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IT Certifications · 350-101 WLCOR

Cisco Implementing and Operating Cisco Wireless Core Technologies Exam Practice Test

Wireless core engineering connects radio-frequency behavior, WLAN configuration, client authentication, and network operations. Practice topics include enterprise Wi-Fi security, 2.4 GHz channel planning, co-channel interference, antenna gain, minimum data rates, and interpreting wireless frames and client connection events.

Exam overview

Exam providerCisco
Exam code350-101 WLCOR
CategoryIT Certifications

About the Cisco Implementing and Operating Cisco Wireless Core Technologies Exam

Wireless troubleshooting requires correlating what a client reports with evidence from access points, controllers, authentication services, and over-the-air traffic. Frame-level inspection can help distinguish association or authentication failures from interference and data-exchange problems. RF decisions also involve balancing channel reuse, channel width, coverage, and capacity: overlapping transmissions can reduce airtime, while antenna gain and minimum data rates affect coverage and client behavior. For secured WLANs, 802.1X commonly uses EAP between the client and access point, with RADIUS carrying authentication exchanges onward; individual credentials and separate guest policies help limit access risk. Engineers use these concepts to investigate disconnects, choose channel and rate settings, verify secure access, and separate guest connectivity from corporate resources.

Sample Practice Questions

Review a selection from this exam's published US Practice Tests practice bank.

Question 1

What is the main security benefit of using WPA2-Enterprise or WPA3-Enterprise with 802.1X?

  1. AIt supports per-user or per-device authentication through an authentication server
  2. BIt makes the wireless network invisible to unauthorized scanners
  3. CIt removes the need for encryption over the air
  4. DIt guarantees that every client uses a unique radio channel
Show answerCorrect answer: A

Enterprise authentication uses 802.1X and typically a RADIUS server to authenticate users or devices, with encryption protecting wireless traffic. It does not hide the network, eliminate encryption, or assign a unique channel to each client.

Question 2

When troubleshooting a wireless client that repeatedly loses its connection, which evidence is most useful for correlating the client’s experience with network events?

  1. AController and access point logs showing association, authentication, and disconnection events with timestamps.
  2. BThe color of the access point’s housing.
  3. CThe client’s screen resolution.
  4. DA list of unrelated DNS records from another subnet.
Show answerCorrect answer: A

Timestamped controller and access point events can show whether disconnects coincide with authentication failures, signal-related events, or other network conditions. The other information does not help establish the wireless connection timeline.

Question 3

Why should an engineer consider co-channel interference when placing access points that use the same channel?

  1. ADevices sharing a channel may need to contend for airtime, reducing available capacity
  2. BThe access points automatically merge their SSIDs into one security domain
  3. CThe channel becomes unavailable for client transmissions
  4. DThe access points are forced to use different IP subnets
Show answerCorrect answer: A

Access points and clients on the same channel share the radio medium and must coordinate access to airtime. Excessive co-channel contention can reduce throughput and increase delay, even when the devices are not transmitting at the same moment.

Question 4

What is the primary function of an access point's antenna gain specification?

  1. AIt describes how the antenna concentrates radio energy in particular directions relative to a reference antenna
  2. BIt specifies the number of clients the access point can authenticate
  3. CIt defines the maximum Ethernet frame size supported by the access point
  4. DIt measures the encryption strength of the WLAN
Show answerCorrect answer: A

Antenna gain characterizes how an antenna shapes and concentrates transmitted or received energy compared with a reference. It is a radio-frequency property, not a measure of client capacity, frame size, or security strength.

Question 5

Why are non-overlapping 20 MHz channels commonly preferred in a dense 2.4 GHz Wi-Fi deployment?

  1. AThey reduce adjacent-channel interference and allow more independent channel reuse
  2. BThey increase the transmit power of every client automatically
  3. CThey ensure that all clients use 5 GHz radios
  4. DThey eliminate the need for access point placement planning
Show answerCorrect answer: A

Using non-overlapping 20 MHz channels helps limit adjacent-channel interference and supports reuse across nearby access points. Channel planning remains necessary, and channel width does not change client band capability or automatically increase transmit power.

Question 6

An engineer needs to verify that a client is successfully exchanging frames with an access point over the air. Which tool is most directly suited to inspecting frame-level wireless activity?

  1. AA packet capture using a monitor-mode wireless adapter
  2. BA DNS lookup from the client
  3. CA controller configuration backup
  4. DA wired switch port utilization report
Show answerCorrect answer: A

A monitor-mode wireless capture can observe 802.11 management, control, and data frames on the selected channel, helping investigate over-the-air exchanges. It may require suitable hardware, channel selection, and appropriate handling of encrypted payloads.

Question 7

Why might an administrator configure a minimum data rate on a WLAN?

  1. ATo discourage very low-rate connections that consume disproportionate airtime and can reduce cell efficiency.
  2. BTo force every client to use the same IP address.
  3. CTo increase the maximum transmit power of all nearby access points.
  4. DTo prevent clients from using encryption.
Show answerCorrect answer: A

A minimum data-rate policy can remove support for low legacy rates, which may improve airtime efficiency and encourage clients to use more suitable access points. It does not affect IP addressing, transmit-power limits, or encryption.

How to use this practice test

Access is free. A practice session presents up to 20 random questions from the 50-question bank and shows results afterward. Use each result to identify which wireless concepts need another pass, such as 802.1X authentication, RF channel reuse, or interpreting client and frame-level evidence.

Preparation tips

  • Compare WPA2-Enterprise and WPA3-Enterprise authentication flows, including the roles of 802.1X, EAP, and RADIUS.
  • Sketch a dense 2.4 GHz deployment and reason through non-overlapping 20 MHz channels, co-channel interference, and access point placement.
  • Practice matching disconnect symptoms to useful evidence, including client event records and over-the-air frame captures.
  • Review how antenna gain and minimum data-rate settings can change coverage, cell boundaries, and client connectivity.
  • Distinguish guest WLAN policies from corporate access, and consider how individual 802.1X credentials can be revoked when a user leaves.
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