port changes, the corresponding FP actively sends a Flow Mod message to report the port change information.
Answer:
AC
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A
50%
B
50%
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Question 13
On an SDN network, OpenFlow connection backup data mainly includes which of the following? (Multiple Choice)
A.
Collected forwarder interface information
B.
Binding relationship between the logical interface of the controller and the forwarder's physical interface
C.
Connection management information of the forwarder
D.
Collected forwarder VLAN information
Answer:
CD
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A
50%
B
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C
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Question 14
OpenFlow channel establishment and maintenance involves which of the following messages? (Multiple Choice)
A.
Collected forwarder interface information
B.
Features Request message
C.
Echo Request message
D.
PortStatus message
Answer:
AB
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A
50%
B
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Question 15
In the SDN VXLAN solution, when an OpenFlow connection between the controller and a forwarder is torn down, the forwarder retains the static MAC address and ARP entries so that traffic can be normally forwarded.