MikroTik MTCWE Practice Exam

• A. 30-50 meters Correct answer
• B. 100-150 meters
• C. 200-250 meters
• D. 500-1000 meters

5 GHz signals have a shorter wavelength than 2.4 GHz, meaning they are absorbed more by walls and obstacles. A regular 5 GHz access point indoors typically reaches 30-50 metres, compared to 2.4 GHz which can reach 70 metres or more indoors.

• A. 100-150 meters
• B. 200-250 meters
• C. 500-1000 meters
• D. 1-2 kilometers Correct answer

Outdoors, 5 GHz signals travel further than indoors because there are fewer obstructions. Point-to-multipoint 5 GHz deployments can reach 1-2 kilometres with appropriate antennas, though typical consumer APs are rated for shorter distances.

• A. 50 meters
• B. 100 meters Correct answer
• C. 150 meters
• D. 200 meters

802.11b is the older 2.4 GHz standard released in 1999 with a maximum data rate of 11 Mbps. Its indoor range is typically up to 38 metres and outdoor range up to 140 metres, with 100 metres used as the standard exam reference for its maximum supported distance.

• A. To announce the presence of the access point and provide network information to clients Correct answer
• B. To authenticate clients and establish a secure connection
• C. To transmit data packets between clients and the access point
• D. To scan for available wireless networks in the area

Beacon frames are management frames broadcast periodically by an access point. They contain the SSID, supported data rates, security parameters, and timing information, allowing clients to discover and synchronise with the network.

• A. Wireless Sniffer Tool Correct answer
• B. Bandwidth Test Tool
• C. Ping Tool
• D. Traceroute Tool

The Wireless Sniffer Tool allows for detailed monitoring of wireless traffic, making it the best choice for identifying unauthorized access and analyzing network performance.

• A. Implementing Channel Bonding
• B. Conducting a Site Survey Correct answer
• C. Using Non-Overlapping Channels Correct answer
• D. Increasing Transmission Power

Conducting a site survey helps identify sources of interference and allows for better channel selection. Using non-overlapping channels minimizes interference between networks. Channel bonding and increasing transmission power can actually exacerbate interference issues.

• A. To request retransmission of lost packets
• B. To indicate successful transmission of a packet Correct answer
• C. To adjust the packet size threshold for using the RTS/CTS mechanism
• D. To adjust the duration of the CTS packet

ACK (Acknowledgement) frames confirm that a data frame was received successfully. Every unicast data frame in Wi-Fi requires an ACK from the receiver. If the sender does not receive an ACK within a timeout period it retransmits the frame.

• A. Utilizing channel bonding
• B. Implementing load balancing Correct answer
• C. Deploying multiple access points with proper placement Correct answer
• D. Using the same SSID for all access points

Implementing load balancing helps distribute client connections evenly across access points, enhancing performance. Proper placement of multiple access points ensures coverage and reduces interference, which is crucial in high-density environments. Channel bonding and using the same SSID without proper management can lead to performance issues.

• A. To reduce wireless interference Correct answer
• B. To increase wireless data rates
• C. To authenticate clients
• D. To establish a secure connection

RTS/CTS (Request to Send/Clear to Send) is a mechanism that reserves the wireless medium before transmitting large frames, reducing the likelihood of collisions (especially from hidden nodes). This reduces interference and wasted retransmissions.

• A. Increased coverage area Correct answer
• B. Reduced interference
• C. Improved signal strength Correct answer
• D. Lower energy consumption

Increasing transmission power enhances the coverage area, allowing the signal to reach further distances. Improved signal strength accompanies higher power, ensuring better connectivity. However, this does not guarantee reduced interference or lower energy consumption.

• A. To increase wireless range
• B. To improve wireless signal quality
• C. To increase wireless data rates Correct answer
• D. To reduce wireless interference

Channel bonding combines two adjacent wireless channels into one wider channel, doubling the available bandwidth. A 20 MHz channel becomes 40 MHz (used in 802.11n), or 80/160 MHz in 802.11ac, which directly increases the maximum data throughput.

• A. MIMO Correct answer
• B. WEP
• C. Channel bonding Correct answer
• D. MAC filtering

MIMO (Multiple Input Multiple Output) allows for multiple data streams, increasing throughput, while channel bonding combines two channels to double the bandwidth, reducing interference. WEP is an outdated security protocol, and MAC filtering does not enhance throughput.

• A. WEP
• B. WPA
• C. WPA2 Correct answer

Among the listed options, WPA2 is the most secure. WEP is broken and WPA is deprecated. WPA3 is newer and stronger but is not listed as an option here, making WPA2 the correct answer.

• A. True
• B. False Correct answer

Using an open wireless network poses significant security risks and is not acceptable in a corporate environment where secure connections are essential.

• A. Use the same channel for all devices
• B. Select non-overlapping channels for adjacent nodes Correct answer
• C. Randomly assign channels for variability
• D. Only use 2.4 GHz channels for all nodes

Selecting non-overlapping channels for adjacent nodes minimizes interference, which optimizes performance in a mesh network by ensuring that devices can communicate without disrupting each other.

• A. True Correct answer
• B. False

Each hop in a WDS network retransmits the data, which can add latency and reduce throughput, making it essential to limit the number of hops for optimal performance.

• A. Bridge mode Correct answer
• B. Router mode
• C. Client mode
• D. Access point mode

Bridge mode is the primary mode used for connecting two networks wirelessly, allowing communication between them without routing.

• A. True Correct answer
• B. False

Using the same SSID on both ends of a wireless bridge ensures that devices can connect seamlessly without needing to switch networks.

• A. By configuring the wireless interface to use Nstreme Correct answer
• B. By updating the router's firmware
• C. By changing the router's IP address
• D. By resetting the device to factory settings

To enable Nstreme, an administrator must configure the wireless interface specifically to use the Nstreme protocol, making option A the correct choice.

• A. Wi-Fi
• B. Bluetooth
• C. Zigbee
• D. WiMAX Correct answer

WiMAX (IEEE 802.16) uses Time Division Duplex (TDD) to share the wireless medium, alternating between upstream and downstream transmissions in time slots. Wi-Fi uses CSMA/CA, Bluetooth uses TDD too but is not a WAN technology like WiMAX.