The OpenFlow protocol in SDN architecture is led and actively promoted by the IETF.
- A . TRUE
- B . FALSE
A
Explanation:
Reference: https://www.mdpi.com/1999-5903/6/2/302/htm
In terms of the SDN architecture, the ONF does not recommend carriers to change the existing network architecture, but the IETF recommends carriers to do so.
- A . TRUE
- B . FALSE
Which of the following descriptions are true about SDN? (Choose all that apply.)
- A . SDN is OpenFlow.
- B . SDN supports forwarding-control separation.
- C . SDN provides programmable open interfaces.
- D . SDN is short for software-defined networking.
Which of the following are true about SDN? (Choose all that apply.)
- A . In the SDN architecture, the underlying switches need to provide only the most basic and simple functions.
- B . SDN is applicable to cloud computing providers and enterprises facing substantially increasing workloads.
- C . SDN’s forwarding-control separation architecture standardizes and simplifies network devices.
- D . SDN cannot implement flexible and centralized control and cloudfield application awareness.
In the SDN architecture, which of the following belong to the application layer? (Choose all that apply.)
- A . OpenStack
- B . Third-party APP platform
- C . SNC
- D . NetMatrix
Which of the following is the port number used by VXLAN packets?
- A . 4786
- B . 4787
- C . 4788
- D . 4789
On an SDN network, network devices only need to be responsible for data forwarding.
- A . TRUE
- B . FALSE
A
Explanation:
Reference: https://actfornet.com/huawei-cloud/sdn.html
On a VXLAN network, which of the following statements are NOT true about VNIs? (Choose all that apply.)
- A . A VNI is a VXLAN network identifier used to differentiate VXLAN segments.
- B . One VNI identifies one tenant, regardless of whether the tenant contains multiple end users.
- C . VMs of different VXLAN segments cannot directly communicate with each other Layer 2.
- D . A VNI consists of 16 bits.
BD
Explanation:
Reference: https://support.huawei.com/enterprise/en/doc/EDOC1100065756/edc8c8ee/vxlan-networkarchitecture
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
A
Explanation:
Reference: https://support.huawei.com/enterprise/en/doc/EDOC1000150290/8d15e063/overview-ofopenflow
The OpenStack architecture comprises which of the following components? (Choose all that apply.)
- A . Nova
- B . Neutron
- C . Cinder
- D . NetMatrix
Which OpenStack component is responsible for managing virtual networks and determining the ID of the server that the VM IP address, VM MAC address, and VM belong to?
- A . Nova
- B . Neutron
- C . Cinder
- D . NetMatrix
A
Explanation:
Reference: https://docs.openstack.org/nova/queens/admin/networking-nova.html
Which of the following interfaces are provided by SDN reflect programmability? (Choose all that apply.)
- A . Northbound interface
- B . Southbound interface
- C . Eastbound-westbound interface
- D . API PLC programming interface
The SDN controller has a global view of the entire network.
- A . TRUE
- B . FALSE
A
Explanation:
Reference: https://books.google.com.pk/books?id=0dhwDwAAQBAJ&pg=PA421&lpg=PA421&dq=huawei+SDN+controller+has+a+global+view+of+the+entire+network&source=bl&ots=tQRdkT5nB&sig=ACfU3U1isE1ggNHUJpXiPOfI4sjQPPXSg&hl=en&sa=X&ved=2ahUKEwitrdnVi4PnAhVBQBoKHY3oBUgQ6AEwC3oECAoQAQ#v=onepage&q=huawei%20SDN%20controller%20has%20a%20global%20view%20of%20the%20entire% 20network&f=false
SDN advocates overlay service cloudification and underlay hardware standardization.
- A . TRUE
- B . FALSE
A
Explanation:
Reference: https://www-file.huawei.com/-/media/corporate/pdf/publications/communicate/79/issue79en.pdf
Which of the following functions does ONOS have? (Choose all that apply.)
