MSC-121の無料問題集（112題）、MSC-121認定試験参考書

Motorola Solutions MSC-121 問題集

試験コード：MSC-121

試験名称：Design WLan Solutions

最近更新時間：2025-01-16

問題と解答：全112問

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質問 1：
You are conducting interviews with the management team of a new potential customer; a multi-floor medical center located in a multi-tenant office building of a popular suburban business park. To begin, the management team expects to have approximately 100 simultaneous wireless users throughout the medical center using a variety of mission-critical applications, including high performance data for transferring large MRI scans to the handsets of medical personnel, VoWLAN handsets, Push-to-talk (PIT) voice badges, and Real-time Locationing Services (RTLS) mounted on infusion pumps and bio monitor carts. In addition, a separate, publicly accessible Visitor WLAN will offer "best effort" data access for web browsing and limited printing throughout the complex. Over the upcoming months and years, many more users are expected to be added to the WLAN.
Due to the number of users, the variety of the applications, the requirements for QoS and the need for security, you will be recommending an RFS Controller-based solution using dual-band, triple radio 802.11n APs. Which of the following solutions would best solve the many requirements of this customer?
A. Assign high performance MRI data, VoWLAN, PIT, and RTLS users to the 2.4 GHz band and Visitors WLAN to the 5 GHz band and keep the third radio in reserve for future use.
B. Assign Visitors WLAN, PIT, and RTLS users to the 2.4 GHz band. Assign VoWLAN and high performance MRI data users to the 5 GHz band and assign the third radio as a dedicated VVIPS sensor.
C. Assign PTT and RTLS users to the 5 GHz band. Assign VoWLAN and high performance MRI data users to the 2.4 GHz band. Assign the Visitors WLAN to the third radio configured for the 2.4 GHz band.
D. Assign RTLS and Visitor's WLAN to the 2.4 GHz radio, VoWLAN and PTT to the 5 GHz radio, and high performance MRI data to the third radio configured for the 900 MHz band.
正解：B

質問 2：
In radio frequency transmission the term Modulation Coding Scheme (MCS) is defined by which of the following?
A. The use of an encryption algorithm to securely code a modulated signal before transmission.
B. A multiplexing technique that uses orthogonal codes in place of X.509 digital certificates for message validation.
C. The combination of digital modulation method and a forward error correction mechanism.
D. A set of AES/CCMP cipher modes which assure integrity of an OFDM transmission.
正解：C

質問 3：
Your customer has a requirement that the APs used in the design be capable of accepting Gigabit Ethernet connections. Which of the following APs does NOT meet this requirement?
A. AP650
B. AP6532
C. AP6511
D. AP7131
正解：C

質問 4：
You are designing a channel plan for four (4) co-located U-NII-1 APs that will be in relatively close (RSSI -85 dBm) proximity to each other. Which of the following channel plans will allow for the BEST 802.11n performance due to better signal isolation between APs, if they are mounted down from the tiles in a straight line across the ceiling? As needed, please use the exhibit at the bottom.

A. 36+, 44+
B. 44+, 48
C. 48-, 44
D. 36-, 48+
E. 36+, 40+
正解：A

質問 5：
You are designing a WLAN for a new customer and have been given a Customer Checklist for WLAN.
Given this checklist, please answer the test item(s) below.

What is a characteristic of this deployment that could significantly impact the number of APs required to provide the needed area coverage? Assume only the information in the Customer Checklist WLAN exhibit at the bottom.
A. Construction Material
B. Potential Equipment placement locations
C. Service desired by the customer
D. Email Environment
正解：A

質問 6：
After preparing a LAN Planner predictive site survey to visualize data rate coverage for an upgrade to an existing 802.11b/g WLAN, you are informed that the customer will also need to continue to provide support for 802.11b bar code scanners throughout the facility. Using LANPlanner, you predict that with the current placement of APs, a maximum 802.llg data rate of 18 Mbps will be available in the locations indicated by arrows on the heatmap shown in Exhibit A.4.2.01 at the bottom. This is due to dense wall construction materials and low AP output power settings. Using the raw values shown in Chart A in the exhibit, and ignoring any additional fade margins or fudge factors, what would be the maximum, possible 802.11b connection rate at the indicated locations?

A. 1 Mbps
B. 5.5 Mbps
C. 11Mbps
D. 6 Mbps
E. 2 Mbps
正解：E

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Motorola Solutions Design WLan Solutions 認定 MSC-121 試験問題:

1. You are performing a site survey for a law firm in a multi-tenant, multistory building. The firm uses VOIP wireless phones and they plan to implement an 802.11g network. Since you are concerned about latency, you associate an 802.11g client with an 802.11g access point and then use a wireless protocol analyzer to capture wireless traffic on the 2.4 GHz channels. Among the expected management, control, and data frames displayed by the protocol analyzer you notice numerous CTS frames. Which of the following best explains what the presence of CTS frames on an 802.11g network indicates?

A) That there is a wireless intrusion detection system in the building
B) The presence of other VOIP phone systems in the area
C) The presence of 802.11b devices
D) That you will have no problem with the VOIP phones

2. A WLAN customer has identified the need for voice traffic as a key requirement. Which one of the following configuration options should be part of your design and is considered a best practice?

A) Set the D71M to less than 3.
B) Do not use more than three ESSID's on each Access Point.
C) Use only the same model of Access Points throughout the facility.
D) Place all wireless traffic on the same VLAN.

3. You are designing a WLAN for a golf course design firm. At the conclusion of the assessment of the physical context of the proposed WLAN, it becomes apparent that there are many WLANs in the eight story building in which the company is located. One of the LAN administrators says he has heard that "hiding" the SSID will stop hackers from finding the VVLAN. Which of the following best describes the results of "SSID Hiding"?

A) Not broadcasting the SSID makes it more difficult for clients properly configured with the SSID to authenticate.
B) Not responding to null SSIDs causes the EAP process to break down.
C) The SSID can still be seen with a wireless protocol analyzer.
D) These values must be present in order for intrusion detection systems to function.

4. You have just shown your assistant that increasing the number of simultaneous clients connected to the same access point has a significant negative impact on data throughput. Which of the following items, in addition to this would have a similar effect on data throughput?

A) Changing from an 802.11/b/g network to 802.11g only
B) The presence of 802.11g clients in an 802.11 b network
C) Antenna height of the access point
D) The presence of an 802.11b client on an 802.11 g WLAN

5. You are designing a WLAN for a new customer and have been given a Customer Checklist for WLAN.
Given this checklist, please answer the test item(s) below.

Based on the data provided in the Customer Checklist for WLAN, select the most cost effective equipment for this deployment?