HCIA Datacom - 2021
Question 1
Question text
The TCP protocol uses the three-way handshake mechanism to establish and disable connections. Therefore, TCP supports reliable data
transmission
Select one:
a. True
b. False
Question 2
Correct
Mark 1 out of 1
Question text
A NAS performs domain-based user management. A domain is a group of users and each user belongs to a domain
Select one:
a. True
b. False
Question 3
Correct
Mark 1 out of 1
Flag question
Question text
On the command line interface of Huawei AR routers, the role of the Save command is to Save the current system time.
Select one:
a. False
b. True
Question 4
Correct
Mark 1 out of 1
Flag question
Question text
When the "delete vrpcfg.zip" command is run on the user interface of the Versatile Routing Platform (VRP), the file can be permanently
deleted only after its cleared from the recycle bin
Select one:
a. True
b. False
Question 5
Correct
Mark 1 out of 1
Flag question
Question text
By default, it takes at least 30 seconds for an STP-enabled port transition from disabled to forwarding
Select one:
a. False
b. True
Question 6
Correct
Mark 1 out of 1
Flag question
Question text
When the ACL in the following figure is configured on a Telnet server, only the device with an IP address of 172.16.105.2 can remotely
log into the Telnet server.
no.6
Select one:
a. True
b. False
Question 7
Correct
Mark 1 out of 1
Flag question
Question text
ACLs on AR G3 series routers, support configuration and auto sequences
Select one:
a. True
b. False
Question 8
Question text
The data link layer uses PPP encapsulation. The IP addresses of the two ends of the link can be in different network segments
Select one:
a. False
b. True
Question 9
Correct
Mark 1 out of 1
Flag question
Question text
None of the 14 available channels on the 2.4 GHz frequency band overlaps.
Select one:
a. False
b. True
Question 10
Correct
Mark 1 out of 1
Flag question
Question text
Fit APs can provide wireless services independently of an AC.
Select one:
a. False
b. True
Question 11
Incorrect
Mark 0 out of 1
Flag question
Question text
The IPv6 address 2001:ABEF:224E:FFE2:BCC0:CD00:DDBE:8D58 cannot be abbreviated.
Select one:
a. False
b. True
Question 12
Correct
Mark 1 out of 1
Flag question
Question text
When Fit Aps go online on an AC, they will necessarily download the system software package from the AC
Select one:
a. False
b. True
Question 13
Incorrect
Mark 0 out of 1
Flag question
Question text
In RSTP, a backup port can replace a faulty root port.
Select one:
a. True
b. False
Question 14
Correct
Mark 1 out of 1
Flag question
Question text
The tree topology is a hierarchical star topology, facilitating network expansion. A consequence of this topology is that faults on a node
at a higher layer are more severe
Select one:
a. False
b. True
Question 15
Correct
Mark 1 out of 1
Flag question
Question text
By referring to the network structure and OSPF areas shown in the figure, it can be determined that all routers on the network except
RTA are ABRs
Select one:
a. False
b. True
Question 16
Correct
Mark 1 out of 1
Flag question
Question text
All interfaces on a router belong to the same broadcast domain
Select one:
a. True
b. False
Question 17
Incorrect
Mark 0 out of 1
Flag question
Question text
telnet.read_very_eager() in telnetlib is used to read all data that can be read without blocking in I/O (eager). telnet.read_very_eager()
typically needs to be used together with the time module
Select one:
a. True
b. False
Question 18
Correct
Mark 1 out of 1
Flag question
Question text
The source IP address or source interface of the CAPWAP tunnel can be manually specified on an AC
Select one:
a. False
b. True
Question 19
Incorrect
Mark 0 out of 1
Flag question
Question text
Only the WPA2-PSK security policy supports TKIP data encryption
Select one:
a. False
b. True
Question 20
Incorrect
Mark 0 out of 1
Flag question
Question text
The data link layer uses PPP encapsulation. The IP address of the two ends of the link can be in different network segments
Select one:
a. True
b. False
Question 21
Correct
Mark 1 out of 1
Flag question
Question text
If the value of the "Type/Length" field of an Ethernet data frame is 0x0800, the length range of the upper-layer packet header carried by
the data frame is from 20B to 60B
Select one:
a. False
b. True
Question 22
Correct
Mark 1 out of 1
Flag question
Question text
The default bridge priority of a Huawei switch is 32768.