- A . Reduces the service provider’s CAPEX and OPEX
- B . Enables network agility
- C . Helps service providers migrate the existing network to dedicated devices
- D . Provides a reliable, flexible, and high-performance SDN control plane
AD
Explanation:
Reference: https://www.slideshare.net/AmeerSameer/open-network-operating-system-onos
The SFUs of the NE40E-X8A used on an SDN network employ which of the following redundancy methods?
- A . 1:1
- B . 1+1
- C . 2+1
- D . 3+1
D
Explanation:
Reference: https://actfornet.com/huawei-net/core-router.html
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
CE series switches on an SDN network cannot use service interfaces for stacking configuration.
- A . TRUE
- B . FALSE
Regarding the CE series switches on an SDN network, which of the following statements are true about their application in data centers? (Choose all that apply.)
- A . A CE series switch can connect to a server as a TOR.
- B . The network between TORs and core switches must be an ECMP-enabled Layer 3 network.
- C . The network between TORs and core switches must be a Layer 2 network that runs MSTP to prevent loops.
- D . The network between TORs and core switches can be either a Layer 2 or a Layer 3 network.
Regarding the VS technology of CE series switches on an SDN network, which of the following statements are true? (Choose all that apply.)
- A . All ports on a forwarding chip of the LPU must be allocated to the VS in Group mode at the same time.
- B . All ports on a forwarding chip of the LPU must be allocated to the VS in Port mode at the same time.
- C . Any LPU ports can be freely assigned at any VS in Group mode.
- D . Any LPU ports can be freely assigned at any VS in Port mode.
AD
Explanation:
Reference: https://forum.huawei.com/enterprise/en/cloudengine-series-switches-faqs-4-3-vs/ thread/420793-861
In the SDN RR+ solution, the AC can provide which of the following functions? (Choose all that apply.)
- A . Calculates optimal paths globally based on multiple constraints.
- B . Pre-defines BGP routing policies.
- C . Generates BGP routes/policies and applies them to devices.
- D . Manages topology and BGP relationships
Which of the following statements is true about proxy ARP?
- A . Proxy ARP allows a gateway directly connected to the host to use its own MAC address to reply to ARP requests in place of the destination host.
- B . Proxy ARP allows a gateway directly connected to the host to help the destination host to transmit ARP packets across VLANs.
- C . Proxy ARP is used for communication within a VLAN.
- D . Proxy ARP means to buy the permission to use ARP packets from a proxy.
A
Explanation:
Reference: https://support.huawei.com/enterprise/en/doc/EDOC1000166635/620f63f3/proxy-arp
When a host shifts from one network to another, which of the following statements is true?
- A . You must change its IP address and MAC address.
- B . You must change its IP address, but not its MAC address.
- C . You must change its MAC address, but not its IP address.
- D . The MAC address and IP address do not need to be changed.
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 resources.
A trunk port on a switch allows packets from VLANs 3, 4, and 5 to pass, but only packets from VLANs 3 and 4 have tags.
Which of the following may be the reason why packets from VLAN 5 do not have tags?
- A . The port PVID is 5.
- B . The port PVID is 3 and 4.
- C . During trunk port configuration, the port trunk permit vlan 3 4 command is configured.
- D . GVRP is enabled on this port.
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 factors does not affect the performance of the SDN network?
- A . Network congestion
- B . Routing loop
- C . Access control list
- D . Non-optimal route
From the perspective of the entire Internet, which of the following methods can be used to effectively reduce the size of the routing tables on an SDN network?
- A . Increase the frequency of updating dynamic routes
- B . Divide VLANs
- C . Summarize routes
During SDN network fault locating, which of the following commands can be used to collect basic runtime information for datacom devices?
- A . display version
- B . display diagnostic-information
- C . display log
- D . display current-configuration
B
Explanation:
Reference: https://support.huawei.com/enterprise/en/doc/EDOC1000060368/1f5e57ad/display-commands
Which of the following statements is true about the IS-IS backbone area?
- A . A router belongs to all areas.
- B . All routers belong to the same area.
- C . This area comprises a series of continuous L2 routers and L1-L2 routers.
- D . This area is central area connected to other areas.
C
Explanation:
Reference: https://www.sciencedirect.com/topics/computer-science/internal-router