View Full CWNP CWDP-305 Exam Dumps and Practice Test Dumps

 

Question 21.

Which factor is most important when estimating WLAN client density?

1. Expected user population
2. Switch hostname
3. DNS record count
4. Printer queue length

Correct Answer: 1

Explanation:

Expected user population is a key input when estimating wireless client density because the number of simultaneously active devices directly influences airtime demand. A design intended for a small office may require very different access-point density from a conference area, classroom, or stadium section. Designers should consider both the number of devices and how actively those devices will use the network. Switch hostnames, DNS records, and printer queues do not directly determine RF client density. Accurate density estimates help establish suitable access-point placement and capacity requirements.

Question 22.

What does channel utilization primarily indicate?

1. Antenna alignment
2. Airtime occupancy
3. Cable impedance
4. IP address usage

Correct Answer: 2

Explanation:

Channel utilization indicates how much of the available wireless airtime is occupied by transmissions or detected activity. High utilization can indicate a busy RF environment and may reduce opportunities for devices to transmit efficiently. It is therefore useful when evaluating capacity, interference, and congestion in a WLAN. Antenna alignment, cable impedance, and IP addressing describe different aspects of network operation. A channel with strong signal levels can still provide poor performance if excessive activity consumes available airtime.

Question 23.

Why is 5 GHz often useful for dense WLAN deployments?

1. Longer wavelength
2. Greater wall penetration
3. More channel availability
4. Fewer supported clients

Correct Answer: 3

Explanation:

The 5 GHz band can provide additional channel options compared with traditional 2.4 GHz deployments, making it useful for environments where many wireless cells must share spectrum. More available channels can support better frequency reuse and reduce the need for numerous neighboring cells to operate on the same channel. Actual availability depends on regulatory domain, channel width, DFS requirements, and equipment capabilities. Longer wavelength and stronger wall penetration are associated more closely with lower-frequency operation, while fewer supported clients is not an inherent advantage.

Question 24.

Which characteristic generally distinguishes 2.4 GHz from 5 GHz propagation?

1. Wider channels
2. More spatial streams
3. Higher antenna gain
4. Longer propagation range

Correct Answer: 4

Explanation:

Lower-frequency 2.4 GHz signals generally propagate farther and tend to penetrate common building materials more effectively than higher-frequency 5 GHz signals under comparable conditions. This can make 2.4 GHz useful for broader basic coverage, although the band has fewer non-overlapping channels and can become congested. Channel width, spatial-stream capability, and antenna gain are separate characteristics that are not determined solely by the frequency band. WLAN designers therefore need to balance propagation behavior with spectrum availability and capacity requirements.

Question 25.

What is the main purpose of a capacity-oriented WLAN design?

1. Support expected traffic demand
2. Reduce cable labeling
3. Simplify DNS administration
4. Increase switch ports

Correct Answer: 1

Explanation:

A capacity-oriented WLAN design focuses on supporting the expected amount of traffic and airtime demand rather than simply providing basic signal coverage. Designers consider client counts, application types, traffic rates, contention, channel availability, and access-point capabilities. A network can show acceptable signal strength while still performing poorly when too many clients compete for limited airtime. Cable labeling, DNS administration, and switch-port quantity are important infrastructure considerations but do not define the wireless capacity model. Capacity planning therefore complements coverage planning.

Question 26.

Which application characteristic can strongly influence WLAN capacity requirements?

1. User password length
2. Traffic intensity
3. Device hostname
4. VLAN description

Correct Answer: 2

Explanation:

Traffic intensity describes how much network activity an application generates and how frequently it uses the wireless medium. Applications such as high-resolution video, voice, collaboration tools, and large file transfers can create substantially different airtime requirements. Capacity planning should therefore account for application behavior rather than assuming every connected client creates the same load. Password length, device naming, and VLAN descriptions are configuration details that do not directly establish application traffic demand. Understanding traffic intensity helps determine whether additional RF capacity is required.

Question 27.

What does a cell-edge design threshold define?

1. Maximum switch temperature
2. Minimum cable length
3. Required performance boundary
4. DHCP allocation limit

Correct Answer: 3

Explanation:

A cell-edge threshold establishes the minimum RF or performance condition expected at the boundary of a wireless coverage area. Designers can use parameters such as minimum received signal, SNR, or required data rate to define where acceptable service should end. Establishing a clear boundary helps determine access-point spacing and identify coverage gaps. Switch temperature, cable length, and DHCP allocation limits do not define an RF cell boundary. Cell-edge requirements should reflect the applications and client behaviors that the WLAN is expected to support.

