New CCNA – Switch Questions
Question 1
Refer to the exhibit.
Switch-1 needs to send data to a host with a MAC address of 00b0.d056.efa4. What will Switch-1 do with this data?
A. Switch-1 will drop the data because it does not have an entry for that MAC address.
B. Switch-1 will forward the data to its default gateway.
C. Switch-1 will flood the data out all of its ports except the port from which the data originated.
D. Switch-1 will send an ARP request out all its ports except the port from which the data originated.
Answer: C
Explanation
The MAC address of 00b0.d056.efa4 has not been learned in its MAC address table so Switch-1 will broadcast the frame out all of its ports except the port from which the data originated.
Question 2
A technician has installed SwitchB and needs to configure it for remote access from the management workstation connected SwitchA. Which set of commands is required to accomplish this task?
A.
SwitchB(config)#interface FastEthernet 0/1
SwitchB(config)#ip address 192.168.8.252 255.255.255.0
SwitchB(config)#no shutdown
B.
SwitchB(config)#ip default-gateway 192.168.8.254
SwitchB(config)#interface vlan 1
SwitchB(config)#ip address 192.168.8.252 255.255.255.0
SwitchB(config)#no shutdown
C.
SwitchB(config)#interface vlan 1
SwitchB(config)#ip address 192.168.8.252 255.255.255.0
SwitchB(config)#ip default-gateway 192.168.8.254 255.255.255.0
SwitchB(config)#no shutdown
D.
SwitchB(config)#ip default-network 192.168.8.254
SwitchB(config)#interface vlan 1
SwitchB(config)#ip address 192.168.8.252 255.255.255.0
SwitchB(config)#no shutdown
Answer: B
Explanation
To remote access to SwitchB, it must have a management IP address on a VLAN on that switch. Traditionally, we often use VLAN 1 as the management VLAN (but in fact it is not secure).
In the exhibit, we can recognize that the Management Workstation is in a different subnet from the SwitchB. For intersubnetwork communication to occur, you must configure at least one default gateway. This default gateway is used to forward traffic originating from the switch only, not to forward traffic sent by devices connected to the switch.
Question 3
A switch is configured with all ports assigned to vlan 2 with full duplex FastEthernet to segment existing departmental traffic. What is the effect of adding switch ports to a new VLAN on the switch?
A. More collision domains will be created.
B. IP address utilization will be more efficient.
C. More bandwidth will be required than was needed previously.
D. An additional broadcast domain will be created.
Answer: D
Question 4
Refer to the exhibit. The two connected ports on the switch are not turning orange or green. What would be the most effective steps to troubleshoot this physical layer problem? (Choose three)
A. Ensure that the Ethernet encapsulations match on the interconnected router and switch ports.
B. Ensure that cables A and B are straight-through cables.
C. Ensure cable A is plugged into a trunk port.
D. Ensure the switch has power.
E. Reboot all of the devices.
F. Reseat all cables.
Answer: B D F
Explanation
The ports on the switch are not up indicating it is a layer 1 (physical) problem so we should check cable type, power and how they are plugged in.
Question 5
Refer to the exhibit.
What two results would occur if the hub were to be replaced with a switch that is configured with one Ethernet VLAN? (Choose two)
A. The number of collision domains would remain the same.
B. The number of collision domains would decrease.
C. The number of collision domains would increase.
D. The number of broadcast domains would remain the same.
E. The number of broadcast domains would decrease.
F. The number of broadcast domains would increase.
Answer: C D
Question 6
Refer to the exhibit. Give this output for SwitchC, what should the network administrator’s next action be?
A. Check the trunk encapsulation mode for SwitchC’s fa0/1 port.
B. Check the duplex mode for SwitchC’s fa0/1 port.
C. Check the duplex mode for SwitchA’s fa0/2 port.
D. Check the trunk encapsulation mode for SwitchA’s fa0/2 port.
Answer: C
Question 7
Which three statements accurately describe layer 2 Ethernet switches? (choose three)
A. Microsegmentation decreases the number of collisions on the network.
B. If a switch receives a frame for an unknown destination.it uses ARP to resolve the address.
C. Spanning Tree Protocol allows switches to automatically share vlan information.
D. In a properly functioning network with redundant switched paths, each switched segment will contain one root bridge with all its ports in the forwarding state. All other switches in that broadcast domain will have only one root port.
E. Establishing vlans increases the number of broadcast domains.
F. Switches that are configured with vlans make forwarding decisions based on both layer 2 and layer 3 address information.
Answer: A D E
Question 8
Why will a switch never learn a broadcast address?
A. Broadcast frames are never sent to switches.
B. Broadcast addresses use an incorrect format for the switching table.
C. A broadcast address will never be the source address of a frame.
D. Broadcasts only use network layer addressing.
E. A broadcast frame is never forwarded by a switch.
Answer: C
Question 9
Refer to the exhibit:
Which two statements are true of the interfaces on Switch1? (Choose two)
A. Interface FastEthernet0/2 has been disabled.
B. Multiple devices are connected directly to FastEthernet0/1.
C. FastEthernet0/1 is configured as a trunk link.
D. FastEthernet0/1 is connected to a host with multiple network interface cards
E. FastEthernet0/5 has statically assigned MAC addresses.
F. A hub is connected directly to FastEthernet0/5
Answer: C F
Explanation
FastEthernet0/1 can receive traffic from multiple VLANs -> it is configured as a trunk.
