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H12-811_V1.0 HCIA-Datacom V1.0 Exam Question and Answers

Question # 4

Which of the following statements is false about OSPF area partitioning?

A.

Only Area Border Routers (ABRs) can function as the Autonomous System Boundary Routers (ASBRs).

B.

Area 0 is the backbone area, and other areas must be connected to this area.

C.

OSPF area partitioning can reduce the LSDB size of the router.

D.

The Link-State Databases (LSDBs) of routers are the same in the same OSPF area.

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Question # 5

What is the protocol of the Router Advertisement (RA) packet, which is used in IPv6 stateless address auto-configuration?

A.

TCPv6

B.

ICMPv6

C.

UDPv6

D.

IGMPv6

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Question # 6

A trunk interface allows frames from multiple VLANs including VLAN 4096.

A.

TRUE

B.

FALSE

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Question # 7

The following figure shows the display interface Eth-Trunk 1 command output on SWA. In the MAC address table of SWA, which of the following interfaces maps the MAC address of SWB?

A.

GigabitEthernet0/0/1

B.

Eth-Trunk 1

C.

GigabitEthernet0/0/3

D.

GigabitEthernet0/0/2

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Question # 8

Which of the following traffic can be filtered by an advanced ACL on a Huawei device?

A.

Network traffic based on a specific source IP address

B.

Network traffic based on a specific source MAC address

C.

Network traffic based on a specific user name

D.

Network traffic based on a specific port number

E.

Network traffic based on a specific destination IP address

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Question # 9

The router ID of the OSPF-enabled router must be the same as the IP address of an interface on the router.

A.

TRUE

B.

FALSE

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Question # 10

(An Eth-Trunk interface can be used only as a Layer 2 interface.)

A.

TRUE

B.

FALSE

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Question # 11

According to OSI reference model, which layer is responsible for end-to-end error checking and flow control?

A.

Network layer

B.

Physical layer

C.

Data link layer

D.

Transport layer

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Question # 12

Which of the following statements is true about root bridge election in STP?

A.

The device with the largest bridge priority becomes the root bridge.

B.

If the bridge priorities of devices are the same, the device with the largest MAC address becomes the root bridge.

C.

The device with the smallest bridge priority becomes the root bridge.

D.

If the bridge priorities are the same, the device with the largest number of ports becomes the root bridge.

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Question # 13

According to the VTY user interface configuration shown in the following figure, the user level is set to 3.

A.

TRUE

B.

FALSE

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Question # 14

RADIUS is a common protocol for implementing AAA.

A.

TRUE

B.

FALSE

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Question # 15

Which of the following packets is used by network devices running SNMPv1 to proactively send alarm information?

A.

Response

B.

Trap

C.

Get-Next Request

D.

Get-Request

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Question # 16

Dynamic routing protocols can automatically adapt to network topology changes.

A.

TRUE

B.

FALSE

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Question # 17

Following a failure of services in the network, an administrator discovered that the configuration in one of the enterprise routers had been changed. What actions can be taken by the administrator to prevent further changes?

A.

The administrator should configure an ACL to allow only the administrator to manage the router.

B.

The administrator should configure port-security on the router.

C.

The administrator should limit access by setting the login privilege of users to level 0.

D.

The administrator should configure AAA to manage user authorization on the router.

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Question # 18

As shown in the figure, RTA uses NAT and has an address pool configured to implement many-to-many non-NAPT address translation, so that hosts on the private network can access the public network. Assume that the address pool has only two public IP addresses, which are translated for Host A and Host B. If Host C wants to access the public network, which of the following statements is true?

A.

All hosts use public IP addresses in turn and can access the public network.

B.

No public IP address is assigned to Host C, and Host C cannot access the public network.

C.

RTA performs NAT based on the source port number of Host C, and Host C can access the public network.

D.

RTA assigns an interface address (200.10.10.3) to Host C, and Host C can access the public network.

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Question # 19

Which of the following frequency bands are supported by IEEE 802.11n?

A.

