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WorksheetsH12-811 HCIA-Datacom part 5
Total questions: 100
Worksheet time: 51mins
The DHCPv6 server supports the provision of other configuration information such as DNS server addresses for the host.
True
False
Which of the following statements about Python is incorrect?
Python has a wealth of third-party libraries.
Python is a fully open source high-level programming language.
Python can be used for automated operation and maintenance scripts, artificial intelligence data science and many other fields.
Python has a clear grammatical structure, is simple and easy to learn, and runs efficiently.
For multiple paths to the same destination network, the router needs to select by comparing the magnitude of the Preference value. If the Preference is the same, the router selects according to the magnitude of the Cost value.
True
False
When adopting LACP mode for link aggregation, what is the default system interference level of Huawei switches?
36864
4096
24576
32768
The login timeout time in the VRP system can only be set under the vty interface.
True
False
What kind of network equipment can host A and host B use to achieve communication?
router
Hub
HUB
Layer 2 switch
Which of the following IPv4 addresses is a class A address?
192.168.1.1
100.1.1.1
127.0.0.1
172.16.1.1
The config mode is the default ACL matching order on Huawei devices.
True
False
NAPT allows multiple private IP addresses to be mapped to the same public IP address through different port numbers. The following description of the port number in NAPT is correct.
The correspondence between port numbers and private addresses must be manually configured
No need to do any configuration about port number
Only need to configure the range of port numbers
Need to use ACL to assign port numbers
Does the WEP security policy support the use of TKIP for data encryption?
True
False
When the FIT AP goes online, the software version will be downloaded from AC.
True
False
Which of the following interfaces are not open to Huawei controllers?
NETCONF
RESTful
AAA
OpenFlow
If the administrator wants to completely delete the old device configuration file, the following command is correct.
clear config.zip
delete /unreserved.config.zip
delete /force config.zip
reset config.zip
What is wrong about the following description of the router?
The router can be used as a gateway device
The router cannot isolate the broadcast domain
The router can realize IP packet forwarding
The router works at the network layer
By default, on the broadcast network OSPF, what is the transmission period of the protocol HELLO message?
10s
40s
30s
20s
By default, what is the Router Dead Interval of the OSPF protocol on the broadcast network?
20s
40s
10s
30s
When using the ping command on the VRP platform, if you need to specify an IP address as the source address of the echo request message, which of the following parameters should be used?
=-d
=-a
=-S
=-n
All interfaces of routers running OSPF protocol must belong to the same area.
True
False
What is the total length of port ID in Spanning Tree Protocol?
2
8
4
16
When a switch receives a unicast data frame with a VLAN tag, but finds that the destination MAC address of the data frame cannot be queried in its MAC address table, the switch's processing behavior for the data frame is.
The switch will broadcast this data frame to all ports (except the receiving port) in the VLAN where the data frame is located
The switch will broadcast the data frame to all ports
The switch will discard this data frame
The switch will broadcast this data frame to all Access ports
In the RSTP protocol, when the edge port receives the configuration BPDU message, it loses the edge port attribute.
True
False
STA. The only way to discover the wireless network is the Beacon frame sent by the AP.
True
False
Which of the following commands can be used to check the session status of the PPPoE client?
display current configuration
display pppoe-client session summary
display ip interface brief
display pppoe-client session packet
An ACL rule is as follows: Which of the following IP addresses can be matched by permit rules rule 5 permit ip source 10.0.2.0 0.0.254.255? (Multiple choice)
10.0.4.5
10.0.5.6
10.0.6.7
10.0.2.1
Which of the following parameters is used in LCP negotiation to detect link loops and other abnormal conditions?
MRU
CHAP
Magic word
PAP
What is the default step length of ACL on AR G3 series routers?
10
5
20
15
The following figure shows the routing table of a router. When the router receives a data packet with a destination IP address of 9.1.1.1, the router will forward it according to the route of 9.1.0.0/16 because the mask length of the route is longer.
