[Q87-Q106] Get 100% Real CWAP-404 Accurate & Verified Answers As Seen in the Real Exam!

NO.87 Given: Adjacent Channel Interference (ACI) can cause frame corruption and poor performance in WLANs. You are using a protocol analyzer in the attempt to detect ACI.
What should you look for in such a scenario?

NO.88 What types of wireless systems are illustrated?

NO.89 You are explaining capacity planning to another engineer assisting you on a WLAN implementation project.
As part of the explanation, you provide the following formula:
C = B * log2(1 + S/N).
What does this formula define?

NO.90 As a wireless network consultant you have been called in to troubleshoot a high-priority issue for one of your customers. The customer’s office is based on two floors within a multi-tenant office block. On one of these floors (floor 5) users cannot connect to the wireless network. During their own testing the customer has discovered that users can connect on floor 6 but not when they move to the floor 5. This issue is affecting all users on floor 5 and having a negative effect on productivity. To troubleshoot this issue, you perform both Spectrum and Protocol Analysis. The Spectrum Analysis shows the presence of Bluetooth signals which you have identified as coming from wireless mice. In the protocol analyzer you see the top frame on the network is Deauthentication frames. On closer investigation you see that the Deauthentication frames’ source addresses match the BSSISs of your customers APs and the destination address is FF:FF:FF:FF:FF:FF:FF. What do you conclude from this troubleshooting exercise?

NO.91 The PHY layer provides framing by adding a header to create what type of data unit?

NO.92 A PHY Header is added to the PSDU at which sub-layer?

NO.93 How many frames make up the Group Key Handshake excluding any Ack frames that may be required?

NO.94 Given a protocol analyzer can decrypt WPA2-PSK data packets providing the PSK and SSID are configured in the analyzer software.
When performing packet capture (in a non-FT environment) which frames are required in order for PSK frame decryption to be possible?

NO.95 When performing protocol analysis, you notice a high number of RTS/CTS frames being transmitted on an HT network. You suspect this may be due to HT protection mechanisms. Where in the Beacon frame would you look to determine which one of the four HT protection modes the AP is operating in?

NO.96 You are tasked with describing the various frames used in 802.11 communications.
What frame is used for spectrum management, fast BSS transition and some other actions taken within a BSA?

NO.97 Given: The Frame Check Sequence (FCS) is a 32 CRC used for error detection. The CRC is calculated over what?

NO.98 Which one of the best following is an advantage of using display filters instead of capture-time filters?

NO.99 What is the function of the PHY Preamble?

NO.100 What is the function of the PHY Preamble?

NO.101 What must occur before an HT STA operating in an EDCA BSS can transmit a data frame over the wireless medium? (Choose 3)

NO.102 What HT PPDU format is shown in the exhibit?

NO.103 Given: There are many differences between analyzing wireless and wired networks. In a wireless network, there is no guarantee that one station can hear another station’s transmissions.
If no corrective actions are taken nor corrective mechanisms implemented when a “hidden node” problem exists, which measurable statistics parameter will likely increase in a wireless protocol analyzer?

NO.104 Prior to a retransmission what happens to the CWmax value?

NO.105 In a Spectrum Analyzer the Swept Spectrogram plot displays what information?

NO.106 In the 2.4 GHz band, what data rate are Probe Requests usually sent at from an unassociated STA?