# Vodafone Training April 2018 || Technical Quiz

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| By Fatma.gomaaa
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Fatma.gomaaa
Community Contributor
Quizzes Created: 1 | Total Attempts: 69
Questions: 11 | Attempts: 69

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The test opens Friday from 10 pm to 11.59 pm, but before entering the test you need to know the following: you need to prepare a paper and a pen as you’ll draw some questions, you can use software tools if you don't want to use paper and pen. you need to have something to capture your answer as you'll upload it. the test takes 20 minutes only including your handwriting and uploading file time. After the test, you will be asked to fill a required online assessment.

• 1.

• 2.

• 3.

### Channel Bandwidth of GSM

• A.

200 Khz

• B.

5 Mhz

• C.

200 Mhz

A. 200 Khz
Explanation
The correct answer is 200 Khz because GSM (Global System for Mobile Communications) uses a channel bandwidth of 200 Khz. This bandwidth is divided into time slots to accommodate multiple users within the same frequency range. By using a narrow bandwidth, GSM can support a large number of users simultaneously.

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• 4.

### Channel bandwidth of UMTS

• A.

200 Khz

• B.

5 Mhz

• C.

200 Mhz

B. 5 Mhz
Explanation
The correct answer is 5 MHz. In UMTS (Universal Mobile Telecommunications System), the channel bandwidth is 5 MHz. This means that the frequency range allocated for UMTS transmission is 5 MHz wide. This allows for a larger amount of data to be transmitted simultaneously, resulting in faster and more efficient communication.

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• 5.

### Channel Bandwidth of 1 resource Block in LTE

• A.

180 Khz

• B.

5 Mhz

• C.

200 Khz

A. 180 Khz
Explanation
The channel bandwidth of 1 resource block in LTE is 180 kHz. This means that each resource block in LTE has a bandwidth of 180 kHz, which allows for the transmission of data. The resource block is the basic unit of allocation in LTE and is used to divide the available spectrum into smaller chunks for efficient communication.

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• 6.

### The uplink Bandwidth of GSM ranges from

• A.

890 to 915

• B.

935 to 960

• C.

2100 to 2125

A. 890 to 915
Explanation
The uplink bandwidth of GSM ranges from 890 to 915. This means that the frequency range used for transmitting data from a mobile device to the base station falls between 890 MHz and 915 MHz. This range is reserved specifically for uplink communication in GSM networks.

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• 7.

### Date Rate of UMTS

• A.

2MBPS

• B.

9.06KBPS

• C.

100MBPS

A. 2MBPS
Explanation
The correct answer is 2MBPS. This is the data rate of UMTS, which stands for Universal Mobile Telecommunications System. UMTS is a third-generation mobile communication technology that provides high-speed data transmission. The data rate of 2MBPS means that UMTS can transmit data at a speed of 2 megabits per second. This allows for faster internet browsing, video streaming, and downloading/uploading files on mobile devices.

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• 8.

• A.

Lα 1/f

• B.

Lα f

• C.

L=f+1

A. Lα 1/f
• 9.

### Using the same group of frequencies in 2 different cells cause

• A.

Co-channel interference

• B.

• C.

White Gaussian noise

A. Co-channel interference
Explanation
Using the same group of frequencies in 2 different cells causes co-channel interference. This means that when two cells in a cellular network use the same frequency to transmit and receive signals, there is a potential for interference between the two cells. This interference can result in degraded signal quality, dropped calls, and decreased overall network performance. To minimize co-channel interference, cellular networks utilize techniques such as frequency reuse and cell planning to allocate different frequencies to neighboring cells.

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• 10.

### The node used for connectivity and charging in GSM is:

• A.

MSC

• B.

BSC

• C.

BTS

• D.

Option 4

A. MSC
Explanation
The correct answer is MSC (Mobile Switching Center). MSC is responsible for the switching of calls and the management of mobile subscribers in a GSM network. It acts as the central hub for connecting mobile devices to the rest of the telecommunications network. It also handles tasks such as call routing, authentication, and billing. MSCs are typically connected to other network elements such as BSCs (Base Station Controllers) and BTSs (Base Transceiver Stations) to ensure seamless connectivity and charging for GSM users.

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• 11.

### The node used for connectivity with other network and charging in GSM is

• A.

MSC

• B.

MSCS

• C.

GMSC

C. GMSC
Explanation
The GMSC (Gateway Mobile Switching Center) is the node used for connectivity with other networks and charging in GSM. It acts as the interface between the GSM network and external networks, such as PSTN (Public Switched Telephone Network) or ISDN (Integrated Services Digital Network). The GMSC is responsible for routing incoming and outgoing calls, as well as performing call setup and teardown functions. Additionally, it handles charging and billing for the calls made through the GSM network.

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• 12.

### The list for faulty or non-type approved handsets in EIR is

• A.

Black

• B.

Grey

• C.

White

B. Grey
Explanation
The correct answer is "grey". This is because the question is asking for the color of the handset that is listed as faulty or non-type approved in the EIR (Equipment Identity Register). The given options are "black", "grey", and "white", and out of these options, "grey" is the one that matches the criteria mentioned in the question.

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• 13.

### The only generation who has different access technique in uplink and downlink is

• A.

GSM

• B.

UMTS

• C.

LTE

C. LTE
Explanation
LTE (Long-Term Evolution) is the correct answer because it is the only generation among the options that uses different access techniques in the uplink and downlink. In LTE, the uplink uses a technique called SC-FDMA (Single Carrier Frequency Division Multiple Access) while the downlink uses OFDMA (Orthogonal Frequency Division Multiple Access). This difference in access techniques allows for better efficiency and capacity in both directions of communication. GSM and UMTS, on the other hand, use the same access technique (FDMA and CDMA respectively) for both uplink and downlink.

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