Q: Which of the following are requirements of operations in dangerous areas?

A, B, C Explanation: A comprehensive safety protocol for operations in dangerous areas, as mandated by international occupational health and safety standards and vendor-specific guidelines, requires a multi-faceted approach. This includes administrative controls like formulating emergency and first-aid plans (A), engineering and physical controls such as placing warning signs and isolation barriers to secure the area (B), and the use of personal protective equipment (PPE) and professional tools to safeguard personnel (C). All three options represent distinct, mandatory, and critical safety requirements that must be implemented before and during work in hazardous environments.

Question 1

Only qualified first aiders can rescue the wounded, avoiding further injuries.

Accepted Answer

TRUE

Explanation: Huawei’s Occupational Health & Safety (OHS) rules for installation and maintenance activities explicitly state that the on-site rescue of injured personnel must be carried out only by people who have received formal first-aid training and who hold a valid first-aid certificate. Un-trained staff are instructed to secure the scene and immediately summon professional medical help instead of intervening directly. This requirement is intended to prevent secondary injuries (e.g., spinal damage, uncontrolled bleeding) that can be caused by improper handling of the casualty. Therefore, the statement that “Only qualified first aiders can rescue the wounded, avoiding further injuries” is correct. Why the “False” option is wrong: Selecting “False” would imply that any worker, regardless of first-aid training, may safely rescue an injured person. This contradicts Huawei’s official OHS specification and increases the risk of aggravating the casualty’s condition, which is precisely what the safety policy seeks to avoid.

Question 2

Before disconnecting the IF cable from an IF board, power off the ODD.

Accepted Answer

TRUE

Explanation: The statement is correct, assuming "ODD" is a typographical error for "ODU" (Outdoor Unit), which is the standard terminology in Huawei microwave transmission systems. The Intermediate Frequency (IF) cable that connects the Indoor Unit's (IDU) IF board to the ODU carries not only the IF signals but also the DC power for the ODU. Disconnecting this cable while the ODU is powered on (a "hot-unplug") can cause electrical arcing at the connector. This arc can damage the sensitive electronic components on the IF board port and within the ODU, potentially leading to equipment failure. Therefore, it is a mandatory safety and operational procedure to power off the ODU before disconnecting the IF cable from the IF board.

Question 3

In general, optical fiber transmission delivers lower capacity than microwave transmission.

Accepted Answer

[FALSE]

Explanation: The statement is incorrect. In general, optical fiber transmission offers significantly higher bandwidth and, consequently, a much greater data-carrying capacity than microwave transmission. Optical fiber systems, particularly those using Wavelength Division Multiplexing (WDM), can support data rates in the range of terabits per second (Tbps) over long distances. In contrast, microwave transmission capacity is typically measured in gigabits per second (Gbps) and is constrained by factors such as available frequency spectrum, atmospheric conditions, and potential for interference.

Question 4

During PI installation, ensure that the service ports of the PI face downward before you fix the PI.

Accepted Answer

TRUE

Explanation: This is a mandatory and critical step during the physical installation of a Huawei Power Injector (PI) or Power over Ethernet (PoE) adapter. Orienting the service ports to face downward is essential for environmental protection. This specific orientation prevents the ingress of water, dust, and other debris into the ports, which could otherwise lead to short circuits, corrosion, and eventual equipment failure. This practice ensures the device's Ingress Protection (IP) rating is maintained, safeguarding its operational reliability and longevity, particularly in outdoor or challenging indoor environments.

Question 5

The radiated power of an antenna is basically distributed to the side lobe.

Accepted Answer

FALSE

Explanation: The statement is incorrect. The primary function of a directional antenna is to concentrate its radiated power into a specific, intended direction. This concentration of power forms the main lobe, which contains the vast majority of the antenna's radiated energy. Side lobes are residual, smaller lobes of radiation in unintended directions. In antenna design, side lobes are considered undesirable as they represent wasted power and a potential source of interference. Therefore, the goal is to maximize the power in the main lobe while minimizing the power distributed to the side lobes.

Question 6

On-tower preparations mainly include selecting the azimuth angle and height for pole mounting based on the engineer experience .

Accepted Answer

FALSE

Explanation: The statement is incorrect. The selection of the antenna's azimuth angle and height are critical parameters determined during the network planning and design phase, not during on-tower preparations. This pre-installation phase uses radio network planning software and is based on detailed engineering surveys, coverage objectives, and capacity requirements. The results are finalized in a formal engineering design document. The on-tower preparation and installation phase involves the field engineer's task of precisely implementing the specifications laid out in this pre-approved design document, not selecting these parameters based on personal experience. While experience is valuable for troubleshooting and execution, it does not replace the formal engineering design for fundamental parameters like azimuth and height.

Question 7

After an antenna was hoisted to the tower, the lifting rope can be lefle antenn a.

Accepted Answer

FALSE

Explanation: The statement is incorrect. Leaving a lifting rope attached to an antenna after it has been hoisted and secured is a major safety violation and contradicts standard installation procedures. The rope can be caught by the wind, imposing excessive and unintended mechanical stress on the antenna and its mounting hardware, which can lead to misalignment, damage, or structural failure. Furthermore, a loose rope creates a snagging hazard for other equipment or personnel and, as it weathers and degrades from UV exposure, can become a falling object risk. All hoisting and rigging equipment must be completely removed from the tower and the installed components once the installation is complete.