Select one:
a. False
b. True
Question 23
Incorrect
Mark 0 out of 1
Flag question
Question text
The following figure shows the routing table of a router. When the router receives a data packet destined for 9.1.1.1, the router forwards
the packet based on the route 9.1.0.0/16. This is because this route has a longer mask
Select one:
a. False
b. True
Question 24
Correct
Mark 1 out of 1
Flag question
Question text
In RSTP, an edge port becomes a common STP port after receiving a configuration BPDU
Select one:
a. False
b. True
Question 25
Correct
Mark 1 out of 1
Flag question
Question text
More than two switches can be stacked into one logical device
Select one:
a. True
b. False
Question 26
Correct
Mark 1 out of 1
Flag question
Question text
The default bridge priority of a Huawei switch is 32768.
Select one:
a. True
b. False
Question 27
Correct
Mark 1 out of 1
Flag question
Question text
For STP, the Message Age in the configuration BPDUs sent by the root bridge is 0
Select one:
a. True
b. False
Question 28
Incorrect
Mark 0 out of 1
Flag question
Question text
STAs can discover a WLAN only when APs send Beacon frames
Select one:
a. True
b. False
Question 29
Incorrect
Mark 0 out of 1
Flag question
Question text
Ethernet frames are processed and forwarded in a switch based on their VLAN tags
Select one:
a. True
b. False
Question 30
Correct
Mark 1 out of 1
Flag question
Question text
On an interface that uses PPP as the data link layer protocol, you can configure a static route by specifying a next-hop address or
outbound interface
Select one:
a. True
b. False
Question 31
Correct
Mark 1 out of 1
Flag question
Question text
VLANs can be assigned based on service types during campus network planning
Select one:
a. False
b. True
Question 32
Incorrect
Mark 0 out of 1
Flag question
Question text
A layer 2 ACL can match information such as the source MAC address, destination MAC address, source IP address, and destination IP
address.
Select one:
a. False
b. True
Question 33
Correct
Mark 1 out of 1
Flag question
Question text
You can run the “startup saved-configuration backup.cfg” command on the user interface of the Versatile Routing Platform (VRP) to
specify the “backup’cfg” file as the configuration file for next startup.
Select one:
a. False
b. True
Question 34
Correct
Mark 1 out of 1
Flag question
Question text
Network Functions Virtualization (NFV) implements software-based network application deployment
Select one:
a. True
b. False
Question 35
Correct
Mark 1 out of 1
Flag question
Question text
A hybrid port can be connected to either a user host or a Switch
Select one:
a. True
b. False
Question 36
Correct
Mark 1 out of 1
Flag question
Question text
Telnet is based on TCP.
Select one:
a. True
b. False
Question 37
Correct
Mark 1 out of 1
Flag question
Question text
The tree topology is a hierarchical star topology, facilitating network expansion. A consequence of this topology is that faults on a node
at a higher layer are more severe.
Select one:
a. True
b. False
Question 38
Correct
Mark 1 out of 1
Flag question
Question text
If a router does not match a specific route when forwarding a packet and there’s no default route, the router discards the packet directly
Select one:
a. True
b. False
Question 39
Correct
Mark 1 out of 1
Flag question
Question text
Telnet.read_all() in telnetlib is used to read all data until end of the file (EOF); block until connection closed.
Select one:
a. False
b. True
Question 40
Incorrect
Mark 0 out of 1
Flag question
Question text
On a network running STP, the root switch is elected only by comparing switch priorities. On a network running RSTP, both the
priorities and MAC addresses of switches will be compared for electing the root switch
Select one:
a. True
b. False