4G Network Architecture — Test 1

Correct Answer: D. D. Suitable cell
Explanation: A suitable cell is a cell on which the UE may camp on to obtain normal service. The UE shall have a valid USIM and such a cell shall fulfil all the following requirements. It provides the best level of service for average subscribers.

Correct Answer: B. B. 140
Explanation: There are two different type of Cyclic Prefix. One is normal Cyclic Prefix and the other is ‘Extended Cyclic Prefix’ which is longer than the Normal Cyclic Prefix. Normal cyclic prefix contains 140 symbols in 1 frame.

Correct Answer: B. B. Physical cell id
Explanation: The PBCH is scrambled prior to modulation with a cell-specific sequence that depends on the cells’ identity. In contrast to the synchronization signals, the PBCH is transmitted on the 72 reserved subcarriers, which are QPSK-modulated.

Correct Answer: C. C. 72
Explanation: PDCCH is a physical channel that carries downlink control information (DCI). Shortest possible PDCCH is 72 bits.

Correct Answer: D. D. 2-5 Mbps
Explanation: Verizon 4G LTE wireless broadband is 10 times faster than 3G able to handle download speeds between 5 and 12 Mbps (Megabits per second) and upload speeds between 2 and 5 Mbps.

Correct Answer: A. A. Multirate management
Explanation: 4G is the fourth generation of broadband cellular network technology, succeeding 3G. Its characteristics include fully converged services, software dependency and diverse user devices.

Correct Answer: A. A. Serving gprs support node
Explanation: The Serving GPRS Support Node (SGSN) is a main component of the GPRS network, which handles all packet switched data within the network, e.g. the mobility management and authentication of the users. The SGSN performs the same functions as the MSC for voice traffic.

Correct Answer: A. A. Concatenated location registration
Explanation: 4G supports concatenated location registration. Concatenated location registration reports to the network that they are concatenated to a common object.

Correct Answer: A. A. Verizon wireless
Explanation: In 2007, Verizon announced plans to develop and deploy its fourth generation mobile broadband network using LTE, the technology developed within the Third Generation Partnership Project (3GPP) standards organization.

Correct Answer: C. C. Mac
Explanation: Hybrid automatic repeat request (hybrid ARQ or HARQ) is a combination of high-rate forward error-correcting coding and ARQ error-control. It is part of the MAC layer.