CCNA 200-301 Q&A: Which 802.11 management frame type is sent when a client roams between access points on the same SSID?

Question

Which 802.11 management frame type is sent when a client roams between access points on the same SSID?

A. Reassociation Request
B. Authentication Request
C. Association Request
D. Probe Request

Answer

A. Reassociation Request

Explanation 1

The answer is A, Reassociation Request.

A Reassociation Request frame is sent when a client roams between access points on the same SSID. It is used to inform the new access point of the client’s MAC address, the old access point’s BSSID, and the channel that the client is currently using.

Here are some additional details about Reassociation Request frames:

The Reassociation Request frame is a type of 802.11 management frame.
It is used to inform the new access point of the client’s MAC address, the old access point’s BSSID, and the channel that the client is currently using.
The Reassociation Request frame is sent after the client has successfully authenticated with the new access point.

The other options are incorrect:

Option B: An Authentication Request frame is used to authenticate a client to an access point. It is not used when a client roams between access points.
Option C: An Association Request frame is used to associate a client to an access point. It is not used when a client roams between access points.
Option D: A Probe Request frame is used to scan for available wireless networks. It is not used when a client roams between access points.

Explanation 2

The correct answer is A. Reassociation Request.

When a client roams between access points on the same SSID, it needs to inform the new access point of its presence and establish a connection with it. To do this, the client sends a Reassociation Request frame to the new access point.

The Reassociation Request frame is an 802.11 management frame that contains information about the client, such as its MAC address, capabilities, and the SSID it wants to associate with. It also includes information about the previous access point the client was connected to.

The new access point uses the information in the Reassociation Request frame to establish a connection with the client. It may also send a Reassociation Response frame to acknowledge the request and complete the process of associating the client with the new access point.

It’s worth noting that before a client can send a Reassociation Request, it must first be authenticated and associated with an access point. This is typically done through an Authentication Request and an Association Request frame, respectively. However, these frames are not used specifically for roaming between access points on the same SSID.

In summary, when a client roams between access points on the same SSID, it sends a Reassociation Request frame to the new access point to establish a connection.

Explanation 3

When a client roams between access points on the same SSID, the 802.11 management frame type that is sent is the “Reassociation Request.”

Explanation:

Reassociation Request: When a client roams between access points on the same SSID, it needs to inform the new access point of its intention to associate and transfer its connection. The client achieves this by sending a Reassociation Request frame to the new access point. This frame contains information about the client’s identity and capabilities.
Authentication Request: The Authentication Request frame is used during the initial connection setup phase. It is sent by the client to the access point to initiate the authentication process. Once the authentication is successful, the access point and client move on to the association phase.
Association Request: The Association Request frame is sent by the client to the access point after the authentication process is successfully completed. It contains information such as the client’s capabilities and desired data rates. The access point then responds with an Association Response frame to acknowledge the association.
Probe Request: The Probe Request frame is used by a client to discover nearby access points. It is sent when a client wants to join a wireless network or when it is actively looking for available networks. The access points respond with Probe Response frames, providing information about their capabilities and network parameters.

In the context of roaming between access points on the same SSID, the client has already completed the authentication and association processes with the initial access point. Therefore, it does not need to send an Authentication Request or an Association Request frame when roaming. Instead, it sends a Reassociation Request frame to inform the new access point about its intention to associate and transfer its connection.

Therefore, the correct answer is A. Reassociation Request.

Explanation 4

The answer is A, Reassociation Request.

A Reassociation Request frame is sent when a client roams between access points on the same SSID. It is used to inform the new access point of the client’s MAC address, SSID, and current BSSID.

Here are some additional details about Reassociation Request frames:

Reassociation Request frames are used to inform the new access point of the client’s MAC address, SSID, and current BSSID.
The frame also includes the client’s capabilities, such as its supported data rates and security settings.
The new access point will then respond with a Reassociation Response frame, which acknowledges the client’s request and confirms the new association.

The other options are incorrect:

Option B: Authentication Request frames are used to authenticate a client to an access point. They are not used when a client roams between access points.
Option C: Association Request frames are used to associate a client to an access point. They are not used when a client roams between access points.
Option D: Probe Request frames are used to discover available SSIDs. They are not used when a client roams between access points.

Explanation 5

The correct answer for the question is A. Reassociation Request.

A reassociation request frame is sent when a client roams between access points on the same SSID. This frame informs the new access point of the client’s previous association and allows the new access point to update the distribution system with the client’s new location.

A reassociation request frame is a type of management frame, which is used to manage the basic service set (BSS) and establish and maintain communications between stations.

