WorksheetsH12-811 HCIA-Datacom bagian pdf 3
Total questions: 76
Worksheet time: 38mins
Which of the following IEEE802.11 standards only supports the 2.4GHz frequency band for communication?
802.11a
802.11g
802.11ax
802.11n
The MPLS label header is encapsulated between the data link layer header and the network layer header of the message.
True
False
The network management system can only view the operating status of the device through the SNMP protocol, but cannot issue the configuration.
True
False
Management Information Base (MIB) Information Base) is a virtual database, this database only exists on NMS.
True
False
If the MAC address of an interface is 0OEO-FCEF-OFEC, what is its corresponding EUI-64 address?
00EO-FCEF-FFFE-OFEC
02EO-FCFF-FEEF-OFEC
00EO-FCFF-FEEF-OFEC
02EO-FCEF-FFFE-OFEC
The following description of static and dynamic routing is wrong.
Dynamic routing protocols take up more system resources than static routing protocols.
After the link fails, the static route can automatically complete the network convergence.
After the administrator deploys the dynamic routing protocol in the corporate network, later maintenance and expansion can be more convenient
Static routing is easy to configure and easy to manage when applied in the enterprise
The Layer 2 Ethernet switch generates entries in the MAC address table according to the () of the Ethernet frame received by the port.
Source IP address
Source MAC. Address
Destination MAC. Address
Destination IP address
Which of the following statements are correct for the MAC address of the existing switch?
MAC. The address 5489-9885-18a8 is manually configured by the administrator
MAC. The address 5489-9811-0b49 is manually configured by the administrator
MAC. Address 5489-989d-1d30 is manually configured by the administrator
After the switch restarts, all MAC addresses need to be re-learned
When the switch port sends a data frame that carries the same VLAN TAG and PVID., it must be stripped of VLAN TAG and forwarded.
True
False
When the Access type port sends a message, it will.
Add the VLAN information of the message, and then send it out
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
In the MAC address table of the switch, which of the following entries will not age?
Static MAC address table entry
Port MAC address table entry
Dynamic MAC address table entry
Device MAC address table entry
By default, it takes at least 30s for the port status in the STP protocol to change from Disable D. to Forwarding status.
True
False
Which of the following descriptions about the switch is wrong?
The switch is generally used as the export equipment of the network
Switches generally work at the data link layer
The switch can complete the exchange of data frames
The switch can provide network access services for terminal devices (PC/server)
Which of the following levels is not a common network level in mid-sized campus network architecture?
Access layer
Core layer
Convergence layer
Network layer
UDP cannot guarantee the reliability of data transmission, and does not provide the functions of message sequencing and flow control. It is suitable for flows with low transmission reliability requirements but high transmission speed and delay requirements.
True
False
Which stage in the life cycle of campus network construction is the beginning of a project?
Network Optimization
Network implementation
Planning and design
Network operation and maintenance
When the router is powered on, it will read the configuration file from the default storage path to initialize the router. If there is no configuration file in the default storage path, what will the router use for initialization?
Initial configuration
Current configuration
New configuration
Default parameter
On an interface that uses PPP as the data link layer protocol, can you configure a static route by specifying the next hop address or outbound interface?
True
False
In the OSPF protocol, which of the following descriptions of DR is correct?
If the priority values of the two routers are equal, the router with the larger Router ID is selected as the DR
By default, all routers in this broadcast network will participate in the DR election
If the priority values of the two routers are different, the router with the lower priority is selected as the DR
The adjacency relationship should also be established between R and BDR
The router needs to modify the destination IP address in the data packet when forwarding the data packet.
True
False
Which of the following OSPF protocol packets can ensure the reliability of LSA update?
LSU
LSACK
LSR
DD
Which of the following fields is not included in the HELLO packet of the OSPF protocol?
Neighbor
Network mask
Sysname
Hellointerval
The Huawei tracert diagnostic attack is used to track the forwarding path of data.
True
False
If the network address of a network is 10.1.1.0, what is its broadcast address?
10.1.1.2
10.1.1.3
10.1.1.4
10.1.1.1
If the broadcast address of a network is 172.16.1.255, what might its network address be?
