CCNA – Wireless
Here you will find answers to CCNA Wireless Questions
If you are not sure about Wireless, please read my Wireless tutorial and Basic Wireless Terminologies
Question 1
Which additional configuration step is necessary in order to connect to an access point that has SSID broadcasting disabled?
A. Set the SSID value in the client software to public.
B. Configure open authentication on the AP and the client.
C. Set the SSID value on the client to the SSID configured on the AP.
D. Configure MAC address filtering to permit the client to connect to the AP.
Answer: C
Question 2
What is one reason that WPA encryption is preferred over WEP?
A. A WPA key is longer and requires more special characters than the WEP key.
B. The access point and the client are manually configured with different WPA key values.
C. WPA key values remain the same until the client configuration is changed.
D. The values of WPA keys can change dynamically while the system is used.
Answer: D
Question 3
Which two devices can interfere with the operation of a wireless network because they operate on similar frequencies? (Choose two)
A. copier
B. microwave oven
C. toaster
D. cordless phone
E. IP phone
F. AM radio
Answer: B D
Question 4
A single 802.11 g access point has been configured and installed in the center of a square office. A few wireless users are experiencing slow performance and drops while most users are operating at peak efficiency. What are three likely causes of this problem? (Choose three)
A. mismatched TKIP encryption
B. null SSID
C. cordless phones
D.mismatched SSID
E. metal file cabinets
F. antenna type or direction
Answer: C E F
Question 5
Refer to the exhibit. What two facts can be determined from the WLAN diagram? (Choose two)
A. The area of overlap of the two cells represents a basic service set (BSS).
B. The network diagram represents an extended service set (ESS).
C. Access points in each cell must be configured to use channel 1.
D. The area of overlap must be less than 10% of the area to ensure connectivity.
E. The two APs should be configured to operate on different channels.
Answer: B E
Explanation
A group of access points connected to the same WLAN are known as an Extended Service Set (ESS). Within an ESS, a client can associate with any one of many access points that use the same Extended service set identifier (ESSID). It allows users to roam about an office without losing wireless connection -> B is correct.
Two APs operating near each other should be configured on different channels to avoid interference. There are fourteen channels defined in the IEEE 802.11b channel set. Each channel is 22MHz wide but there is only 5MHz channel separation so the channels are overlapped. Channels 1, 6 and 11 are most commonly used because they do not overlap as shown below:
So if we configure an AP with channel 1 then we should set its nearest AP to channel 6 or 11 to make sure their channels are not overlapped.
Question 6
What are three basic parameters to configure on a wireless access point? (Choose three)
A. SSID
B. RTS/CTS
C. AES-CCMP
D. TKIP/MIC
E. RF channel
F. authentication method
Answer: A E F
Question 7
What speeds must be disabled in a mixed 802.11 b/g WLAN to allow only 802.11 g clients to connect?
A. 6,9,12,18
B. 1,2,5.5,6
C. 5.5,6,9,11
D. 1,2,5.5,11
Answer: D
Explanation
The data rates of 802.11b are 1, 2, 5.5 and 11 Mbps using Direct Sequence Spread Spectrum (DSSS) while the data rates of 802.11g are 1, 2, 5.5, 11 Mbps using DSSS and 6, 9, 12, 18, 24, 36, 48, 54 Mbps using OFDM. So if we only want to allow 802.11g clients, just disable 1, 2, 5.5 and 11 Mbps speed.
Question 8
What is the maximum data rate specified for IEEE 802.11b WLANs?
A. 10 Mbps
B. 11 Mbps
C. 54 Mbps
D. 100 Mbps
Answer: B
Question 9
A wireless client cannot connect to an 802.11 b/g BSS with a b/g wireless card. The client section of the access point does not list any active WLAN clients. What is a possible reason for this?
A. The incorrect channel is configured on the client.
B. The client’s IP address is on the wrong subnet.
C. The client has an incorrect pre-shared key.
D. The SSID is configured incorrectly on the client.
Answer: D
Question 10
Which two features did WPAv1 add to address the inherent weaknesses found in WEP? (Choose two)
A. a stronger encryption algorithm
B. key mixing using temporal keys
C. shared key authentication
D. a shorter initialization vector
E. per frame sequence counters
Answer: B E
Question 11
What is the maximum data rate specified for IEEE 802.11b WLANs?