2.5 GHz

B.

2.4 GHz

C.

5 GHz

D.

6 GHz

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Question # 20

Refer to the following configuration of an interface on a switch. For which VLAN does the interface remove VLAN tags before forwarding data frames?

go

CopyEdit

interface GigabitEthernet0/0/1

port link-type trunk

port trunk pvid vlan 10

port trunk allow-pass vlan 10 20 30 40

A.

30

B.

40

C.

20

D.

10

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Question # 21

When a host uses the stateless address autoconfiguration solution to obtain an IPv6 address, the host cannot obtain the DNS server address.

A.

TRUE

B.

FALSE

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Question # 22

When an Ethernet frame is received by an interface on a Layer 2 Ethernet switch, which field is used to generate an entry in the MAC address table?

A.

Destination MAC address

B.

Source MAC address

C.

Source IP address

D.

Destination IP address

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Question # 23

Which of the following percentage does the lease time of a DHCP client's IP address reach to trigger the DHCP client to send a lease renewal packet for the first time?

A.

0.875

B.

0.5

C.

0.25

D.

1

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Question # 24

In the figure, bridge IDs of SWA, SWB, SWC, and SWD have been marked. After the stp root secondary command is run on SWD, which switch will be selected as the root bridge?

A.

SWC

B.

SWA

C.

SWD

D.

SWB

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Question # 25

In which state does OSPF determine the master/slave relationship of DD packets?

A.

Full

B.

Exchange

C.

2-way

D.

ExStart

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Question # 26

Which of the following are true about the Ethernet data frame with the "Length/Type" field being 0x0806?

A.

The source MAC address of the data frame is definitely not FFFF-FFFF-FFFF.

B.

The data frame is an Ethernet II frame.

C.

The data frame is an IEEE 802.3 frame.

D.

The destination MAC address of the data frame must be FFFF-FFFF-FFFF.

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Question # 27

How many VLANs are created when using the following commands?

vlan batch 10 20

vlan batch 10 to 20

A.

11 and 2

B.

2 and 11

C.

2 and 2

D.

11 and 11

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Question # 28

Which of the following commands is used to configure the country code on an AC?

A.

country-code

B.

province-code

C.

nation-code

D.

state-code

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Question # 29

As shown in the figure, the host has ARP cache. Host A sends a data packet to host B. Which of the following are the destination MAC address and destination IP address of the data packet?

A.

MAC-A, 11.0.12.1

B.

MAC-C, 11.0.12.1

C.

MAC-C, 10.0.12.2

D.

MAC-B, 11.0.12.1

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Question # 30

Which of the following is the default value of the Router Dead Interval field in OSPF Hello packets on a broadcast network?

A.

20 seconds

B.

30 seconds

C.

40 seconds

D.

10 seconds

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Question # 31

Which of the following BIDs cannot be contained in a configuration BPDU sent by a switch?

A.

0 10-01-02-03-04-05

B.

0 00-01-02-03-04-05

C.

32768 06-01-02-03-04-05

D.

4096 01-01-02-03-04-05

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Question # 32

Refer to the following configuration of a switch interface. Which of the following statements is false?

interface GigabitEthernet0/0/1

port link-type trunk

port trunk pvid vlan 200

port trunk allow-pass vlan 100

A.

If the VLAN tag carried in a data frame is 100, the switch removes the VLAN tag before sending the data frame.

B.

If the interface receives data frames without VLAN tags, the switch needs to tag the data frames with VLAN 200.

C.

The interface cannot send data frames tagged with VLAN 200.

D.

The link type of the interface is trunk.

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Question # 33

By referring to the topology and the configurations of G0/0/1 interfaces on LSW1 and LSW2 shown in the figure, it can be determined that data frames tagged with VLAN 10 can be normally forwarded between LSW1 and LSW2.

A.

TRUE

B.

FALSE

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Question # 34

Which of the following WLAN security policies support open link authentication?

A.

WPA

B.

WEP

C.

WPA2-PSK

D.