172.16.2.0
172.16.1.128
172.16.1.1
172.16.1.253
When the IPv4 protocol is used as the network layer protocol, which field is not included in the network layer header?
Source IPv4 address
Sequence number
Destination IPv4 address
TTL
When the router forwards a data packet, if it does not match the corresponding detailed route and there is no default route, it will directly discard the data packet.
True
False
What kind of packets does the OSPF protocol use to send LSAs to neighbors?
LSU
LSACK
LSR
LSA
Apply the ACL configured in the figure in Telnet. Only the device with the IP address of 172.16.105.2 is allowed to log in remotely:
True
False
Regarding the corresponding relationship between the access control list number and type, the following description is correct.
The basic access control list number range is 1000-2999
The number range of the second-level access control list is 4000-4999
The number range of the interface-based access control list is 1000-2000
Advanced access control list number range is 3000-4000
What is the number range of the Layer 2 ACL?
2000-2999
3000-3999
4000-4999
6000-6031
Two authentication domains 'Area1' are configured on a router acting as an authentication server And 'Area.2', If the user uses the correct username'huawei' and password'hello' for authentication. Then which authentication domain will this user be assigned to?
Authentication domain 'Area 1'
Authentication domain 'default domain'
What is the destination IP address of the DHCP DISCOVER message?
127.0.0.1
224.0.0.1
224.0.0.2
255.255.255.255
Which of the following IEEE802.11 standards does not support the 5GHz frequency band for communication?
802.11g
802.11aC.wave 2
802.11aC.wave 1
802.11n
In the history of WLAN development, which of the following is not included in the main wireless protocol standards in the primary mobile office era?
802.11g
802.11a
802.11b
802.11ac
The protocol uses the P/A mechanism to speed up the upstream port's transition to the Forwarding state, but what is the reason for no temporary loop?
Ensure that there will be no temporary loops through the synchronization mechanism
Speed up port role election
Reduced the time of Forward.Delay
Edge port
The router running the OSPF protocol can reach the FULL state after completing the LSDB synchronization.
True
False
Protocol Priority Switch A. and Switch B. adopt LACP mode link aggregation, and all interfaces join the link aggregation group. At the same time, set the maximum number of active ports to 3. Then which port of switch A is not an active port?
G0/0
G0/0
G0/0
G0/0/0
Which information of the data frame is used by the interface to determine whether to forward Layer 2 or Layer 3 forwarding?
Source IP
Source MAC
Destination port
Destination MAC
In order to distinguish between different users and provide different network services on the AP. Which of the following can be configured through configuration?
VT
VAP
VAC
WAP
Network equipment running the SNMP protocol can take the initiative to report alarm information so that network administrators can find faults in time.
True
False
The IPv6 protocol uses NS and NA packets for duplicate address detection.
True
False
Which of the following methods can read data non-blocking in Python's telnetlib?
telnet_Read_all
telnet_read_very_lazy
telnet._read_eager
telnet_read._very_eager
Which of the following commands can change the device name to huawei?
Hostname Huawei
Sysname Huawei
Rename Huawei
Do name Huawei
Which of the following are not the characteristics of a small campus network?
Low number of users
Single network level
Simple network requirements
Wide coverage
Which statement about the OSPF protocol DR is correct?
DR must be the highest priority device in the network
Router ID, the larger the value, the more preferred it is to be elected as DR
DR election is preemptive
An interface priority is 0, then the interface cannot be a DR
As shown in the figure below, host A and host B cannot communicate?
True
False
The following rules exist in an ACL of a router. Rule deny top source192.168, 1.00.0.0.255 destination 172.16.10.1 0.0.0.0 destination-port eq 21 is the correct statement?
sourceIP is 192.168.1.1, destination P is 172.16.10.1, and all TCP packets with destination port number 21 match this rule
The source IP is 192.168.1.1, the destination IP is 172.16.10.2, and all TCP packets whose destination port number is 21 match this rule
Rule sourceIP is 192.168.1.1, the destination IP is 172.16.10.3, and all TCP packets with the destination port number of 21 match this rule
The type of ACL is basic ACL
Which of the following parameters cannot be used for advanced access control lists?
Agreement number
Destination port number
Physical interface
time limit
Which of the following is not included in AAA?
