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WorksheetsH12-811 HCIA-Datacom Part 7
Total questions: 100
Worksheet time: 50mins
The controller is the core component of SDN. The controller is connected to the device through the southbound interface. The following is missing from the controller southbound agreement?
SNMP
PCEP
OpenFlow
NETCONF
After the two routers are configured with OSPF, the administrator configures the command on RTA. The following description is correct?
The neighbor relationship between the two routers will be down
The neighbor relationship between the two routers will not be affected
RTA will no longer send OSPF packets
RTA will continue to receive and analyze and process OSPF packets sent by RTB.
Which of the following statements about the default route are correct?
If the destination address of the message cannot match any other routing entries in the routing table, the router will forward the message according to the default route
There must be a default route in the routing table of any router
The default route can only be manually configured by the administrator
In the routing table, the default route appears in the form of a route to the network 0.0.0.0 (the mask is also 0.0.0.0)
The function of the OSPF hello message is?
Neighbor discovery
Maintain neighbor relations
Update LSA Information
Synchronize the LSDB of the router
The output information of the sub-interface of a router aggregate port 1 is shown in the figure.
According to this information, which of the following statements are correct? (Multiple choice)
The sub-interface number of the aggregate port is 100.
The sub-interface of the aggregated port carries the VLAN when forwarding data frames
There are two links on the aggregation port
The IP address of the sub-interface of the aggregate port is 10.0.12.2/24
On Huawei AR G3 series routers, what authentication modes does AAA support?
802.1x
Local
None
HWTACACS
The output information of a certain device is shown in the figure. Which of the following statements is correct?
The IP address of the interface is 10.0.12.2
The MAC address of the interface is 00e0-fc22-4fff
The working rate of this interface is 1Gbps
The MTU value of this interface is 1000
To query the configuration information of the device ospf protocol, which of the following commands can be used?
Enter the command "display this" in the ospf protocol view
Display current-configuration
Display ospf peer
Dis ip routing-table
The transmission rate of the Eth-Trunk port in manual link aggregation mode is related to?
Number of member ports
Bandwidth of member port
Whether an IP address is configured on the member port
Is the member port on the public or private network
In order to realize the network layer function on the VLANIF interface, do you need to configure it on the VLANIF interface?
MAC Address
Subnet mask
IP prefix
IP address
In the CAPWAP tunnel establishment phase, after AC receives the Join Request message sent by the AP, AC will check the validity of the AP. Which of the following is the authentication method supported by AC?
SN certification
Password certification
MAC Authentication
Not certified
Which of the following statements about the S field in the MPLS packet header are correct?
The s bit has only 1 bit in frame mode, and 2 bits in cell mode
The s bit exists in every MPLS packet header
Used to mark whether there are other labels behind this label, 1 means yes, 0 means no
Used to mark whether there are other labels behind this label, 0 means yes, 1 means no
Through SR (Segment Routing), an explicit path can be easily defined. The nodes in the network only need to maintain the Segment Routing information to cope with the real-time and rapid development of the business. What are the following characteristics of Segment Routing?
Extending the existing protocol (eg IGP) can make the existing network better and smoothly evolve
SR (Segment Routing) adopts IP forwarding, no extra dimensioning is required-a label forwarding table
Source routing technology is used to provide the ability to quickly exchange text between the network and upper-layer applications
At the same time, it supports the centralized control mode of the controller and the distributed control mode of the transponder, providing a balance between centralized control and distributed control
Which of the following statements about IPv6 address configuration are correct?
IPv6 supports DHCPv6 for address configuration
IPv6 address supports automatic configuration in multiple ways
IPv6 addresses can only be configured manually
IPv6 supports stateless automatic configuration
Which of the following descriptions about the OSPF area is correct?
All networks should be declared in zone 0
The number of the backbone area cannot be 2
Before configuring the OSPF area, you must configure an IP address for the loopback interface of the router
The number range of the area is from 0.0.0.0 to 255.255.255.255
The route entry 10.0.0.24 may be aggregated from which of the following subnet routes?
10.0.0.23
10.0.0.28
10.0.0.26
10.0.0.24
Which of the following statements about single-arm routing are correct?
One physical connection per VLAN
Only one physical link is used between the switch and the router to connect
On the switch, configure the port connected to the router as a Trunk port and allow the relevant VLAN frames to pass
Need to create a subinterface on the router
Which of the following statements about IPv6 anycast addresses are correct?
Anycast address and unicast address use the same address space
Provide additional functions for the service
The packet whose destination address is the anycast address will be sent to the nearest network interface in the sense of routing
Realize service load sharing
Which of the following options describes the concept of the IEV architecture correct?
