Huawei HCIP-LTE-RNP&RNO (H35-561) Certification Sample Questions

01. An operator evaluates symbol-level power amplifier shutdown for two low-traffic FDD cells using normal cyclic prefix. Cell A transmits CRS on two antenna ports and Cell B on four. At night, many subframes carry no PDSCH, no DCI and no synchronization or broadcast channels, and in those subframes the amplifier may be switched off in every OFDM symbol that carries no CRS.
In such a subframe, in how many of the 14 symbols can each cell switch off its amplifier?
a) Cell A: 10 symbols; Cell B: 8 symbols
b) Cell A: 10 symbols; Cell B: 10 symbols
c) Cell A: 12 symbols; Cell B: 10 symbols
d) Cell A: 4 symbols; Cell B: 6 symbols

02. A planner estimates downlink PDSCH capacity for one RB pair (one resource block over one 1 ms subframe) with normal cyclic prefix. The control region uses CFI = 3. Cell-specific reference signals for two antenna ports occupy 4 REs per RB in each of four OFDM symbols: the first symbol of the subframe and three later symbols that all fall outside the control region. Ignore PBCH, synchronization signals and all other reference signals.
How many REs per RB pair remain for the PDSCH?
a) 116 REs
b) 132 REs
c) 120 REs
d) 96 REs

03. Several cells of an FDD LTE cluster in a suburban area report raised uplink interference. Before assigning work, the engineer compares the interference signatures of four candidate cells and must pass one of them to the spectrum-monitoring team as the likely victim of an external transmitter.
Which cell's signature fits an external source?
a) Cell 1: noise raised across the whole band in busy hours, on every cell of the cluster
b) Cell 3: flat noise on the same few PRBs day and night, also at two nearby sites
c) Cell 2: noise raised across the whole band of this cell only, tracking its own downlink load
d) Cell 4: noise raised on a few PRBs only while a neighboring cell schedules its edge users there

04. An attach trace shows the MME sending Authentication Request and the UE returning Authentication Failure with cause synch failure. The MME then sends a second Authentication Request, the UE answers with Authentication Response, and the attach continues normally.
Which conclusions does this trace support?
(Choose two.)
a) The UE found the challenge's sequence number stale, and the MME resynchronized with the HSS.
b) The MME discarded the UE's GUTI and ran an identity request to obtain the IMSI before retrying.
c) The eNodeB activated access-stratum security before relaying the second challenge to the UE.
d) The eNodeB relayed the authentication exchange transparently in S1AP and RRC transport.

05. A cell's carrier was widened from 10 MHz (50 PRBs) to 20 MHz (100 PRBs). Its downlink PRB utilization is computed as used PRBs divided by available PRBs. In the busy hour, the average number of PRBs in use was 40 before the change and 44 after it.
Which statement correctly describes the busy-hour downlink PRB utilization?
a) 80% before and 88% after; demand rose and the cell is now closer to congestion
b) 80% before and 44% after; busy-hour demand fell after the carrier was widened
c) 80% before and 44% after; demand rose slightly while spare capacity grew
d) 40% before and 44% after; utilization rose in step with the extra demand

06. An operator wants an automatic KPI alert for cells that stay in service but degrade, such as a cell whose RRC setup success rate falls from its usual 99% to 85% while traffic continues. Earlier simple alerts buried the team in false alarms from low-traffic cells at night, where one or two failures swing an hourly rate widely.
Which alert rule best fits this goal?
a) Alert whenever any single hourly value falls below one fixed threshold set for the whole network
b) Alert when the rate stays a margin below the cell's own hourly baseline for several intervals
c) Alert whenever the cell's availability falls below 100% in any single hour of the day
d) Alert whenever the cell's daily average falls below the average across the whole network

07. VoLTE calls drop at the edge of LTE coverage along a highway where UMTS coverage continues. SRVCC is supported by the UEs and the core network. Traces of dropped calls show that the eNodeB configured UMTS measurements well before the failure, UMTS neighbors were measured at good quality, and serving RSRP fell steadily until radio link failure without any B2 report being sent.
Which adjustment should the engineer make?
a) Configure CSFB redirection toward the UMTS carrier
b) Raise the B2 threshold for the UMTS neighbor
c) Lower the A3 offset toward LTE neighbor cells
d) Raise the B2 serving-cell threshold

08. A reference LTE cell with a 20 MHz carrier, 2x2 MIMO and 64QAM has a peak downlink rate of about 150 Mbps. An operator now serves a capable UE with carrier aggregation of two component carriers, both using 256QAM:
- CC1: 20 MHz with 4-layer transmission
- CC2: 10 MHz with 2-layer transmission
Assume the peak rate scales in proportion to bandwidth, layers and bits per modulation symbol, with code rate and overhead unchanged. What is the UE's approximate peak downlink rate?
a) About 500 Mbps
b) About 400 Mbps
c) About 300 Mbps
d) About 375 Mbps

09. Cells on carrier F1 hand UEs over to carrier F2 when F1 coverage weakens. Today, gap-assisted inter-frequency measurement starts when event A2 fires and stops on event A1. To speed up these handovers, an engineer proposes configuring a 6 ms gap every 40 ms for every UE as soon as it connects. Most UEs in these cells stay well inside F1 coverage, and most need gaps to measure F2.
Which assessment of the proposal is correct?
a) Accept it: gaps pause only F1 measurement, not scheduling, so the serving cell's throughput is unaffected
b) Accept it: the gaps fall inside the UEs' DRX off periods, so the faster measurement costs the UEs no scheduling time at all
c) Reject it: each UE needing gaps loses about 15% of its F1 scheduling time, so UEs that never leave F1 pay the cost
d) Reject it: a UE applies a gap pattern only after reporting A2, so the pattern would stay unused

10. An LTE cell admitted many GBR bearers while their UEs were near the site. During an outdoor event, a large share of these UEs moves toward the cell edge. At their lower MCS, the same guaranteed bit rates now need far more PRBs, and the admitted GBR load exceeds what the cell can serve.
Which two actions are appropriate congestion-control responses by the eNodeB?
(Choose two.)
a) Release GBR bearers of the lowest ARP priority until the load fits capacity
b) Reject new GBR bearer requests while the overload persists
c) Change the heaviest GBR bearers to a non-GBR QCI at the eNodeB
d) Release the GBR bearers using the most PRBs first, whatever their ARP