WPA2-802.1X

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Question # 35

Which of the following statements about VLANIF interfaces is/are correct?

A.

Different VLANIF interfaces can use the same IP address.

B.

A VLANIF interface is a Layer 3 interface.

C.

VLANIF interfaces do not need to learn MAC addresses.

D.

A VLANIF interface does not have a MAC address.

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Question # 36

Which of the following port states are included in Rapid Spanning Tree Protocol (RSTP)?

A.

Discarding

B.

Forwarding

C.

Learning

D.

Listening

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Question # 37

After an Eth-Trunk in LACP mode is created, devices on both ends send LACPDUs to elect the Actor. Which of the following parameters in LACPDUs determine the Actor election?

A.

Device priority

B.

Interface number

C.

MAC address

D.

Interface priority

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Question # 38

The load balancing modes at both ends of an Eth-Trunk can be different.

A.

TRUE

B.

FALSE

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Question # 39

What is used as the data link-layer MAC address that identifies each VAP on an AP?

A.

BSS

B.

SSID

C.

BSSID

D.

ESS

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Question # 40

Which of the following statements is true about the Forward Delay timer of STP?

A.

Reduce the interval for sending BPDUs.

B.

Improve the STP convergence speed.

C.

Improve the configuration BPDU lifetime, ensuring that the configuration BPDUs can be forwarded to more switches.

D.

Prevent temporary loops.

E.

Delay is required when a port transitions between Blocking and Disabled.

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Question # 41

Which of the following commands sets the data forwarding mode on an AC to direct forwarding?

A.

forward mode tunnel

B.

forward-mode direct-forward

C.

forward-mode capwap-forward

D.

forward-mode direct

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Question # 42

Which of the following statements about the network shown in the figure is true?

A.

The sub-interface of Router B cannot learn the MAC address of the sub-interface of Router A.

B.

The sub-interface of Router A cannot learn the MAC address of the sub-interface of Router B.

C.

The sub-interface numbers of Router A and Router B are different, so Router A and Router B cannot communicate with each other.

D.

The host at 10.0.12.1 can ping the host at 10.0.12.2.

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Question # 43

Which of the following IEEE 802.11 standards supports the 2.4 GHz frequency band only?

A.

802.11a

B.

802.11g

C.

802.11n

D.

802.11ax

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Question # 44

For multiple paths to the same destination network, the router needs to compare the preference values of the paths. If the preference values are the same, the router selects the paths based on the cost value.

A.

TRUE

B.

FALSE

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Question # 45

Which extension headers are supported by IPv6 packets?

A.

VLAN extension header

B.

Fragment extension header

C.

Destination Options header

D.

Hop-by-Hop Options header

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Question # 46

What is the TPID value defined by IEEE 802.1Q?

A.

0x9100

B.

0x8100

C.

0x8200

D.

0x7200

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Question # 47

On the network shown in the figure, host A logs in to router A through Telnet and obtains the configuration file of router B through FTP on the remote CLI. How many TCP connections exist on router A?

A.

1

B.

3

C.

4

D.

2

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Question # 48

What packet types are included in DHCP?

A.

DHCP Discover packet

B.

DHCP Request packet

C.

DHCP Rollover packet

D.

DHCP Offer packet

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Question # 49

The network administrator has decided to configure link aggregation in the enterprise network. Which of the following represent advantages of link aggregation?

A.

Load balancing.

B.

Improved bandwidth.

C.

Enhanced reliability.

D.

Improved security.

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Question # 50

Refer to the graphic, 00e0-fc99-9999 is a specific host MAC address learned by a switch through ARP, and the host changes the IP address three times.

A.

TRUE

B.

FALSE

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Question # 51

To provide the information about the IP addresses that a user packet traverses along the path to the destination, which of the following does Tracert record in each expired ICMP TTL packet?

A.

Source port.

B.

Destination IP address.

C.

Source IP address.

D.

Destination port.

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Question # 52

What is the default lease time of the IP address allocated by the DHCP server?

A.