Question 28.

Which technology allows multiple antennas to improve wireless throughput?

1. NAT
2. MIMO
3. STP
4. ARP

Correct Answer: 2

Explanation:

Multiple-Input Multiple-Output, or MIMO, uses multiple transmit and receive antennas to improve wireless communication performance through spatial techniques. Depending on the wireless standard and environment, MIMO can support multiple spatial streams and increase achievable throughput or reliability. Its effectiveness depends on client capability, RF conditions, antenna configuration, and other protocol factors. NAT, STP, and ARP are networking technologies operating at other layers or functions and do not provide the same multi-antenna RF capability.

Question 29.

Which environmental condition can increase wireless attenuation?

1. Open doorway
2. Clear air
3. Concrete wall
4. Empty hallway

Correct Answer: 3

Explanation:

Concrete walls can introduce substantial attenuation because dense construction materials absorb and otherwise impede RF energy. The amount of loss varies with material composition, thickness, moisture, reinforcement, and operating frequency. During predictive and onsite surveys, designers should identify significant structural barriers and account for their effects on expected signal levels. An open doorway generally presents less obstruction than a solid wall, while clear air and an empty hallway typically introduce much less attenuation than dense construction materials. Building composition is therefore an essential RF design input.

Question 30.

What is the primary purpose of a spectrum analyzer during WLAN troubleshooting?

1. Examine RF activity
2. Configure DHCP scopes
3. Verify DNS records
4. Manage user accounts

Correct Answer: 1

Explanation:

A spectrum analyzer examines radio-frequency energy across a frequency range and can reveal activity that may not appear as normal Wi-Fi traffic. This makes it useful for identifying non-Wi-Fi interference, unexpected transmitters, persistent RF sources, and other spectrum conditions. Traditional WLAN protocol analysis focuses on wireless frames and network behavior, whereas spectrum analysis provides visibility into the broader RF environment. DHCP scopes, DNS records, and user accounts are unrelated administrative functions. Spectrum analysis can therefore complement packet-level WLAN troubleshooting.

Question 31.

What does receiver sensitivity specify?

1. Maximum antenna height
2. Minimum usable signal
3. Highest channel number
4. Maximum frame size

Correct Answer: 2

Explanation:

Receiver sensitivity identifies the minimum signal level at which a receiver can successfully demodulate and decode a signal under specified conditions. Sensitivity values are typically associated with particular modulation and coding configurations, so a receiver may have different sensitivity requirements at different data rates. Better sensitivity can allow communication at lower received signal levels, although real-world performance also depends on noise, interference, multipath, and protocol behavior. Antenna height, channel numbering, and frame size describe other wireless or networking characteristics.

Question 32.

Which WLAN feature allows a client to use multiple frequency bands?

1. VLAN trunking
2. Band steering
3. Port aggregation
4. Route summarization

Correct Answer: 2

Explanation:

Band steering is a WLAN management technique that can encourage capable clients toward a preferred frequency band, commonly helping distribute devices between 2.4 GHz and 5 GHz networks. The exact implementation varies among vendors and may use client behavior, probe responses, association handling, or other mechanisms. Band steering does not force every client to support both bands; client capabilities still determine what frequencies can be used. VLAN trunking, port aggregation, and route summarization are wired or Layer 3 networking functions rather than RF client-distribution mechanisms.

Question 33.

What should be considered when choosing channel width in a dense WLAN?

1. Spectrum availability
2. Keyboard layout
3. Printer model
4. User directory size

Correct Answer: 1

Explanation:

Spectrum availability is an important consideration when selecting channel width because wider channels consume more contiguous or bonded spectrum. Although wider channels can provide higher theoretical data rates, they may reduce the number of channels available for frequency reuse and increase the potential for contention in dense environments. Designers must therefore balance throughput requirements against spectrum efficiency. Keyboard layouts, printer models, and directory sizes do not directly influence RF channel-width planning. A capacity-focused WLAN often benefits from selecting channel widths based on actual environmental and traffic requirements.

Question 34.

What does a wireless client’s data rate primarily describe?