A. 10Mbps
B. 11Mbps
C. 54Mbps
D. 100Mbps
Answer: B
Explanation
Popular wireless standards are listed below:
* IEEE 802.11a: 54 Mbps in the 5.7 GHz ISM band
* IEEE 802.11b: 11 Mbps in the 2.4 GHz ISM band
* IEEE 802.11g: 54 Mbps in the 2.4 GHz ISM band
Question 12
You have finished physically installing an access point on the ceiling at your office. At a minimum, which parameter must be configured on the access point in order to allow a wireless client to operate on it?
A. AES
B. PSK
C. SSID
D. TKIP
E. WEP
Answer: C
http://www.openxtra.co.uk/articles/wpa-vs-wep
The weaknesses in WEP have been well publicized. TKIP’s improvements are described below. IV values can be reused/IV length is too short The length of the IV has been increased from 24bits to 48bits. Rollover of the counter is eliminated. Reuse of keys is less likely. In addition IVs are now used as a sequence counter, the TSC (TKIP Sequence Counter), protecting against replaying of data, a major vulnerability in WEP.
if anyone going to give CCNA Exam soon contact me…
prashant.germany@gmail.com
I’m also preparing for CCNA
Q8 and Q11 same questions?
Hey guys, I am taking CCNA 640-802 exam in August. Could anyone please send me latest dumps to mean_p@live.com?
Thank you!
Taking the CCNA examd 640-802 in 2 more weeks someone please send me latest dump..
many post here was 2011
i heard the ccna exam now are so many IPv6 Question since ipv4 are exhausted
is this site are still valid? thanks.
Know the concept, Study Hard and Pass!
Help, what are the encryption methods of wireless that based on RC4?
need help July 7th, 2012 Taking the CCNA examd 640-802 in 2 more weeks someone please send me latest dump.. on my email kami645@gmail.com
im taking CCNA exam in this week on 18-7-2012 please anyone can send me latest dumps
Email: salim.baloushi@iitcoman.com
thanks
Great practical dcevie. Nice for enabling ethernet printers & other hardwired dcevies to be wireless. I also like that I can later add a network switch to allow multiple dcevies to be chained off the single port in the back of the wireless repeater. Note on setup: My router didn’t have WPS, so I needed to do the manual setup. After getting out a magnifying glass the setup instructions were fine. But the wireless repeater uses a static IP it won’t grab a dynamic IP like other DHCP dcevies on your network. Its default static IP is 192.168.1.2. You thusly have to make sure that: 1. Your router’s default network is 192.168.1.xx. If not, you need to either change the router to this, or the repeater’s static IP to whatever your router uses (eg. 192.168.0.xx). It is probably easier to change the repeater. Just do it during the setup while your PC is still hardwired to it. 2. No other dcevie on your network (PC, printer, etc) has the same dynamic IP as the repeater’s. Else you will get an IP conflict. I happened to have something else at 192.168.1.2. I needed to configure the router to reserve .2, and then reboot the other dcevie that had grabbed this IP so it gets a different one via DHCP. Afterwards things worked fine. If your router has WPS then probably either or both of these issues goes away.
@Anderson SilVAAAAAAAAA
Yes, I took the test about 3 weeks ago and there were a lot of ipv6 questions. some of the same from this site.. good luck!
Hello, Used your site as study guide for CCNA, passed, and have moved on to CCNP. Thinking about investing in a lab setup @ home. I found several companies that provide equip, not sure what to get. Any recommendations for an equip supplier?
Hi. Used 9tut, read sybex ccna study guide cover to cover, and finished off with lead2pass to get my CCNA last month. Working on CCNA Secuirty now, then maybe CCNA Wireless or CCDA. Good luck all! Feels great once you pass. Also thinkin the same thing as riehlib, about getting my own setup. Or atleast a catalyst switch and router at minimum.
your Question 7 explanation numbers are wrong fix them
@ 1 – dey r proper as its shown for DSSS and den for OFDM……………
Can someone please send me the last dumps?
snoborderphx@gmail.com
Thank you
Please please send me the last dumps. I am planing to go to for exam after 2 weeks.
golden_ring@hotmail.com
Hi; I’ve received the link of the material that I should purchase for CCNA exam. http://www.ciscovce.com/ccna
Is it sure or guarantee that I will pass If I study the practice question there?
@GoldingRing
I went to the the lotto shop which always advertised that Jackpots were sold here and i tried to buy alot of times and no winning. What should i do now ?
Read this site and books and practice then give it a go you will see the guarantee
Exam tommorrrow guys i can not sleeepppp
im taking CCNA exam in this week please anyone can send me latest dumps
Email: cloumafuta@gmail.com
thanks
please some one send me latest dumps, my exam is after 4 days. I like to tanks in advance.