MANO is composed of NFVO, VNFN and VIM
VFM, Virtual network function management, responsible for the life cycle management of VNF
VIM (Virtualized Infrastructure Manager) virtual resource management, responsible for the virtualization of infrastructure
NFVO (Network Orchestrator), Responsible for business orchestration
Regarding the control plane of the device, which of the following statements is correct?
The control plane is responsible for the interaction of routing protocols between devices
The control plane provides device monitoring capabilities
The control plane is responsible for directing data forwarding
The control plane is responsible for generating IP routing table
Which of the following networks belong to a local area network?
A home network
A company office network
Internet
Broadband Metropolitan Area Network
Which of the following features does the OSPF protocol have?
Support area division
Prone to routing loops
Calculate the shortest path based on the number of hops
Trigger update
Which of the following elements are included in the routing table?
Interface
Destination/mask
Nexthop
Protocol
Cost
Which of the following fields are present in both IPv6 and IPv4 packet headers?
Next Header
Destination Address
Version
Source Address
What are the three sources for routers to obtain routing entries?
Aggregate routing
Static routing
Dynamic routing
Direct route
Is there any correct statement about the TTL field in the IPv4 header?
The range of TTL value is 0-255
Each time a message passes through a three-layer device, TTL value minus 1
TTL value length is 8bit
When routing loops occur, the TTL value can be used to prevent data packets from being forwarded indefinitely
Which of the following MAC addresses cannot be used as the MAC address of the host network card?
03-04-05-06-07-08
00-02-03-04-05-06
02-03-04-05-06-d7
01-02-03-04-05-06
An ACL rule is as follows: Which of the following IP addresses can be matched by permit rules?
rule5per mit ip source10.0.1.00.0.254.255*
10.0.3.4
10.0.1.2
10.0.4.5
10.0.2.3
In the network shown in the figure below, there are the following configurations in Router A. Which of the following statements is correct?
ip route-static 10.0.2.2 255.255.255.255 10.0.12.2
Route-static 10.0.2.2 255.255.255.255 10.0.21.2 preference 40
The Next Hop in the routing table of Router A reaches 10.0.2.2. Hop is 10.0.21.2
The Next Hop in the routing table of Router A reaches 10.0.2.2. Hop is 10.0.12.2
If the G0/0 port is Down, then Router A reaches 10.0.2.2. The route NextHop is changed to 10.0.12.2
If the G0/0 port is Down, the route NextHop from Router A to 10.0.2.2 is changed to 10.0.21.2
Which of the following statements about RA and RS messages in IPv6 are correct?
RA is used to request address prefix information
RS is used to request address prefix information
RA is used to reply address prefix information
RS is used to reply address prefix information
In what ways does VRP support router configuration?
Configure the router via FTP
Configure the router through the mini USB port
Configure the router through the Console port
Configure the router via Telnet
If the IP address of a host in the LAN is 192.168.1.1/30, which of the following IP addresses will be processed by the host as the destination address of the IP packet?
192.168.1.3
192.168.1.1
192.168.1.2
255.255.255.255
After a fault occurs in the network, the administrator finds that the configuration of a certain router has been modified through troubleshooting. What measures should the administrator take to avoid this situation from happening again?
The administrator should configure ACL to control that only the administrator can log in to the device
The administrator should enable port-security on the routed management port
The administrator should configure AAA to authenticate and authorize users who log in to the device
The administrator should configure the permission level of all accounts except the administrator to log in to the device
When the LCP phase of PPP is negotiated, the content of the negotiation includes?
MRU
Authentication protocol
Magic word
IP address
Which NAT can convert multiple private network addresses into one public network address to access the public network at the same time?
Static NAT
Dynamic NAT
NAPT
Easy IP
NAT configuration is as follows, which IP can be converted when accessing the public network?
(RTA) acl2000 (RTA-acl-basic-2000) rule5 permit source 192.168.1.00.0.0.255 RTA-acl-basic-2000) rule 10 permit source 192.168. 2.0 0.0.0.255 RTA-acl-basic-2000)quit RTA)interface serial1/0/0 (RTA-Serial1/0/0 )nat outbound 2000 address-group1 no-pat *
192.168.1.254
192.168.2.222
198.162.1.222
100.1.1.3
What are the ACL classifications?
Basic ACL
Advanced ACL
Layer 2 ACL
User-defined ACL
The NAT configuration is as follows, which IP can be converted when accessing the public network?
