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QUESTION 1
In the IP packet, the Tos field is used for QoS marking. In the Tos field, the first 6 bits are used to mark the
DSCP.
A. Correct
B. Error
Correct Answer: A
QUESTION 2
The traditional packet loss policy uses the Tail-Drop method, which causes the TcP to be globally
synchronized.
A. Correct
B. Error
Correct Answer: A
QUESTION 3
Among the following options, the highlight of the business arrangement belonging to the Agile Controller is:
(multiple choice)
A. Based on the Layer 3 GRE tunnel, the networking and deployment of service devices are more flexible.
B. Business orchestration through topology visualization, simple configuration, and convenient management
C. Adding or deleting service devices does not change the forwarding route of the live network, and does
not change the physical topology of the live network.
D. Automatically analyze and orchestrate the business without manual maintenance
Correct Answer: ABC
QUESTION 4
In the following application scenarios, the scenario of guest access management that is not part of the Agile
Controller is:
A. Customer communication, communication, visits, etc., intervene in the corporate network, access to
corporate public resources or the Internet
B. Ordinary people access the Internet through a network provided by public world units
C. Customers spend in the enterprise, connect to the corporate network to access the internet
D. Company employees travel to branch offices, link branch network access company network
Correct Answer: D
QUESTION 5
The main functions of the VIM management module in NFV include resource discovery, resource allocation,
resource management, and ()
A. Resource Scheduling
B. Resource monitoring
C. Recycle
D. Troubleshooting
Correct Answer: D
QUESTION 6
The main technical genre of SDN advocates that SDN adopts a layered open architecture, so the advocacy
and definition of centralized architecture and Openflow is:
A. ONF
B. IEIF
C. ETSI
D. ITU
Correct Answer: A
QUESTION 7
To avoid the global synchronization of the CP, the congestion avoidance mechanisms that can be used are:
(multiple choice)
A. RED
B. WRED
C. Tail-Drop
D. WFQ
Correct Answer: AB
QUESTION 8
Which of the following is the command to configure the SDN controller to listen for addresses?
A. Openflow listening- ip 1.1.1.1
B. Sdn controller soure-address 1.1.1.1
C. Controller-ip 1.1.1.1
D. Sdn listening-ip 1.1.1.1
Correct Answer: A
QUESTION 9
The dynamic IP address assigned to the client by the DHCP server. There is usually a certain lease term,
so the description of the lease term is wrong:
A. The lease renewal timer is 50% of the total lease period. When the “lease update timer” expires, the
DHCP client must update the IP address.
B. The rebinding timer is 87.5% of the total lease period.
C. If the “rebinding timer” expires but the client has not received a response from the server, it will always
send a DHCP REQUEST message to the DHCP server that has previously assigned an IP address,
knowing that the total lease period has expired.
D. During the lease period, if the client receives a DHCP NAK message, the client will immediately stop
using the P address and return to the initialization state to re-apply for a new IP address.
Correct Answer: C
QUESTION 10
Which of the following application environments is NFVs often deployed in?
A. data center
B. Network node
C. User access side
D. Client/server
Correct Answer: ABC
Correct Answer: C
QUESTION 10
Which of the following application environments is NFVs often deployed in?
A. data center
B. Network node
C. User access side
D. Client/server
Correct Answer: ABC
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