Question 8

An El cable has a resistance of 75 ohm or 120 ohm. 75-ohm El cable are the same type with the RJ-45 LAN cable.

Accepted Answer

FALSE

Explanation: The statement is incorrect for two primary reasons. First, E1 interfaces that use 75-ohm impedance are specified for use with coaxial cables, typically terminated with BNC connectors. In contrast, standard LAN cables that use RJ-45 connectors are twisted-pair cables. Second, standard Ethernet LAN cables (like Category 5e/6) have a characteristic impedance of 100 ohms, not 75 ohms. While E1 interfaces can also use 120-ohm balanced twisted-pair cables (which may use RJ-45 connectors), the assertion that a 75-ohm E1 cable is the same type as an RJ-45 LAN cable is fundamentally incorrect due to differences in cable construction (coaxial vs. twisted-pair) and impedance (75 ohm vs. 100 ohm).

Question 9

How many points need to be grounded for an IF cable shorter than 60 meters?

Accepted Answer

C

Explanation: Huawei base-station site engineering rules state that an IF coaxial cable must be grounded at both ends and additionally every 20 m along its route. For a run that is < 60 m, the two end-points plus the points at 20 m and 40 m are required, giving a total of four grounding positions. This guarantees equipotential bonding, limits lightning-induced potentials and complies with Huawei’s lightning-protection acceptance criteria.

Question 10

Which of the following are requirements of operations in dangerous areas?

Accepted Answer

A, B, C

Explanation: A comprehensive safety protocol for operations in dangerous areas, as mandated by international occupational health and safety standards and vendor-specific guidelines, requires a multi-faceted approach. This includes administrative controls like formulating emergency and first-aid plans (A), engineering and physical controls such as placing warning signs and isolation barriers to secure the area (B), and the use of personal protective equipment (PPE) and professional tools to safeguard personnel (C). All three options represent distinct, mandatory, and critical safety requirements that must be implemented before and during work in hazardous environments.

Question 11

How many sites are involved in a one-hop microwave link?

Accepted Answer

B

Explanation: A one-hop microwave link, also known as a point-to-point link, is the most fundamental configuration in microwave transmission. It establishes a direct, line-of-sight communication path between a transmitting terminal and a receiving terminal. Each terminal is located at a distinct physical location, referred to as a site. Therefore, a single hop inherently requires two sites to form the complete communication segment. One site originates the signal, and the second site receives it.

Question 12

Which of the following are the specific rules for equipment layout?

Accepted Answer

A, C, D

Explanation: The specific rules for equipment layout in a professional environment like an equipment room or data center are guided by several core principles. These are: 1. Maintainability (A): The layout must provide sufficient and safe access for technicians to install, operate, maintain, and decommission equipment. 2. Space Utilization (C): The layout must make efficient use of the expensive, conditioned floor space, arranging equipment logically and compactly. 3. Clearances (D): The layout must adhere to specific minimum distances between equipment, and between equipment and walls. These clearances are critical not only for maintenance access but also for proper airflow for cooling and to meet safety regulations such as fire codes and emergency egress paths. These three principles are distinct, mandatory, and foundational to proper equipment room design.

Question 13

Which of the following is correct about operators undertaking special work (for example, constructors working at heights, electricians, and welders)?

Accepted Answer

C

Explanation: Operators undertaking special work, such as working at heights, electrical work, or welding, are exposed to high-risk environments. To ensure personnel safety and compliance with legal and industry standards, it is mandatory for these operators to complete specific safety technology training, successfully pass a formal appraisal or examination, and obtain a valid work certificate. This three-part requirement ensures that the individual possesses the theoretical knowledge, practical skills, and official authorization to perform the hazardous task safely. Experience alone does not supersede these formal qualification requirements, as standards and technologies evolve.

Question 14

What is the height of RTN 950 IDU? (lU=44.45mm)

Accepted Answer

B

Explanation: According to the official Huawei hardware description for the OptiX RTN 950, the Indoor Unit (IDU) chassis has a height of 88 mm. The standard rack unit (U) is defined as 44.45 mm. Therefore, the height of the RTN 950 IDU in rack units is calculated as 88 mm / 44.45 mm, which is approximately 2U. This physical dimension is a standard specification for this equipment model.

Question 15

Which of the following measures are effective to keep good heat dissipation for an IDU?

Accepted Answer

A, B, D

Explanation: Effective heat dissipation for an Indoor Unit (IDU) relies on maintaining adequate airflow. A. Installing an external fan on the cabinet door actively forces air circulation, significantly improving the removal of hot air from the cabinet. B. Reserving 1U of space above and below the IDU is a standard installation practice that facilitates natural convection, allowing hot air to rise and preventing heat transfer between adjacent devices. D. Opening the cabinet door provides maximum ventilation by allowing unrestricted exchange with the ambient room air, which is a highly effective, if sometimes temporary, method to prevent overheating.

Free Huawei H35-911 Actual Exam Questions