(RTA) acl2000 (RTA-acl-basic-2000) rule5 permit source 192.168.1.00.0.0.255 RTA-acl-basic-2000) rule
10 deny source 192.168. 1.30 (RTA-acl-basic-2000) quit RTA) interface serial1/0/0 (RTA-Serial1/0/0) nat outbound 2000*
192.168.1.1
192.168.2.1
192.168.1.2
192.168.1.3
DHCP is called Dynamic Host Configuration Protocol. It mainly assigns IP addresses and DNS information to hosts automatically. The messages used are?
discover
Offer(Provided)
request
ACK (acknowledgement)
The processing behavior of the data frame received by the switch is?
Forward
Flooding
Throw away
Forward from the receiving port
The routing table is generated by?
Direct connection
Static
OSPF
ISIS
The routing table is generated by?
Direct connection
Static
Dynamic routing protocol
ISIS
OSPF protocol needs to elect DR and BDR in which of the following network types?
Point-to-multipoint
NBMA
Point-to-point type
Broadcast type
The administrator cannot log in to the Huawei router through Telnet, but other administrators can log in normally, so which of the following are the possible reasons?
The authority level of the administrator user account has been modified to 0
The administrator user account has been disabled
The Telnet service of the AR2200 router has been disabled
The administrator user account has been deleted
Which of the following features does the OSPF protocol have?
Easy to produce routing loops
Calculate the shortest path by number
Support area division
Trigger update
Which of the following fields does the MPLS header include?
EXP
TTL
Label
Tos
What are the user authentication methods that can be deployed in WLAN?
Portal authentication
MAC Authentication
Radius certification
802.1X authentication
Which of the following IEEE802.11 standards support operation in the 5GHz frequency band?
802.11ac
802.11n
802.11g
802.11a
Which of the following statements about IPv6 address configuration is correct?
IPv6 supports stateless automatic configuration
IPv6 addresses can only be configured manually
IPv6 address supports automatic configuration of multiple clocks
IPv6 supports DHCPv6 for address configuration
How to add AP on AC?
Import AP offline
Automatically discover AP
Add online
Manually confirm APs in the non-certified list
Which of the following refers to network communication?
Use instant messaging software (such as: QQ, WeChat) to chat with friends
Use a computer to access the company's official website
Use computer to watch videos online
Download emails from the company mailbox to your computer
Which of the following fields does the ARP packet format contain?
Hardware Type
Protocol Address of sender
Operation Code
Protocol Type
Which of the following attributes cannot be used as a measure of the parameter of cost?
bandwidth
Sysname
Time delay
Hop count
If the Ethernet data frame Length/Type=0X0806, which statement is correct?
The source MAC of the secondary data frame. The address must not be FFFF-FFFF-FFFF
This data frame is an IEEE802.3 frame
The secondary data frame is Ethernet frame
The destination MAC of this data frame. The address may be FFFF-FFFF-FFFF
What are the advantages of using dynamic host configuration protocol DHCP to assign IP addresses?
Heavy workload and difficult to manage
can be realized IP address reuse
avoid IP address conflict
When the configuration information changes (such as DNS), only the administrator needs to modify it on the DHCP server, which is convenient for unified management
Network administrators use Ping to test the connectivity of the network. Which of the following protocols may be used in this process?
ICMP
UDP
TCP
ARP
Which of the following descriptions about OSPF's DD packets and LSA is correct?
The header of an LSA can uniquely identify an LSA
The LSA header is only a small part of the LSA
The DD packet contains the detailed information of the LSA
DD packets only contain the header information of LSA
The following statement about the main functions of the router is wrong?
Realize the mutual communication between the same network disconnection equipment
According to the source of the received packet IP address for forwarding
Establish routing table through multiple protocols
Guide data forwarding according to the routing table
Which of the following port states does the RSTP protocol include?
Learning
Discarding
Listening
Forwarding
Which of the following types does IPv6 address include?
Unicast address
Broadcast address
Multicast address
Anycast address
Which of the following are related to the purpose of encapsulation and decapsulation?
Encapsulation and decapsulation are important steps to realize the functions of different protocols
Interworking between different networks
Shorten the length of the message
Encapsulation and decapsulation can complete network fault location
The network administrator hopes that the data packets sent from host A to host B pass through the G0/0 interface between routers, and the data packets sent from host B to host A pass through G0/0 interface. Which of the following commands can achieve this requirement?