18 hours

B.

12 hours

C.

1 hour

D.

24 hours

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Question # 53

While inspecting packets in the network, a network administrator discovers a frame with the destination MAC address of 01-00-5E-A0-B1-C3. What can the administrator determine from this?

A.

The MAC address is incorrect.

B.

The MAC address is a multicast address.

C.

The MAC address is a broadcast address.

D.

The MAC address is a unicast address.

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Question # 54

Which of the following is not a common network layer in a midsize campus network?

A.

Core layer

B.

Network layer

C.

Access layer

D.

Aggregation layer

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Question # 55

Which of the following advantages is/are provided by inter-VLAN routing in one-arm routing mode?

A.

Reduced use of IP addresses

B.

Reduced number of links

C.

Reduced number of entries in the routing table

D.

Reduced number of devices

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Question # 56

Which of the following ACLs can match the transport layer port number?

A.

Basic ACL

B.

Layer 2 ACL

C.

Advanced ACL

D.

Intermediate ACL

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Question # 57

If the packet matches the deny rule in an ACL, the packet is discarded.

A.

TRUE

B.

FALSE

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Question # 58

What is used as the data link-layer MAC address that identifies each VAP on an AP?

A.

BSSID

B.

SSID

C.

BSS

D.

ESS

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Question # 59

If the application-layer protocol is Telnet, what is the value of the "Protocol" field in the IPv4 header?

A.

67

B.

53

C.

6

D.

17

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Question # 60

Which of the following statements are true about the shortcut keys of the Versatile Routing Platform (VRP)?

A.

Press "TAB" to view the latest command.

B.

Press "CTRL+Z" to return to the user view.

C.

Press the left cursor key (←) to move the cursor one bit leftwards.

D.

Press "CTRL+C" to stop operation of the current command.

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Question # 61

Which of the following ACLs cannot match network layer information?

A.

User ACL

B.

Advanced ACL

C.

Basic ACL

D.

Layer 2 ACL

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Question # 62

Which of the following network types does OSPF support?

A.

Broadcast.

B.

Point-to-Point.

C.

Non-Broadcast Multi-Access (NBMA).

D.

Point-to-Multipoint.

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Question # 63

On Huawei AR G3 Series routers, which authentication modes does AAA support?

A.

Radius

B.

None

C.

Local

D.

802.1X

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Question # 64

In STP, which of the following items may affect the selection of the root switch?

A.

Switch interface bandwidth

B.

Switch priority

C.

Switch MAC address

D.

Switch port ID

E.

Switch IP address

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Question # 65

After a switch restarts, static MAC address entries saved on the switch remain in the MAC address table.

A.

TRUE

B.

FALSE

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Question # 66

Static NAT can only implement one-to-one mapping between private and public addresses.

A.

TRUE

B.

FALSE

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Question # 67

Which of the following WLAN security policies support open link authentication?

A.

WPA2-PSK

B.

WPA

C.

WEP

D.

WPA2-802.1X

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Question # 68

When the header length of an IPv4 data packet is 20B and the total packet length is 1500B, what is the valid payload of the packet?

A.

1520B

B.

20B

C.

1500B

D.

1480B

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Question # 69

What is the number range of an advanced ACL?

A.

2000-2999

B.

3000-3999

C.

6000-6031

D.

4000-4999

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Question # 70

On the network shown in the figure, HOST A and HOST B are required to communicate with each other across VLANs through one-armed routing. To satisfy this requirement, which of the

following commands needs to be performed on G0/0/1.1 of RTA?

A.

dot1q termination vid 20

B.

dot1q termination vid 30

C.

dot1q termination vid 10

D.

dot1q termination vid 1

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Question # 71

What is the length range of an Ethernet_II frame that contains an Ethernet header?

A.

64-1518 bytes

B.

60-1560 bytes

C.

64-1500 bytes

D.

46-1500 bytes

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Question # 72

When redundant links exist on a switching network, STP can be used to eliminate loops.

A.

TRUE

B.

