NCS NCSS 3G RA OaM 2 2 Practice Exam

NCS 20022201010 NCSS 3G RA OaM 2 2 Practice Exam
**Question 1.** Which component of a Nokia Node B is primarily responsible for
timing and synchronization with the RNC?

A) Power Amplifier

B) System Module

C) Transceiver Unit

D) Antenna Array

**Answer:** B

**Explanation:** The System Module contains the timing circuitry that
synchronizes the Node B with the Radio Network Controller (RNC) and provides
clock references to other modules.



**Question 2.** In the Flexi Node B product line, the transceiver units are
typically organized as:

A) One monolithic unit handling all sectors

B) Separate units per carrier and sector

C) Distributed across the antenna mast only

D) Integrated inside the power amplifier

**Answer:** B

**Explanation:** Flexi Node B uses modular transceiver units (TRX) that are
assigned per carrier and per sector, allowing flexible scaling.



**Question 3.** The boot‑up sequence of a Node B starts with loading the
**_____** partition, which contains the low‑level hardware drivers.

, NCS 20022201010 NCSS 3G RA OaM 2 2 Practice Exam
A) Application

B) Baseband

C) OS (Operating System)

D) Firmware (BOOT)

**Answer:** D

**Explanation:** The BOOT partition is loaded first; it initializes hardware and
launches the OS and higher‑level software partitions.



**Question 4.** Which antenna configuration is most suitable for implementing
sectorized coverage in a 3 G macrocell?

A) Omni‑directional antenna

B) Smart antenna with beamforming

C) Three 120° sector antennas

D) Dipole array with 90° beamwidth

**Answer:** C

**Explanation:** Traditional macrocell deployment uses three 120° sector
antennas to provide full 360° coverage with distinct sectors.



**Question 5.** The Iub interface between RNC and Node B traditionally uses
which transport protocol?

A) MPLS

B) ATM (Asynchronous Transfer Mode)

C) S1‑MME

, NCS 20022201010 NCSS 3G RA OaM 2 2 Practice Exam
D) LTE‑X2

**Answer:** B

**Explanation:** In legacy 3 G UTRAN, Iub is carried over ATM; newer
deployments may use IP/Ethernet, but ATM is the classic protocol.



**Question 6.** The NBAP protocol on the Iub link is used for:

A) User plane data transfer

B) Signalling for radio resource control

C) Encryption key exchange

D) Transport of alarm messages only

**Answer:** B

**Explanation:** NBAP (Node B Application Part) carries signalling messages for
radio resource management, configuration, and control between RNC and Node B.



**Question 7.** Which method is NOT a typical way to provide synchronization to
a Node B?

A) GPS disciplined oscillator

B) External 10 MHz reference from the transport network

C) Local crystal oscillator without disciplining

D) Synchronization over the Iub ATM path

**Answer:** C

**Explanation:** A free‑running crystal oscillator lacks the accuracy required for
tight WCDMA synchronization; disciplined sources are mandatory.

, NCS 20022201010 NCSS 3G RA OaM 2 2 Practice Exam


**Question 8.** During initial commissioning, the first step after physical
installation is to:

A) Perform a full software upgrade

B) Verify power supply voltage levels

C) Execute the RF drive test

D) Upload the cell configuration to the RNC

**Answer:** B

**Explanation:** Power verification ensures the Node B receives correct voltage
and current before any software or RF activities.



**Question 9.** In Nokia O&M tools, which application is primarily used for bulk
configuration changes across multiple Node Bs?

A) Element Manager (EM)

B) NetAct

C) Craft Terminal

D) OSS‑Web

**Answer:** B

**Explanation:** NetAct provides network‑wide configuration management, bulk
editing, and performance monitoring capabilities.



**Question 10.** The cell identity (CID) in a Node B is:

A) Unique across the entire network