Huawei HCIA-5G (H35-660) Certification Sample Questions

01. A factory wants to move the control loop of a robotic assembly cell onto a wireless link. The controller sends a new position command every cycle and expects a status report back in the same cycle. A command that arrives late, or a cycle that takes noticeably longer than the one before it, makes the motion jerk.
Which two properties of the link must be held within bounds?
(Choose two.)
a) The proportion of status reports that arrive correctly over a shift
b) The variation in that delivery time from one cycle to the next
c) The number of devices the cell's radio coverage can support at once
d) The peak data rate available to the controller during a production shift
e) The time taken to deliver a command and return its status report

02. A transport authority will trial remotely supervised shuttles on a fixed 6 km loop through a business district. Two approaches are on the table: building a dedicated private 5G network along the loop, or buying a service on the public 5G network with an isolated logical network for the shuttle traffic. The authority states its priority plainly: the trial must start within one quarter, and it does not want to own or operate radio equipment.
Which approach best matches the stated priority, and why?
a) The private network, because a dedicated build gives the authority direct control of its own radio coverage
b) The private network, because a trial on a public network cannot keep the shuttle traffic separate from consumer traffic
c) The public-network service, because it removes any need to plan coverage along the route
d) The public-network service, because it needs no equipment of the authority's own

03. An operator will sell residential broadband over its 5G radio network, with each household streaming video and downloading large files at rates comparable to a fixed line.
Which IMT-2020 usage scenario is this service sized against?
a) Fixed wireless access, defined as a fourth usage scenario alongside the other three
b) Massive machine-type communication (mMTC)
c) Enhanced mobile broadband (eMBB)
d) Ultra-reliable low-latency communication (URLLC)

04. A rail freight operator's analytics team holds wagon telemetry as fixed-width numeric records, scanned customs paperwork as images, and free-text incident notes typed by shift supervisors. All three have to feed one analysis of terminal turnaround time.
Which characteristic of big data does this situation principally illustrate?
a) Variety, the mix of structured and unstructured forms in one data set.
b) Volume, the quantity of records held, which exceeds what a single conventional database can carry.
c) Velocity, the rate at which records arrive, are ingested, and must be acted on.
d) Value, the share of collected data that contributes to a decision and justifies the cost of keeping it.

05. A city deploys a system in which an approaching bus broadcasts its position and speed, and a nearby pedestrian's smartphone raises an alert when the pedestrian is about to step into the bus's path.
Which form of V2X communication does this describe?
a) Vehicle-to-network (V2N), covering traffic to application servers
b) Vehicle-to-pedestrian (V2P), covering vulnerable road users carrying devices
c) Vehicle-to-infrastructure (V2I), covering roadside units, signals, and gantries
d) Vehicle-to-vehicle (V2V), covering direct exchange between vehicles

06. An engineer expects a Massive MIMO cell to deliver its full multi-user multiplexing gain, but in one part of the coverage area the gain almost disappears: terminals there are served little better than by a conventional antenna.
What best explains the loss of the multiplexing gain in that area?
a) The terminals there are too close together for the array to separate their channels.
b) The area lies at a shorter distance from the site, where multiplexing gain is not available.
c) The downlink in that area is protected by a stronger channel code than elsewhere.
d) The terminals there are using a narrower subcarrier spacing than the rest of the cell.

07. A retail chain holds three years of transaction records for two million loyalty members and no labels of any kind. It wants to discover naturally occurring groups of similar purchasing behavior so that it can design promotions around each group.
Which machine-learning approach fits this problem?
a) Supervised learning, which infers a mapping from example inputs to labeled outputs.
b) Unsupervised learning, which finds structure in unlabeled data by grouping records that behave alike.
c) Reinforcement learning, which improves a policy from rewards earned by acting in an environment.
d) Deep learning on a labeled training set, which sorts each loyalty member into one of the chain's known promotion classes.

08. An operator has put two proposals to a customer for a warehouse where handheld scanners and fixed inspection cameras will be connected. The cameras have to hold their uplink rate while all of them are recording at the same time. Proposal A is the cheaper of the two and commits an uplink figure for the site as a whole, while Proposal B commits an uplink rate to each connected terminal. The customer has said that it will take the cheaper proposal wherever both would meet its requirement.
Which proposal should be chosen, and on what ground?
a) Proposal A, because its site figure is the larger of the two numbers and therefore covers everything connected at the warehouse.
b) Proposal A, because both proposals describe uplink capacity for the warehouse, so the customer's preference for the cheaper one settles it.
c) Proposal B, because a per-connection figure is the only kind an operator is able to measure at handover.
d) Proposal B, because only a per-connection figure states what one camera holds while the others record.

09. A customer's devices must be admitted to a particular network slice when they connect to a 5G network, and the network has to know which slice each device is asking for.
Which identifier carries that information?
a) International Mobile Subscriber Identity (IMSI), which identifies the subscription
b) Access Point Name (APN), which identifies the external data network a device connects to
c) Single Network Slice Selection Assistance Information (S-NSSAI)
d) Tracking Area Code (TAC), which identifies a group of cells for paging

10. An industry customer is weighing a public 5G operator's offer against building its own private network. Its security team keeps returning to one question: what happens to our production traffic if another of the operator's customers has its own systems compromised?
Which security property is the customer asking the operator to demonstrate?
a) Confidentiality protection, so traffic crossing the radio interface cannot be read by an eavesdropper.
b) Integrity protection, so a message modified in transit is detected before the application acts on it.
c) Mutual authentication, so only devices the customer owns can attach to the network.
d) Isolation, so a compromise in another tenant's systems cannot reach this customer's traffic.