1. Authentication method
2. Transmission rate
3. IP lease duration
4. Gateway address

Correct Answer: 2

Explanation:

A wireless data rate represents the rate at which information can be transmitted over the RF link under a particular modulation, coding, channel configuration, and spatial-stream condition. It should not automatically be interpreted as application throughput because protocol overhead, contention, retransmissions, and other factors reduce usable throughput. Authentication methods, IP lease duration, and gateway addressing belong to different network functions. Understanding data rates helps designers evaluate coverage boundaries and determine whether clients can support the performance levels required by specific applications.

Question 35.

Which factor can cause a client to select a lower data rate?

1. Stronger encryption
2. Longer SSID
3. Weaker received signal
4. Larger DHCP pool

Correct Answer: 3

Explanation:

A weaker received signal can cause a wireless client to select a more robust but lower data rate. Modern WLAN systems use rate adaptation to adjust modulation and coding according to changing RF conditions. As signal quality declines or errors increase, the client and access point may move toward configurations that require less favorable channel conditions. Encryption strength, SSID length, and DHCP pool size do not directly determine the selected PHY data rate. Proper WLAN design therefore considers minimum acceptable signal and SNR levels for required application performance.

Question 36.

Which measurement is useful for evaluating packet retransmission behavior?

1. Channel number
2. Retry count
3. Antenna connector
4. DHCP scope

Correct Answer: 2

Explanation:

Retry count indicates how often wireless frames require retransmission after unsuccessful delivery or acknowledgment. Elevated retry activity can indicate interference, weak signal conditions, collisions, hidden-node effects, or other RF and protocol problems. High retries consume additional airtime and can reduce effective throughput even when nominal data rates appear high. Channel number identifies the operating frequency, antenna connectors describe physical interfaces, and DHCP scopes manage address allocation. Examining retries alongside signal and noise measurements provides a more complete view of WLAN performance.

Question 37.

What is the hidden-node problem associated with?

1. Clients outside mutual detection
2. Incorrect DNS entries
3. Duplicate IP addresses
4. Excessive switch memory

Correct Answer: 1

Explanation:

The hidden-node problem occurs when wireless clients cannot detect one another even though both can communicate with the same access point. Because each client may believe the channel is available, their transmissions can interfere at the access point. This can increase collisions, retransmissions, and airtime consumption. Physical layout, attenuation, obstacles, and cell design can contribute to hidden-node conditions. DNS entries, IP duplication, and switch memory are not the underlying cause. Careful cell planning and RF analysis can help identify environments where hidden nodes may occur.

Question 38.

Why can excessive AP density reduce WLAN performance?

1. More DNS traffic
2. Increased channel contention
3. Smaller IP addresses
4. Longer Ethernet frames

Correct Answer: 2

Explanation:

Excessive access-point density can increase the number of neighboring cells competing for shared spectrum. When many APs operate within overlapping coverage areas, clients may detect more transmissions and spend more time contending for airtime. If channel reuse is poorly planned, co-channel activity can become especially significant. Adding APs does not automatically increase capacity because each additional radio must share finite spectrum. DNS traffic, IP addressing, and Ethernet frame length are not the primary RF mechanisms responsible for this effect.

Question 39.

Which antenna type is commonly suited to broad indoor coverage?

1. Parabolic dish
2. Yagi array
3. Omnidirectional antenna
4. Horn radiator

Correct Answer: 3

Explanation:

Omnidirectional antennas are commonly used for broad horizontal coverage around an access point, making them suitable for many indoor WLAN deployments. Their actual radiation pattern is not perfectly uniform and varies with antenna design, mounting orientation, nearby structures, and the surrounding environment. Highly directional antennas such as parabolic dishes and many Yagi or horn designs are more commonly used when energy must be concentrated toward a particular direction. Antenna selection should therefore reflect the intended coverage geometry and physical deployment environment.

Question 40.

What is the primary role of a directional antenna?

1. Focus RF energy
2. Assign client addresses
3. Increase VLAN count
4. Encrypt management frames

Correct Answer: 1

Explanation:

A directional antenna concentrates RF energy within a particular direction or angular region rather than distributing it broadly around the antenna. This characteristic can be useful for point-to-point links, targeted coverage, outdoor bridges, or environments where unwanted RF exposure should be limited. Directional antennas can provide higher gain in the intended direction, but their narrower coverage requires careful positioning and alignment. Client addressing, VLAN creation, and frame encryption are network functions unrelated to the fundamental purpose of directional antenna design.