True
False
Which of the following IPv6 addresses can be abbreviated as 2FFF DAC:ABEF:CDAA:732?
2FFF:0DAC:ABEF:0000:0000:0000:CDAA:0732
2FFF:0DAC:ABEF:0000:0000:CDAA:0732
2FFF:DACO:ABEF:0000000:0000:CDAA:0732
2FFF:0DAC:ABEF:0000:0000:0000:CDAA:7320
What kind of packets does the OSPF protocol use to request LSAs that are missing locally?
HELLO
LSACK
LSR
LSU
Only the WPA2-PSK security policy supports the use of TKIP for data encryption.
True
False
VLAN4095 cannot be created on Huawei switches, and VLAN1 cannot be deleted.
True
False
Users cannot configure VLAN ID to 0.
True
False
What kind of packets does the OSPF protocol use to describe its LSDB?
DD
HELLO
LSR
LSU
Which of the following information is not included in the MAC address table of the switch?
The port number
MAC Address
IP address
VLAN
When using the SNMPv1 protocol to manage network devices, which of the following commands is used by the network management system to complete the configuration of the network devices?
Get-Next Request
Response
Set Request
Get-Request
What is wrong about the ARP message?
ARP packets cannot be forwarded to other broadcast domains
ARP reply message is sent by unicast party
ARP request message is sent by broadcast
Any link layer protocol requires ARP protocol to assist in obtaining data link layer identification
FIT AP does not need AC. It can also work independently.
True
False
In order for the STA to obtain the SSID related information on the AP, which of the following messages is used by the AP to proactively declare the wireless network SSID information?
Join
Beacon
Probe
Discovery
As shown in the figure, two hosts realize communication between TAS through single-arm routing. When the G0/0.2 sub-interface of RTA. receives the data frame sent by host B to host A, RTA will execute which of the following Operation?
RTA. First delete VLAN tag 20, then add VLAN tag 10, and then send it out via G0/0.1 interface
RTA. Forward the data frame directly through the G0/0.1 sub-interface
RTA. The data frame will be discarded
RTA. After deleting VLAN tag 20, it will be sent out by G0/0.1 interface
The FIT AP can obtain the IP address of AC. through the DHCP Option to establish a CAPWAP tunnel. Which Option needs to be configured on the DHCP server for this?
Option 82
Option 10
Option 43
Option 55
When the device running STP receives the RSTP configuration BPDU, it will discard it.
True
False
The mask length is 12 bits can be expressed as?
255.240.0.0
255.248.0.0
255.255.0.0
255.255.255.0
UDP is oriented to connectionless and must rely on () to ensure the reliability of transmission.
Internet Protocol
Transmission Control Protocol
Application layer protocol
Network layer protocol
What is RouterDeadInterval of the OSPF protocol on the broadcast network by default?
40s
10s
20s
30s
By default, what is the period for sending OSPF HELLO packets on the broadcast network?
10s
20s
30s
40s
In the VRP system, what function does the Ctrl+Z combination key have? (Multiple choice)
Exit user view from any view
Exit interface view
Exit the current view
Exit the Console interface view
Return from system view to user view
As shown in the figure below, assuming that the MAC address table of SW A is as follows, now host A sends a data frame with a destination MAC address of MAC-B. Which of the following statements is correct?
Flood out this data frame
Forward this data according to the G0/0 port
SW A. Discard the data frame
Forward this data frame from port G0/0
A company applies for a Class C IP address segment, which needs to be evenly distributed to 8 subsidiaries. The largest subsidiary has 14 computers. Different subsidiaries must be in different network segments. What should be the subnet mask set to?
255.255.255.192
255.255.255.240
255.255.255.0
255.255.255.128
After the network administrator uses the Traceroute function on the router device, in the data packet sent by the router, the value of the Protocol field in the IPv4 header is?
17
2
1
6
Which of the following routing protocols has the highest priority?