RTA: ip route-static 10.0.12.5 255.255.255.252 11.0.12.2
RTB: ip route-static 10.0.12.1 255.255.255.252 11.0.12.5
RTA: ip route-static 10.0.12.5 255.255.255.252 11.0.12.6
RTB: ip route-static 10.0.12.1 255.255.255.252 11.0.12.1
RTA: ip route-static 0.0.0.0 0.0.0.0 11.0.12.2
RTB: ip route-static 0.0.0.0 0.0.0.0 11.0.12.5
RTA: ip route-static 0.0.0.0 0.0.0.0 11.0.12.6
RTB: ip route-static 0.0.0.0 0.0.0.0 11.0.12.1
Compared with STP, which of the following port roles are newly defined in RSTP?
Designated port
Root port
Alternate port
Backup port
Which of the configurations in the following options belong to a Layer 2 ACL?
rule 10 permit 12-protocol arp
rule 25 permit source 192.168.1.1 0.0.0.0
rule 20 permit source-mac 0203-0405-0607
rule 15 permit vlan-id 100
Which of the following functions does the LCP protocol in the PPP protocol support?
Negotiate network layer address
Negotiate authentication agreement
Detect link loop
Negotiated maximum receiving unit MRU
Which extension headers are supported by IPv6 packets?
Destination option extension header
Fragment extension header
Hop-by-hop option extension header
VLAN extension header
Which of the following are not open interfaces for Huawei network equipment?
NETCONF
RESTCONF
JSON
XML
Is there any correct statement about the shortcut keys of the VRP operating platform?
TAB. Prompt for the most recently entered command
CTRL+C. Stop the current command
The left cursor key (<) moves the cursor one place to the left.
CTRL+Z back to user view
On the switch, which VLANs can be deleted by using the undo command?
vlan 4094
vlan 2
vlan 1
vlan 1024
The following description of the Forwarding status in the spanning tree protocol is wrong?
Ports in the Forwarding state can forward data packets
The port in the Forwarding state does not learn the source MAC address of the packet.
Ports in the Forwarding state can receive BPDU packets
Ports in the Forwarding state must send BPDU message
Which devices are generally involved in WLAN deployment schemes in enterprise scenarios?
AC (Access Controller)
Poe switch
CPE
AP
Which of the following statements about IPv6 RA and RS messages are correct?
RS is used to reply address prefix information
RS is used to request address prefix information
RA is used to request address prefix information
RA is used to reply address prefix information
Link aggregation is a common technology in enterprise networks. Which of the following descriptions are the advantages of link aggregation technology?
Improve safety
Improve reliability
Achieve load sharing
Increase bandwidth
In the STP protocol, which of the following factors will affect the election of the root switch?
IP address of the switch
Switch interface ID
Switch interface bandwidth port
Switch priority
MAC address of the switch
In order to realize the network layer function on the VLANIF interface, need to be configured on the VLANIF interface?
Subnet mask
MAC Address
IP prefix
IP address
In the STP protocol, which of the following factors will affect the election of the root switch?
MAC address of the switch
IP address of the switch
Switch priority
Switch interface bandwidth
Switch interface ID
The router uses the sub-interface as the gateway of the host, and the P address of the gateway is 10.0.12.2. Which of the following commands can achieve this requirement?
Interface GigabitEthernet0/0/0.20 Dot1q termination vid 10 ip address 10.0.12.2 255.255.255.0 Arp broadcast enable
Interface GigabitEthernet0/0/0.10 Dot1q termination vid 10 ip address 10.0.12.2 255.255.255.0 Arp broadcast enable
Interface GigabitEthernet0/0/0.10 Dot1q termination vid 20 ip address 10.0.12.2 255.255.255.0 Arp broadcast enable
Interface GigabitEthernet0/0/0.20 Dot1q termination vid 20 ip address 10.0.12.2 255.255.255.0 Arp broadcast enable
Router A and Router B are established OSPF neighbor relationship, the OSPF process number of router A is 1, and the area number is 0. Which of the following configurations on router A can enable router B to obtain the route of the network segment where host A is located?
ospf 1 area 0.0.0.0 network 192.168.1.2 0.0.0.0
ospf 1 import-route direct
ospf 1 area 0.0.0.0 network 192.168.0.0 0.0.255.255
ospf 1 area 0.0.0.0 network 192.168.1.0 0.0.0.255
How to enter in the VRP operating system view of SPF area 0?
(Huawei-ospf-1) area 0 enable
(Huawei-ospf-1) area 0
(Huawei) ospf area 0
(Huawei-ospf-1) area 0.0.0.0
After OSPF is configured on the two routers, the administrator configures commands on RTA. Which of the following descriptions is correct?
