CCNA – Basic Questions
Here you will find answers to CCNA – Basic Questions
Question 1
For which type of connection should a straight-through cable be used?
A. switch to switch
B. switch to hub
C. switch to router
D. hub to hub
E. router to PC
Answer: C
Explanation
To specify when we use crossover cable or straight-through cable, we should remember:
Group 1: Router, Host, Server
Group 2: Hub, Switch
One device in group 1 + One device in group 2: use straight-through cable
Two devices in the same group: use crossover cable
In this case we can use straight-through cable to connect a switch to a router -> C is correct.
Question 2
Which type of cable is used to connect the COM port of a host to the COM port of a router or switch?
A. crossover
B. straight-through
C. rolled
D. shielded twisted-pair
Answer: C
Explanation
The correct question should be “Which type of cable is used to connect the COM port of a host to the CONSOLE port of a router or switch?” and the correct answer is rollover cable. But we can’t plug this rollover cable directly into our host because it will not work. We often use a RJ45 to DB9 Female cable converter as shown below:
Question 3
What is the first 24 bits in a MAC address called?
A. NIC
B. BIA
C. OUI
D. VAI
Answer: C
Explanation
Organizational Unique Identifier (OUI) is the first 24 bits of a MAC address for a network device, which indicates the specific vendor for that device as assigned by the Institute of Electrical and Electronics Engineers, Incorporated (IEEE). This identifier uniquely identifies a vendor, manufacturer, or an organization.
Question 4
In an Ethernet network, under what two scenarios can devices transmit? (Choose two)
A. when they receive a special token
B. when there is a carrier
C. when they detect no other devices are sending
D. when the medium is idle
E. when the server grants access
Answer: C D
Explanation
Ethernet network is a shared environment so all devices have the right to access to the medium. If more than one device transmits simultaneously, the signals collide and can not reach the destination.
If a device detects another device is sending, it will wait for a specified amount of time before attempting to transmit.
When there is no traffic detected, a device will transmit its message. While this transmission is occurring, the device continues to listen for traffic or collisions on the LAN. After the message is sent, the device returns to its default listening mode.
So we can see C and D are the correct answers. But in fact “answer C – when they detect no other devices are sending” and “when the medium is idle” are nearly the same.
Question 5
Which two benefits are provided by using a hierarchical addressing network addressing scheme? (Choose two)
A. reduces routing table entries
B. auto-negotiation of media rates
C. efficient utilization of MAC addresses
D. dedicated communications between devices
E. ease of management and troubleshooting
Answer: A E
Question 6
When a host transmits data across a network to another host, which process does the data go through?
A. standardization
B. conversion
C. encapsulation
D. synchronization
Answer: C
Explanation
To transmit to another host, a host must go through the TCP/IP model (very similar to the OSI model). At each layer, the message is encapsulated with that layer’s header (and trailer if it has). This process is called encapsulation.
Question 7
Which two Ethernet fiber-optic modes support distances of greater than 550 meters?
A. 1000BASE-CX
B. 100BASE-FX
C. 1000BASE-LX
D. 1000BASE-SX
E. 1000BASE-ZX
Answer: C E
Explanation
Below lists the cabling standards mentioned above
| Standard | Cabling | Maximum length |
| 1000BASE-CX | Twinaxial cabling | 25 meters |
| 100BASE-FX | Two strands, multimode | 400 m |
| 1000BASE-LX | Long-wavelength laser, MM orSM fiber | 10 km (SM)3 km (MM) |
| 1000BASE-SX | Short-wavelength laser, MM fiber | 220 m with 62.5-micron fiber; 550 mwith 50-micron fiber |
| 1000BASE-ZX | Extended wavelength, SM fiber | 100 km |
Note:
+ MM: Multimode
+ SM: Single-mode
(Reference: The official self-study test preparation guide to the Cisco CCNA INTRO exam 640-821)
Question 8
Refer to the exhibit. What type of connection would be supported by the cable diagram shown?
| Pin | Color | Function | Pin | Color | Function |
| 1 | White/Green | TX+ | 1 | White/Green | TX+ |
| 2 | Green | TX- | 2 | Green | TX- |
| 3 | White/Orange | RX+ | 3 | White/Orange | RX+ |
| 6 | Orange | RX- | 6 | Orange | RX- |
A. PC to router
B. PC to switch
C. server to router
D. router to router
Answer: B
Explanation
From the “Pin” and “Color” in the exhibit we know that this is a straight-through cable so it can be used to connect PC to switch.
Question 9
Refer to the exhibit. What type of connection would be supported by the cable diagram shown?
| Pin | Color | Function | Pin | Color | Function |
| 1 | White/Green | TX+ | 3 | White/Green | RX+ |
| 2 | Green | TX- | 6 | Green | RX- |
| 3 | White/Orange | RX+ | 1 | White/Orange | TX+ |
| 6 | Orange | RX- | 2 | Orange | TX- |
A. PC to router
B. PC to switch
C. server to switch
D. switch to router
Answer: A
Explanation
This is a crossover cable so it can be used to connect PC and router.
Question 10
Which two topologies are using the correct type of twisted-pair cables? (Choose two)
A. 
B. 
C. 
D. 
E. 