A reassociation request frame has the following format:

Explanation 6

The answer is A, Reassociation Request.

A Reassociation Request frame is sent when a client roams between access points on the same SSID. It is used to inform the new access point of the client’s MAC address, current BSSID, and capabilities.

Here are some additional details about Reassociation Request frames:

The frame type is 0x0A.
The frame body contains the client’s MAC address, current BSSID, and capabilities.
The frame is sent to the SSID broadcast address.

The other options are incorrect:

Option B: An Authentication Request frame is sent when a client first associates with an access point.
Option C: An Association Request frame is sent when a client first associates with an access point.
Option D: A Probe Request frame is sent when a client is looking for an access point to associate with.

Explanation 7

The 802.11 management frame type sent when a client roams between access points on the same SSID is the Reassociation Request frame. This frame is similar to an Association Request frame but has a different purpose and is mainly useful in client roaming.

Explanation 8

To answer your question, I think the best management frame type that is sent when a client roams between access points on the same SSID is:

A. Reassociation Request

Here is my explanation:

Option A is a good choice because it accurately describes the management frame type that is sent when a client roams between access points on the same SSID. A reassociation request is a management frame that is sent by a client to an access point when the client wants to change its association from one access point to another within the same extended service set (ESS). An ESS is a group of access points that share the same SSID and are connected by a distribution system (DS). A reassociation request allows the client to maintain its connection to the network without having to perform a full authentication process again. A reassociation request contains information such as the client’s MAC address, the SSID of the ESS, and the MAC address of the previous access point.

The other options are not as good as option A for the following reasons:

Option B is not a good choice because it does not describe the management frame type that is sent when a client roams between access points on the same SSID, but rather the management frame type that is sent when a client wants to join an ESS for the first time or after being disassociated. An authentication request is a management frame that is sent by a client to an access point to establish its identity and credentials before being allowed to associate with the ESS. An authentication request can use different methods of authentication, such as open system or shared key. An authentication request contains information such as the client’s MAC address and the authentication algorithm number.
Option C is not a good choice because it does not describe the management frame type that is sent when a client roams between access points on the same SSID, but rather the management frame type that is sent after an authentication request has been accepted by an access point. An association request is a management frame that is sent by a client to an access point to request access to the ESS and its services. An association request contains information such as the client’s MAC address, the SSID of the ESS, and the supported data rates.
Option D is not a good choice because it does not describe the management frame type that is sent when a client roams between access points on the same SSID, but rather the management frame type that is sent by a client to discover available ESSs in its vicinity. A probe request is a management frame that is sent by a client to broadcast or unicast its interest in joining an ESS. A probe request can contain information such as the SSID of the desired ESS or a wildcard SSID for any ESS. A probe request can be answered by an access point with a probe response that contains information about its ESS.

Explanation 9

The answer is A. Reassociation Request.

When a client roams between access points on the same SSID, it sends a Reassociation Request frame to the new access point. This frame includes the client’s MAC address, the SSID of the network, and the BSSID of the new access point. The access point will then send a Reassociation Response frame to the client, which includes the client’s new association ID. The client will then use this association ID to communicate with the new access point.

Explanation 10

The correct answer is A. Reassociation Request.

When a client roams between access points on the same SSID (Service Set Identifier) within a wireless network, it sends a Reassociation Request management frame.

Let’s elaborate on the different 802.11 management frame types and why Reassociation Request is the appropriate frame for roaming:

A. Reassociation Request:
The Reassociation Request frame is used by a wireless client to request reassociation with a new access point (AP) within the same ESS (Extended Service Set) or on the same SSID. When a client moves from one access point to another while maintaining the same SSID, it needs to inform the new access point of its presence and request reassociation. The Reassociation Request frame carries information about the client, its capabilities, and the SSID it wants to join.

B. Authentication Request:
The Authentication Request frame is used by a wireless client to initiate the authentication process with an access point. It is sent before association, and it is part of the initial process where the client and the AP authenticate each other’s identity and capabilities.

C. Association Request:
The Association Request frame is sent by a wireless client to request association with a specific access point after the authentication process is complete. It includes the client’s capabilities, supported data rates, and SSID information. Association is the process by which the client becomes a member of the BSS (Basic Service Set) and is allowed to communicate through the AP.

D. Probe Request:
The Probe Request frame is used by a client to discover available wireless networks. When a client scans for available wireless networks, it sends Probe Request frames to solicit responses from nearby access points. Probe Request frames are not directly related to roaming within the same SSID.