RIP
Direct
Static
OSPF
Which of the following fields is not included in the HELLO packet of the OSPF protocol?
Network HAsk
Neighbor
sysname
HelloInterval
As shown in the broadcast network. OSPF runs on four routers in the same area. Same network segment. OSPF will automatically elect one DR and multiple BDRs to achieve a better backup effect.
True
False
The administrator plans to implement route backup by configuring static floating routes, the correct way to achieve this is.
The administrator needs to configure different protocol priority values for the main static route and the standby static route
The administrator only needs to configure two static routes
The administrator needs to configure different metric values for the main static route and the standby static route. The administrator only needs to configure two static routes
The administrator only needs to configure two static routes
The following protocols are China's link state routing protocol.
PTP
OSPF
Direct
Static
When two OSPF routers form a 2-way neighbor relationship, the LSDB has been synchronized.
True
False
The change of the Router ID of the OSPF process takes effect immediately.
True
False
Which of the following protocols is OSPF based on?
UDP
HTTP
TCP
IP
The Router ID of OSPF must be the same as the IP address of a certain interface of the router.
True
False
The following two configuration commands can realize the router RIA to the same destination 10.1.1.0 routing master and backup backup.
[RTA] ip route-static 10.1.1 0 24 12.1.1.1 permanent
[RTA] ip route-static 10.1.1.0 24 13.1.1.1
True
False
The administrator wants to configure the IP address on the G0/0/0 interface of the router. Which of the following addresses is correct?
237.6.1.2/24
145.4.2.55/26
127.3.1.4/28
192. 168.10.112/30
To ensure that the same data stream is forwarded on the same physical link, which load sharing method does Eth Trunk use?
Load sharing based on data packet inbound interface
Packet-based load sharing
Load sharing based on application layer information
Flow-based load sharing
In the configuration BPDU sent by the switch, which bridge ID is unlikely to appear?
8192 00-01-02-03-04-CC
2048 00-01-02-03-04-CC
4096 00-01-02-03-04-CC
0 00-01-02-03-04-CC
By default, the bridge priority of Huawei switches is 32768.
True
False
The Trunk port can send both tagged data frames and untagged data frames.
True
False
The RSTP protocol uses the P/A mechanism to speed up the speed at which the upstream port turns to the Forwarding state, but there is no temporary loop appeared, what is the reason?
Shorten the time of Forward Delay
Edge port
Speed up port role election
Ensure that there will be no temporary loops through the synchronization mechanism
What is the length of the Ethernet II frame containing the Ethernet header?
64-1518B
60-1560B
46-1500B
64-1500B
In a Layer 2 network with redundant links, which of the following protocols can be used to avoid loops?
STP
UDP
ARP
VRRP
If the Length/Type of an Ethernet data frame is 0x8100. Which of the following statements is correct?
There is always a UDP header in the upper layer of each data frame
The upper layer of a data frame must exist IP header
There is always a TCP header in the upper layer of each data frame
Each data frame must carry VLAN TAG
RADIUS is a common protocol to implement AAA.
True
False
After the administrator successfully logs in to the router through Telnet, it is found that the interface IP address of the router cannot be configured. So, what are the possible reasons?
The authentication mode of the Telnet user is incorrectly configured
The Telnet terminal software used by the administrator prohibits the corresponding operation
The Telnet user level is incorrectly configured
SNMMP parameter configuration error
When AP and MC are in different Layer 3 networks, what method is recommended for AP to discover AC?
DHCP
DNS
Broadcasting method
Manually specified on AP
The AP can independently complete wireless user access, wireless user authentication, and service data forwarding without an AC.
True
False
In order for the STA to obtain the SSID related information on the AP, which of the following messages is used by the AP to proactively declare the wireless network SSID information?
Join
Beacon
Probe
Discovery
To provide different network services for different users on the AP, which of the following can be configured?