The neighbor relationship between the two routers will be down
RTA will no longer send OSPF packets
The neighbor relationship between the two routers will not be affected
RTA will continue to receive and analyze and process OSPF packets sent by RIB.
What command line views exist on the VRP operating platform?
User view
Interface view
Agreement view
System view
What are the functions of OSPF protocol DR and BDR?
Reduce the number of adjacencies
Reduce the types of OSPF protocol packets
Reduce the time to establish adjacency
Reduce the number of exchanges of link state information
Which of the following statements about the various versions of the SNMP protocol are correct?
The SNMPv2C message has the functions of identity verification and encryption processing.
SNMPv3 messages have the functions of identity verification and encryption processing.
SNMPv1 uses UDP as the transport layer protocol, while SNMPv2C and SNMPv3 use TCP as the transport layer protocol, so the reliability is higher.
SNMPv2C follows the 5 protocol operations defined in the v1 version and adds two additional operations.
Which of the following statements about IPv6 anycast addresses are correct?
The group anycast address and the single address address use the same address space
Back to provide services with more than functions
The packet whose destination address is the anycast address will be sent to the nearest network interface in the sense of routing
Back to achieve service load sharing
Which of the following options describes the concept of NFV architecture correct?
MANO is composed of NFVO, VNFM and VIM
NFVO (NFV Orchestrator). Responsible for business orchestration.
VIM (Virtualised Infrastructure Manager) virtual resource management is responsible for the virtualization of infrastructure.
VNFM. Virtual network function management, responsible for the life cycle management of VNF.
What is the role of link aggregation?
Improve network reliability
Increase bandwidth
Facilitate analysis of data
Achieve load sharing
The router enables the FTP service, the user name and password are both huawei and the root directory of FTP is set to flash:/dhcp/. Which of the following commands must be configured?
ftp server enable
local-user huawei ftp-directory flash:/dhcp/
local-user huawei password
local-user huawei service-type ftp
Which of the following applications is based on the TCP protocol?
Ping
TFTP
FTP
HTTP
Which of the following statements about the election of DR and BDR are correct?
BDR must exist in broadcast networks
If the priority is the same, compare the Router ID, the larger the value, the more preferred to be elected as the DR
DR must exist in broadcast networks
If the priority of an interface is low, the interface will not participate in the election of DR or BDR
What are the stable states of OSPF neighbor relationship?
2-way
Down
Attempt
Full
When OSPF protocol establishes adjacency, which of the following parameters must be consistent?
Router ID
Area ID
Router Priority
Router Dead Interval
Which of the following parameters need to be considered when electing a root port in STP?
Port priority
Port slot number, such as G0/0
Duplex mode of the port
The cost of the port reaching the root switch
MAC address of the port
The LACP mode of link aggregation uses LACPDU to elect the active end. What information in LACPDU is the basis for electing the active end of LACP?
Interface priority
Device priority
MAC address
Interface number
Which of the following elements are included in the routing table?
Interface
Destination/Mask
Protocol
Next Hop
The output information of a router is shown in the figure. Which of the following statements are correct?
VRP used version document and the VRP file used for the next startup are different
The configuration file currently used is different from the configuration file used for the next startup
The current VRP version file is the same as the VRP file used for the next startup
The current configuration file used is the same as the configuration file used for the next startup
Which authorization modes are supported by AAA on Huawei ARG3 series routers?
Not authorized
HWTACACS authorization
Local authorization
Authorization after successful RADIUS authentication
An AR2200 router needs to restore the initial configuration, which of the following operations are necessary?
Clear current configuration
Re-specify the configuration file to be loaded at the next startup
Reset saved configuration
Restart the AR2200 router
In order to detect the connectivity status of the CAPWAP tunnel, after the CAPWAP tunnel is established, which of the following CAPWAP messages is used by the AC for detection?
Hello
DPD
Keepalive
Echo
When configuring the PPP authentication mode as PAP, which of the following operations are necessary?
Configure the data link layer encapsulation type of the interface connected to the peer device to PPP
Add the user name and password of the authenticated party to the authenticating party's local user list
Set the authentication mode of PPP to CHAP
Configure the user name and password sent to the authenticating party on the authenticated party
Which of the following statements about the default route are correct?
If the destination address of the message cannot match any other routing entries in the routing table, the router will forward the message according to the default route
The default route can only be manually configured by the administrator
There must be a default route in the routing table of any router
In the routing table, the default route appears in the form of a route to the network 0.0.0.0 (the mask is also 0.0.0.0)