Audit
Authentication
Authorization
Accounting
If a windows host is started for the first time, if it uses DHCP to obtain an IP address, what is the source IP address of the first packet sent by this host?
0.0.0.0
169.254.2.33
255.255.255.255
127.0.0.1
Which of the following IE802.11 standards only supports the 24GHz frequency band for communication?
802.11n
802.11g
802.11ax
802.11a
Which packet type is used by network devices running the SNMPv1 protocol to actively send alarm information?
Trap
Response
Get Request
Get-Next Request
By default, network devices running the SNMPv2C protocol use which of the following port numbers to send trap messages to the network management system?
6
161
17
162
Which of the following types of addresses are not included in IPv6 addresses?
Anycast address
Broadcast address
Unicast address
Multicast address
The IPv6 protocol uses NS and NA packets for duplicate address detection?
True
False
Telnetlib is a module that implements the Telnet protocol that comes with Python?
True
False
In the VRP interface, use the command startup saved-configuration backup.cfg. Configure the backup.cfg file to be used at the next startup?
True
False
The two-layer switch is a data link layer device, which can identify the MAC address information in the data frame, and record these MAC addresses and corresponding port information in its own MAC address table?
True
False
ifoneLength/Type = 0X8100 taught by the Ethernet data, which of the following is correct?
This data frame must carry VLAN TAG
There must be a UDP header in the upper layer of this data frame
The upper layer of this data frame must exist IP header
There must be a TCP header in the upper layer of this data frame
Ethernet_I containing the Ethernet header What is the length of the frame?
60-1560B
46-1500B
64-1500B
64-1518B
By default, the bridge priority of Huawei switches is 32768?
True
False
If the configured ACL rules have an inclusive relationship, it should be noted that the rule numbers of strict conditions need to be sorted first, and the rule numbers of loose conditions need to be sorted later to prevent packets from hitting the rules of loose conditions and stop being pushed down to continue matching. Cannot hit the strict conditions of the rules?
True
False
A network administrator of a company wants to be able to remotely manage the network equipment of the branch. Which of the following protocols will be used?
RSTP
VLSM
CIDR
Telnet
The ACL on the ARG3 series routers supports two matching sequences, configuration sequence and automatic sorting?
True
False
Which of the following parameters cannot be used for advanced access control lists?
Physical interface
time limit
Agreement number
Destination port number
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?
=-a
=-S
=-d
=-1n
Which of the following statements about the usage scenarios of the DHCP protocol is correct?
network does not allow multiple DHCP servers
After receiving the DHCP request or response message, the DHCP relay does not modify the message format and forwards it directly
If the DHCP client and the DHCP server are not on the same network segment, the DHCP relay needs to be used to forward DHCP messages
DHCP client and DHCP server must be connected to the same switch
Which of the following attributes cannot be used as a parameter to measure Cost?
Time delay
Hop count
sysname
bandwidth
To ensure that the same data flow is forwarded on the same physical link, which load sharing method does the Eth-Trunk adopt?
Flow-based load sharing
Packet-based load sharing
Load sharing based on application layer information
Load sharing based on data packet inbound interface
Which of the following commands configures the authentication mode as HWTACACS authentication?
authentication-mode none
authentication-mode local
authentication-mode hwtacacs
authorization mode hwtacacs
The network administrator has captured a data frame on the network, and its destination MAC address is 01-00-5E-A0-B1-C3. The correct statement about the MAC address is?
It is a multicast MAC address
It is a unicast MAC address
It is a broadcast MAC address
It is an illegal MAC address
What is the length of the basic IPv6 header in bytes?
40
64
48
32
Which of the following IEEE802.11 standards does not support communication in the 5GHz frequency band?
802.11aC.wave 2
802.11g
802.11n
802.11aC.wave 1
The configuration of the country code will affect the frequency used for actual transmission and the maximum transmission power?
True
False
A device has been configured to complete Telnet configuration. The device login address is 10.1.1.10. The Telnet user name is admin and the password is Huawei@123. The following is the correct way to use telnetlib to log in to this device?
telnetlib.Telnet (10.1.1.0
telnetlib.Telnet (10.1.1.0, admin