Can i have latest dumps for CCNA please.Thanks
My Email address: imranullah@hotmail.co.uk
im taking CCNA exam in a week’s time please anyone with latest dump. thanks in advance. My e-mail address:hmahaso.mahaso@gmail.com
iam taking ccna 640-802 exam in a week so plese anyone suggest new dumps to me please…….
My email add: puri232@gmail.com
plz send me latest dumps
Q8 an Q11 are identical.. idea was set 802.11g and answer “C” on second one probably? :)
will be taking ccna 640-802 exam in 2 weeks… is there a new dump available?
ANYONE got the latest dump please and thanks, carrbrian101@hotmail.com
Does anyone have the latest dump? I’d greatly appreciate the latest dump… emanuelle3206@yahoo.com
iam taking ccna 640-802 exam in a week so plese anyone suggest new dumps to me please…….
my email: prj_manoj999@yahoo.com
Just cleared my exam with a perfect perfomance (1000/1000)…..GRATITUDES: First and foremost to the almighty God for everythng he has been since i started preparing for this exam abt a year ago! the Todd lamlle (6th edition), this book gave me the foundation i needed and i consider myself one of the fastest subnetting geek thanks to Todd’s chapter on subnetting…then seriously, who wud forget this guy (9tut) thanks alot man,i finished my exam 40 minutes before time thanks to the speed you gave me in simulations…examcollection, thanks alot guys i ddint see any qn that i hadnt met in the dumps before, then the CBT nuggets videos….they cleared (enhanced) all of the concepts i have learned from all of the materials i have already mentioned! thank you all so much…..i will DONATE when i get my credit card! keep the good work going 9tut
ABOUT MY EXAM:
I had total of 50 questions….
Had three simulations….ACL2, same as here at 9tut but modified as the third table of modifications above and i was dealing with host B plus different IP addresses, EIGRP almost the same as here, had to change the AS in router Home 2 from somethng 21 to 221 and add the appropriate networks also i had to delete and add some networks from router Home 1 (central router) and finaly the VTP…same as here just different question to follow the same procedures in resolving
NB: i ddnt see anythng that i had not come across before
for any other enquiries find me at ropamson@gmail.com …..best of luck for everybody working on CCNA
ropam which dump did u follow?
HI, I am thinking to take (CCNA 640-802) exam in few weeks. can anybody send me the latest dumps.i will be grateful. my email address is as follows.
imranullah@hotmail.co.uk
Can someone send me the latest dump…taking test in a couple of weeks.
Thanks
*** I have an exam this week…..can someone please send me the latest dump at this address jason.ar88@hotmail.com
Thanks
Dear 9tut, thank you for this website, but I know it shouldnt be hard to implement a simple javascript to have answers to questions hidden and only to show on mouse hover or click on a button. Just a thought, not complaining :)
I’m new in this site and i have notice a lightly mistake in the explanation of the question 7.
The 802.11g use only the OFDM modulation but is alwats compatible with the 802.11b.
There is no DSSS in 802.11g
Thank you for this site. It’s great..
Q. Which two privileged mode ios commands, can be used to determine a cisco router chassis serial number. (choose two)
A. show inventory
B. show flash: file sy
C. dir flash: include chassis
D. show diag
E. show controllers
Answer……. A & D ……how?
Taking the test oct 19. Please send me the latest dump at walvarez@cbetech.com
Hi guys,
i will take CCNA exam in 2 hours, i will let you know if i still remember some of the questionaires :-)
God Bless you all.. :-)
@Misterysos,
How was your exam .
how many q’s on the wireless exam?
also, will passing the wireless exam update all my other CISCO certs that are due to expire next year (ccent, ccna, ccda, ccna security, ccna voice)?
Thanks
I HAVE A DOUBT… CAN ANY PASSED ENGINEER PLEASE ANSWER IT ?
IN THE CCNA EXAM, CAN WE SKIP ANY UNKNOWN ANSWER ? OR DO WE HAVE TO ANSWER ALL FROM 1 TO 50 QUESTIONS CONTINUOSLY WITHOUT SKIP ?
THANKS
@Any One
well you have to attempt every question continuously if you skip any question you will not be able to re-attempt again..
good luck
Can someone send me the latest dump… taking test in a couple of weeks.
Thanks!!!!!!!
excel_troy@hotmail.com
can someone send me the lastest dump… please
taking test in a one week.
thanks!!!
hunterhershemsley@hotmail.com
Please send me latest CCNA dumps gangrel.tusk@gmail.com