In Ethernet, ARP packets are divided into ARP Request and ARP Response. In the initial stage of communication, how is ARP Request transmitted in the network?
- A . Unicast
- B . Broadcast
- C . Multicast
- D . Multicast
The 48-bit value of the MAC address of the computer network card is uniformly assigned by the IETF to each manufacturer, and is unique in the world.
- A . TRUE
- B . FALSE
For multiple static routes reaching the same destination, you can configure different priorities for them, so as to more flexibly apply route management policies to achieve route backup. This static routing scheme is called ？
- A . Floating Static Routes
- B . Static routes are permanently published
- C . Static Route Load Balancing
- D . Default static route
Which of the following statements about the configuration of static routes is correct ？
- A . The next hop is required
- B . The mask parameter is required
- C . The mask parameter is optional
- D . Priority is required
The DBA can complete the dynamic allocation of upstream bandwidth in microsecond or millisecond time intervals.
- A . TRUE
- B . FALSE
In order to improve the bandwidth utilization rate, the upstream direction of the GPON system allows multiple ONU to send data at one time.
- A . TRUE
- B . FALSE
Which message does GPON transmit by establishing a dedicated ATM PVC or GEM Port between OLT and ONT? Used to provide standard discovery ONU capabilities, and to manage and control them.
- A . PLOAM
- B . MPCP
- C . DBAs
- D . OMCI
The xPON system adopts WDM technology to realize single-fiber bidirectional transmission.
- A . TRUE
- B . FALSE
In the 10G GPON protocol stack, the smallest encapsulation unit is?
- A . XGEM
- B . GEM
- C . TCONT
- D . GTC
In the 10G GPON system, the XGEM frame is used to encapsulate data. How many bits of PORT ID are defined in the XGEM header?
- A . 16
- B . 14
- C . 12
- D . 18
The total downstream bandwidth of the 10G EPON PON port is the sum of the EPON downstream bandwidth and the 10G EPON downstream bandwidth.
- A . TRUE
- B . FALSE
Which of the following statements about DHCP is wrong?
- A . Multiple DHCP servers are not allowed in the network at the same time, because multiple servers will respond at the same time, and the client cannot choose an address
- B . The Discover message between the DHCP Relay and the DHCP server is a unicast message
- C . If the client gives up the current IP address, uses the DHCPRELEASE message to notify the server, and the server reclaims this address for the next use.
- D . The packet exchanges experienced by DHCP to obtain an address normally include Discover, offer, Request and ACK
A VLAN service template is a set of service-related parameters in VLAN attributes. After a VLAN is bound to a service template, the VLAN has the attributes defined in the template, which is an efficient way to configure VLAN.
- A . TRUE
- B . FALSE
In-band network management and out-band network management can use the same network segment.
- A . TRUE
- B . FALSE
Which of the following commands can be used to confirm the auto-discovered board?
- A . board prohibit
- B . board reset
- C . board confirm
- D . board add
If the ONT is added on the GPON port by confirmation, what functions need to be enabled on the OLT?
- A . GPON line encryption
- B . PON port FEC function
- C . ONT auto-discovery
- D . POE function
In the GPON network, the long-lasting ONT will cause which of the following results?
- A . All business is normal, no impact
- B . Other ONT under the same PON port are disconnected
- C . Other ONT under the entire OLT are disconnected
- D . All of the above are possible
If the GPON optical module type is Class C+, how much value of its receiving sensitivity?
- A . 7dBm
- B . 3dBm
- C . -32dBm
- D . -12dBm
What is the pigtail type of the PON optical port?
- A . FC
- B . SC
- C . SL
- D . LC
Access Controller access domain controller: Provides the automation capability of access equipment.
- A . TRUE
- B . FALSE
eSight supports the unified management of Huawei servers, storage, virtualization, switches, routers, VLANs, firewalls, PON, eLTE, unified communications, telepresence, video surveillance and other equipment, as well as application systems and equipment room facilities, and pre-integrated with HP, Management capabilities of third-party mainstream devices such as Cisco and H3C.
- A . TRUE
- B . FALSE
If the PON system is regarded as a black box, the external interfaces presented by the OLT and ONU are mainly Ethernet interfaces, and the GEM encapsulation and decapsulation take place inside the PON system.
- A . TRUE
- B . FALSE
Which bit in the Flags field of an IP packet indicates whether the packet can be fragmented?
- A . MF
- B . DF
- C . ToS
- D . Reserved bit 0
What protocol does the FTP protocol run on?
- A . UDP
- B . TCP
c. IP - C . ARP
Which of the following statements is true?
- A . Compared with the shared hub, a port of the LAN switch can be said to be a separate collision domain.
- B . When the LAN Switch receives a packet containing an unrecognized MAC address, it directly sends the packet back from the port it received.
- C . The LAN Switch may not recognize the MAC address, but must recognize the IP address.
- D . The LAN Switch mainly searches for the corresponding IP address according to the MAC address of the data packet to realize the forwarding of the data packet.
When the Access port of the Ethernet switch receives a packet with a tag, which of the following processing behavior is correct?
- A . When the VLANID is the same as the default VLANID, the packet is received.
- B . Strip the frame’s PVID Tag first, and then receive it.
- C . When the VLANID is different from the default VLANID, the packet is received.
- D . Receive the message and tag it with the default VAN.
Which of the following options can effectively reduce the size of routing table entries?
- A . Deploy BFD to accelerate network monitoring
- B . Route Aggregation
- C . Divide VLAN
- D . Increase the update frequency of dynamic routing
Based on the principle of high board versatility, the MA5800 can use the service board of the MA5608T.
- A . TRUE
- B . FALSE
After the GEM Port bears the service, it must be mapped to the T-CONT unit for uplink service scheduling. Each ON supports multiple T-CONT, and can select different types of T-CONT according to different service types.
- A . TRUE
- B . FALSE
In the downstream direction of GPON, due to the broadcast mode, all ONU can receive the same data, and in the upstream direction, due to the same optical splitter, the data of one branch fiber can also be received by another branch fiber.
- A . TRUE
- B . FALSE