Answer: D E
hey thanks for adding this, while we are studying
Can you take a look at Q9 Thanks
@mallaery: kindly look at the pin number for or rather, the explanation below it.
Thnx a lot…..
It is a matter shut to my heart cheers, wherever are your make contact with particulars however?
Good information
Can some one explain Q10? Why is it not a crossover?
Like devices use a crossover cable.
Can you explain Q-9
A. PC to Switch requires a straight through cable.
B. Router: Serial interface requires a serial cable.
C. Router to Switch requires a straight through cable.
D. PC to Router (ethernet) requires a crossover cable.
E. Switch to Switch (think trunking(VTP)) requires a crossover cable.
Edit: B. Router: Console interface requires a rollover cable.
nice explanation there by uidzero. please guys i`m about to write CCNA exam. any clues about the exams should be forwarded to bostoncalyx@yahoo.com
Can you please send me the latest dump of questions for the CCNA exams?
I will be taking my certification exam early next year.
Thank you so much! 9tut is such a great place to learn! – abrahamgoc@yahoo.com
you can find practice questions on
http://www.ciscovce.com
thank you
but
Question 9
have wrong color in it!!!
Thanks for the help uidzero.
thanx a lot http://www.9tut.com.
Thanks a lot 9tut.com
Great Site! Getting Ready for my exam :) Cisco 4 Life!!!
Rest R waste, Cisco is the best.
hey, thanks a lot
i i pas, i will drink 4 beers on you !!
Wow. This is a very helpful site, thanks for putting this up. :)
Thnx
9tut
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Can someone help?
Which Cisco IOS diagnostics command can disrupt the operation of a router under high load conditions?
a. debug all
b. show running-config
c. show processes cpu
d. logging host ip address
Thanks…
@misha
Which Cisco IOS diagnostics command can disrupt the operation of a router under high load conditions?
a. debug all
i <3 9tut.com
thanks Che
another question..
What is the function of the command switchport trunk native vlan 999 on a trunk port?
a.it designates vlan 999 for untagged traffic
b.it blocks vlan 999 traffic from passing on the trunk
c.it creates a vlan 999 interface
d.it designates vlan 999 as the default for all unknown tagged traffic
is it A or D? Can you also explain why??
Thanks..
hi misha
,the concept of native vlan comes in 802.1q ,and it is use to pass untagged traffic,
so the answer is A. not d.(because native vlan never carry the tagged frame of any vlan)
this concept is manly used in VOIP………one thing more both end of switch must have same native vlan id …….otherwise >>>>native vlan missmatch error >>>>is pop up by the switch..
thanks devashish!
What is the function of the command switchport trunk native vlan 999 on a trunk port?
a.it designates vlan 999 for untagged traffic
b.it blocks vlan 999 traffic from passing on the trunk
c.it creates a vlan 999 interface
d.it designates vlan 999 as the default for all unknown tagged traffic
is it A…..
thanks a lot ..9tut…
Em great admiremr of this site, em lovin it. thank you 9tut for this great support of IT students.
Nice Link recommended by 9tut forum, great help of understanding the mac adderesses (EUI48/EUI64)
http://en.wikipedia.org/wiki/MAC_address#Address_details
Good works fellows
Keep it up,
Jam
he ,please can anyone give me the path of latest dump ccna
passed ccna today….with 907 marks….only 48 questions…..3 simulatinons ACL,EIGRP,VTP SIMULATION…….&ONE OR TWO NEW QUESTIONS….
بصراحة يجماعة كده كتير مش عارفين نودي جمايلكم فين وبنشكر الملك فهمي تعب معانا بصراحة واحنا مكسوفين
@dileep …hey can u please tell me which dumps did u refer to ??..
@indrajith collect from examcollections.com better download and practice these sets of dumps …….
Cisco.Acme.640-802.v2011-07-09.by.Collisio.486q and
Cisco.TestInside.640-802.v2011-09-24.by.Rogues.827q
congratulations dileep paji, Anyone can help me with latest and sure dumps. As I am going to take exame on 1st of the next month. Wish me best luck and help me friends.
Thank You.
My Email add: m.alikam@yahoo.com
Please send me the latest dumps i m going to give exam on 1st December
my email
faisal.safdar@live.com
dont really get question 9…but hey thanks for the wonderful work done
9tut help’s a lot.
Thank’s
Thnx 9tut.com
hello friends, today i went through CCNA exam and got it. I wanna thank of 9tut. Sims were same(VTP, ACL2, EIGRP ) with some change. All the question were as at this site.
Thanks again.
But there was a problem in the eigrp lab. I had been asked to configure the ip address of the interface connected to with another router. The problem was that it was not accepting the address which was 192.168.22.14 255.255.255.252 because of this i didn’t complete the eigrp configuration.
THAT was really very big problem .
Hi 9tut,
Question 1 , answer C is wrong if i am not wrong. because from Switch to Router. should use cross-over cable.
Kindly correct me if i am wrong !
Sorry, i was wrong.
Hallo, please can anyone give me the latest dump?
e-Mail: kdp1311@nefkom.net
Hello, please can anyone give me the latest dump? it may helpful to my coming exam on dec15.
Email id is: ravimarkande@gmail.com