In summary, when a client roams between access points on the same SSID, it sends a Reassociation Request frame to inform the new access point of its presence and to request reassociation. This allows the client to maintain connectivity and communication as it moves within the wireless network without disruption.

Explanation 11

The correct answer is A. Reassociation Request.

When a client moves from one access point (AP) to another within the same wireless network (SSID), it needs to re-establish its connection with the new AP. To do this, the client sends a Reassociation Request management frame to the new AP.

The Reassociation Request includes the client’s MAC address, the MAC address of the previous AP it was connected to, and other information about the client’s capabilities and preferences. The new AP then responds with a Reassociation Response frame, which includes information about the new association and any changes in network settings.

It’s important to note that the Reassociation Request is only sent when a client roams between APs on the same SSID. If the client moves to a different SSID or a different wireless network, it will need to go through the full authentication and association process with the new network.

Option B, Authentication Request, is used to initiate the authentication process between the client and the AP. Option C, Association Request, is used to request association with an AP for the first time. Option D, Probe Request, is used by a client to discover nearby wireless networks and their capabilities.

Explanation 12

The correct answer is A: Reassociation Request.

Here’s a detailed explanation of why option A is the best choice:

When a client roams between access points on the same SSID (Service Set Identifier), it needs to inform the new access point of its presence and initiate the reassociation process.
The reassociation process is initiated by the client sending a Reassociation Request frame to the new access point. This frame contains information about the client’s identity, capabilities, and the SSID it wants to associate with.
The Reassociation Request frame is part of the 802.11 management frame type. Management frames are used for various functions in a Wi-Fi network, including association, authentication, and roaming.
The Reassociation Request frame is specifically used during the roaming process to establish a connection with the new access point. It allows the client to seamlessly transition from one access point to another without interrupting the network connection.

Option A, Reassociation Request, accurately describes the 802.11 management frame type that is sent when a client roams between access points on the same SSID.

Explanation 13

The correct answer is A. Reassociation Request.

When a wireless client roams between access points on the same SSID, it will send a Reassociation Request frame. This follows the basic process:

The client is already authenticated and associated with the wireless network via an Authentication Request and Association Request frame. This was done when the client first joined the network.
When the client moves out of range of the current access point and into range of a new access point on the same SSID, it will send a Reassociation Request frame to the new access point.
The new access point will accept the Reassociation Request and send a Reassociation Response confirming the successful reassociation.
The client can then begin communicating through the new access point.

The key point is that the client is already authenticated and associated with the network. When roaming between access points on the same SSID, it only needs to reassociate to the new access point using a Reassociation Request frame.

The other frame types listed would not be used in this scenario:

B. Authentication Request – Not needed since client is already authenticated
C. Association Request – Not needed since client is already associated
D. Probe Request – A Probe Request is used when discovering available networks, not when roaming between APs on the same SSID.

Explanation 14

The correct answer is A. Reassociation Request. A reassociation request frame is sent by a client when it wants to switch to a different access point on the same SSID. This can happen when the client moves out of the range of the current access point or when it finds a better access point with a stronger signal. A reassociation request frame contains the MAC address of the current access point and the MAC address of the desired access point, as well as other information such as the client’s capabilities and supported rates. The desired access point then responds with a reassociation response frame, which either accepts or rejects the request. If accepted, the new access point informs the old access point of the client’s move and updates its association table. The old access point then removes the client from its association table and frees up any resources allocated to it.

A reassociation request frame is different from an association request frame, which is sent by a client when it wants to join an access point for the first time or after a disconnection. An association request frame does not contain the MAC address of the current access point, since there is none. An authentication request frame is sent by a client when it wants to authenticate with an access point before associating with it. This can be done using open system authentication or shared key authentication. An authentication request frame contains the authentication algorithm and sequence number, as well as other information such as the client’s capabilities and supported rates. A probe request frame is sent by a client when it wants to discover available access points in its vicinity. A probe request frame can be broadcast to all access points or directed to a specific access point by specifying its SSID. A probe request frame contains the SSID and other information such as the client’s capabilities and supported rates.

Reference

Cisco Certified Network Associate CCNA 200-301 certification exam practice question and answer (Q&A) dump with detail explanation and reference available free, helpful to pass the Cisco Certified Network Associate CCNA 200-301 exam and earn Cisco Certified Network Associate CCNA 200-301 certification.

Question

Answer

Explanation 1

Explanation 2

Explanation 3

Explanation 4

Explanation 5

Explanation 6

Explanation 7

Explanation 8

Explanation 9

Explanation 10

Explanation 11

Explanation 12

Explanation 13

Explanation 14

Reference

Your Support Matters...