TAP
VAP
VAC
VT
AC uses CAPTAP control tunnel transmission to FIT AP management packet
True
False
The following statement about static routing in Huawei equipment is wrong ().
The cost value (Cost) of a static route cannot be modified.
The default value of the static route priority is 60
The range of static route priority value is 1-255
When the priority of a static route is 0, the route will definitely be preferred.
Which of the following statements is correct? ()
The router works at the physical layer
The switch works at the physical layer
The switch works at the network layer
The router works at the network layer
On an interface that uses PPP as the data link layer protocol, you can configure a static route by specifying the next hop address or outgoing interface. ()
True
False
The following description of the Layer 2 Ethernet switch is incorrect.
Need to make certain modifications to the layer 3 header of the forwarded message and then forward it
Able to learn MAC. Address
Forward according to the Layer 2 header information of the Ethernet frame
Layer 2 Ethernet switch works at the data link layer
As shown in the figure, when the switch needs to forward the frame with the destination mac address of 5489-98ec-f011, which of the following descriptions is correct?
The switch will flood the frame on all ports except the port that received the frame
The switch will send a message that the destination is unreachable to the source device
The switch does not find a matching entry in the MAC. address table, so the frame will be discarded
The switch needs to discover the MAC by sending a request..Device with address 548998ec-f011
What is the range of VLAN ID that users can use? ()
1-4096
1-4094
0-4096
0-4095
By default, in the SNMP protocol, which port number does the agent process use to send alarm messages to N? ()
164
163
162
161
AAA, Which of the following is not included?
Audit
Accounting
Authentication
Authorization
What is the port number used by the FTP protocol control plane? ()
23
24
21
22
There is no channel overlap in the 14 available frequency bands in the 2.4GHz frequency band. ()
True
False
After link authentication is completed, STA will continue to initiate link service negotiation. Which of the following messages will be used to achieve the specific negotiation?
Join
Handshake
Association
Negotiate
The Layer 2 networking of WLAN refers to STA. It uses AC as its own gateway.
True
False
What is the IEEE802.11 standard corresponding to Wi-Fi6?
802.11au
802.11ax
802.11at
802.11ac
Which of the following statements about Adjacency Segment is wrong? ()
Adjacency Segment is identified by Adjacency Segment ID. (SID)
Adjacency Segment spreads to other network elements through the IGP protocol, which is visible globally and valid locally
Adjacency Segment must be configured manually
Adjacency Segment is used to identify an adjacency of a node in the network
If during the PPP authentication process, the authenticatee sends the wrong user name and password to the authenticator, what type of message will the authenticator send to the authenticatee? ()
Authenticate-Reject
Authenticate-Ack
Authenticate-Nak
Authenticate-Reply
Which version of the SNMP protocol below supports encryption features? ()
SNMPv3
SNMPv2c
SNMPv1
SNMPv2
SNMPv1 defines five protocol operations. ()
True
False
The IPv6 address 2001: ABEF:224E:FFE2:BCC0:CD00:DDBE:8D58 cannot be abbreviated. ()
True
False
The DHCPv6 server supports the provision of other configuration information such as DNS server addresses for the host. ()
True
False
Which of the following statements about direct routing is correct? ()
Direct routing requires the administrator to manually configure the destination network and next hop address
Direct routes have lower priority than static routes
Direct routing has lower priority than dynamic routing
Direct routing has the highest priority
When two OSPF routers form a 2-WAY neighbor relationship, LSDB. has been synchronized. ()
True
False
If the Proto of a certain route information in the routing table is OSPF, the priority of this route must be 10.
True
False
The election of the root switch in STP only compares the priority of the switch, while in RSTP, the priority of the switch is compared with the MAC address at the same time. ()
True
False
The IP addresses of the VLANIF interfaces of the same switch cannot be the same
True
False
Access type ports will () when sending messages.
Send tagged messages
Strip the VLAN information of the message, and then send it out
Type the PVID. information of this port and then send it out
Add the ZLAN message of the message and then send it out