FALSE

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Question # 73

For STP, the default root path cost of the root bridge is 0.

A.

TRUE

B.

FALSE

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Question # 74

If AAA authentication is used on Huawei devices and the remote server does not respond, the authentication can be performed on network devices.

A.

TRUE

B.

FALSE

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Question # 75

Which of the following parameters is not contained in STP configuration BPDUs?

A.

Bridge ID

B.

VLAN ID

C.

Root ID

D.

Port ID

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Question # 76

If the MAC address of an interface is 00E0-FCEF-0FEC, the corresponding EUI-64 address is ( ).

A.

02E0-FCFF-FEEF-0FEC

B.

02E0-FCEF-FFFE-0FEC

C.

00E0-FCEF-FFFE-0FEC

D.

00E0-FCFF-FEEF-0FEC

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Question # 77

(Which of the following descriptions regarding the STP forwarding state is incorrect?)

A.

A port in a forwarding state can send BPDU.

B.

A port in a forwarding state does not learn the source MAC address of a frame.

C.

A port in a forwarding state can receive BPDU.

D.

A port in a forwarding state can forward frames.

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Question # 78

When a router is powered on, the router reads the configuration file saved in the default save directory to get itself initialized. If the configuration file does not exist in the default save directory, what does the router use to initialize itself?

A.

Default parameters.

B.

Initial configuration file.

C.

Current configuration file.

D.

New configuration file.

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Question # 79

Which of the following sources of routes can be obtained by a router?

A.

Static routes

B.

Direct routes

C.

Summary routes

D.

Dynamic routes

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Question # 80

Refer to the graphic, which of the following statements is true about OSPF topology and configuration?

A.

Compared with R1, R2 is more likely to become the DR because the DR priority of the interface on R2 is lower than that of R1.

B.

After the default network type of the interface on R1 is restored to broadcast, a stable OSPF neighbor relationship can be set up between R1 and R2.

C.

After the default network type of the interface on R1 is restored to broadcast and the hello packet sending interval is changed to 10s, a stable OSPF neighbor relationship can be set up between R1 and R2.

D.

A stable OSPF neighbor relationship can be set up between R1 and R2.

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Question # 81

On the network shown in the following figure, assuming that SWA, SWB, and SWC retain factory defaults, which of the following ports will be selected as a designated port?

A.

G0/0/2 on SWC

B.

G0/0/3 on SWA

C.

G0/0/1 on SWB

D.

G0/0/1 on SWC

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Question # 82

If the network administrator assigns the IPv4 address 192.168.1.1/28 to a host on the network, how many hosts can be added to the network where the host resides?

A.

13

B.

15

C.

14

D.

12

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Question # 83

What is the total length of the port ID in STP?

A.

16 bits

B.

4 bits

C.

8 bits

D.

2 bits

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Question # 84

What protocol does OSPF run over?

A.

TCP

B.

HTTP

C.

UDP

D.

IP

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Question # 85

An ACL rule is as follows. Which of the following IP addresses can be matched by the permit rule?

rule 5 permit ip source 10.0.2.0 0.0.254.255

A.

10.0.6.7

B.

10.0.5.6

C.

10.0.4.5

D.

10.0.2.1

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Question # 86

Network Address and Port Translation (NAPT) allows multiple private IP addresses to be mapped to the same public IP address through different port numbers. Which of the following statements about port numbers in NAPT is true?

A.

Only the port number range needs to be configured.

B.

The mappings between port numbers and private IP addresses must be manually configured.

C.

An ACL is required to allocate port numbers.

D.

No port number needs to be configured.

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Question # 87

On an STP-enabled switch, a port in the forwarding state can receive BPDU packets.

A.

TRUE

B.

FALSE

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Question # 88

NAPT differentiates IP addresses of different users based on protocol ID in TCP, UDP, or IP packets.

A.

TRUE

B.

FALSE

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Question # 89

On Huawei routers, which of the following is the default preference of static routing?

A.

0

B.

100

C.

60

D.

120

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Question # 90

(If a routing table contains multiple routes to the same destination network, what are these routes called?)

A.

Sub-optimal routes

B.

Multipath routes

C.

Equal-cost routes

D.

Default routes

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Question # 91

As shown in the figure, the configuration of Router A is as follows. Which of the following statements is/are incorrect?

A.

The host with the source IP address 200.0.12.6 cannot access the Internet.

B.

The host with the source IP address 200.0.12.8 cannot access the Internet.

C.

The host with the source IP address 200.0.12.2 cannot access the Internet.

D.

The host with the source IP address 200.0.12.4 cannot access the Internet.

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Question # 92

Which of the following application-layer protocols are based on TCP?

A.

TFTP

B.

HTTP

C.

FTP

D.

Ping

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Question # 93

When a host uses the IP address 192.168.1.2 to access the Internet, NAT must be performed.

A.

TRUE

B.

FALSE

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Question # 94

If Spanning Tree Protocol (STP) is disabled on the network consisting of switches, a Layer 2 loop will definitely occur.

A.

TRUE

B.

FALSE

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Question # 95

When two switches are connected through link aggregation, what are the requirements for the interfaces on the two switches?

A.

The physical interface rates of the interconnected switches are the same.

B.

The physical interface quantities of the interconnected switches are the same.

C.

The models of the optical modules used by the interconnected switches are the same.

D.

The duplex modes of the physical interfaces on the interconnected switches are the same.

E.

The physical interface IDs of the interconnected switches are the same.

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Question # 96

Which of the following are advantages of stacking and CSS (Cluster Switch System) technologies?

A.

The inter-chassis Eth-Trunk can be deployed.

B.

Devices are virtualized into one logical device, simplifying device management.

C.

They increase the number of ports.

D.

They effectively prevent single points of failure.

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Question # 97

With SNMP, an NMS can only display the device running status but cannot deliver configurations.

A.

TRUE

B.

FALSE

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Question # 98

If the broadcast address of a network is 172.16.1.255, which of the following addresses is the network address?

A.

172.16.1.128

B.

172.16.1.1

C.

172.16.2.0

D.

172.16.1.253

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Question # 99

On the network shown in the figure, VLAN 2 is created on SWA and SWB, and interfaces connected to hosts are access ports added to VLAN 2. G0/0/1 on SWA and G0/0/2 on SWB are trunk interfaces allowing all VLANs. What additional configuration is needed on SWC to ensure communication between Host A and Host B?

A.

Create VLAN 2 on SWC.

B.

Configure G0/0/1 on SWC as a trunk interface that allows packets from VLAN 2 to pass through.

C.

Create VLAN 2 on SWC, and configure G0/0/1 and G0/0/2 as trunk interfaces that allow packets from VLAN 2 to pass through.

D.

On SWC, configure G0/0/1 as a trunk interface that allows packets from VLAN 2 to pass through, configure G0/0/2 as an access interface, and set the PVID to 2.

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Question # 100

Which of the following parameters is not used by an Advanced ACL?

A.

Source interface.

B.

Destination port number.

C.

Protocol number.

D.

Time-range.

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Question # 101

Which of the following fields are included in an MPLS header?

A.

Label

B.

TTL

C.

EXP

D.

Tos

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Question # 102

The router ID of the OSPF process takes effect immediately after being changed.

A.

TRUE

B.

FALSE

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Question # 103

The following figure shows the configuration of a sub-interface on a router. For which VLAN does the sub-interface receive tagged data frames?

A.

20

B.

1

C.

30

D.

100

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Question # 104

The data link layer uses PPP encapsulation. The IP addresses of the two ends of the link can be in different network segments.

A.

TRUE

B.

FALSE

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Question # 105

Which of the following statements is true about direct routes?

A.

The administrator needs to manually configure the destination network and next-hop address for the direct route.

B.

The priority of the direct route is lower than that of the dynamic route.

C.

The direct route has the highest priority.

D.

The priority of the direct route is lower than that of the static route.

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