There are two MAC addresses learned from FastEthernet0/5 -> a hub is used on this port.
Question 10
The network administrator normally establishes a Telnet session with the switch from host A. The administrator’s attempt to establish a connect via Telnet to the switch from host B fails, but pings from host B to other two hosts are successful. What is the issue for this problem?
A. Host B and the switch need to be in the same subnet.
B. The switch needs an appropriate default gateway assigned.
C. The switch interface connected to the router is down.
D. Host B need to be assigned an IP address in vlan 1.
Answer: B
Explanation
Host A (172.19.1.1) and the management IP address of the Switch (172.19.1.250) are in the same subnet so telnet from host A to the switch can be successful even if a default gateway is not set on host A.
But host B (172.19.32.2) and the management IP address of the Switch (172.19.1.250) are not in the same subnet so host B needs a default gateway to telnet to the switch. The default gateway on host B should be 172.19.32.254.
i don’t understand why (F) is correct answer in Question 9
@Iasha@…from the information given by show cdp neighbor we find that der is no Fa0/5 in CDP neighbors,however Fa0/5 correspond to two MAC addresses in same vlan thus we know dat Fa0/5 is connected to hub…..
if same option is given for fa 0/1 then that option is also ri8?????
will you plz explain q5 ans @Apur…?????
@danish
q5.C is correct….. every switch port has its own collision domain unlike hub which is single collision domain device.each port in switch has its own dedicated BW bt hub dont have. so collision domains will increase once hub is replaced by switch.
D is correct coz neither switch or hub can break broadcast domain to do so we need router to break broadcast domain. so weather it is switch or hub broadcast domain will remain same.
@Claudio I’m agree with you. If you CAN ping to the others hosts in DIFFERENT VLAN, FROM HOSTB, then routing is working well. I don’t understand why host-b can’t telnet the switch (the vlan is the same for host-a, with host-b can ping without problems)
Q1, Q6 on 15th Feb.
I was wrong.
Finally, i understand the question (Q10):
Just think change switch for host: do you need a gateway to access it? It doesn’t care about all other hosts and their gateways.
I hope with this could help others (like me) don’t waste a lot of time with this…..
There is an error in Q10. Host C IP address is wrong. It should be 172.19.33.13/24
. So it stays on the same subnet as its vlan gateway 172.19.33.254/24.
Can somebody explain me y B in Q 5???
Collision domains will be decreased as it replaced with a switch
So should it be B & D??
Got the answer for Q 5 by above comments which has been explained by ARPU
Passed yesterday with score 1000 Thank God
The exam was 51 questions, only one drag and drop about cable types, all questions are very easy just similar to 9tut.
The lab simulations were Eigrp , ACL1 (similar to 9tut exactly) and ACL2 (modification 3 but with host B to access the finance server)
Good luck for everyone, just be relaxed its very very easy :)
questions 1,3,5,6 were on it
Hello Ghada,
Does ? and tab work on the lab?
I really did not understand Q10. Could somebody explain it more clear?
Q3,4,7 today, 958/1000, 9tut last dumps
@ Tuscler
Please read the “router on a stick” chapter. Basically you will need to:
1. create sub interfaces on the router’s Fa0/0 interface
2. assigned IP addresses to each sub interfaces that are in the same subnet as the hosts (also carries same VLAN)
So, since Host C and Fa0/0.3 are not in the same subnet, ping to switch won’t work either just like in Host B case.
@Malo,
I read that they work normally, but they might make u lose some few marks, but i do not know for sure as i didnt use them, the labs are exactly as 9tut, so u will not need them much
Good Luck :)
I dont understand yet Q9. Why the answers are C & F? Please explain.. Apur has limited explanation can you elaborate that? Many Thanks!
In Question 10 :- It is mentioned that the “pings from host B to other two hosts are successful” means Host B (172.19.32.2) and Host A (172.19.1.1) can communicate. Already the switch has an appropriate default gateway assigned. Isn’t it?
will anybody plz explain.
Q6
Bonjour a tout le monde s’il vous plais je dois passe mon certif au mois de mais prochain je veux la dernière decharge.
Bonjour a tout le monde s’il vous plais je dois passe mon certif au mois de mais prochain je veux la dernière decharge. Mon email: madiouinfo@yahoo.fr
Bonjour a tout le monde s’il vous plais je dois passe mon certif au mois de mais prochain je veux la dernière decharge et s’il existe en français. Mon email: madiouinfo@yahoo.fr
Passed my CCNA exam today (18th Mar)… Q1, Q2 and Q10 in exam
In Q2 Why the answer cannot be C where the configurations commands are same as in B.
Yes Q2 I think the right answer is C, where you add the ip default-gateway
oh I see, yes answer is b where you put ip default gateway globally. Ans C is different as it is under vlan 1
B is correct
@keskarashutosh
you don’t need a default-gateway set on the switch for host B to ping host A. There can be no default-gateway set on the switch and host A and host B can still communicate. But in order to telnet the switch from host B, the switch needs to have an ip-address in the management vlan (vlan 1) as well as an ip-default-gateway.
Q4,6,7,10
Hi..
In Switch port security can it possible to assign multiple ports at a time…???
Like we assign multiple ports at a time to any vlan…
In Q2, the management workstation is supposedly on Vlan1, in the network 192.168.9.0/24. How could we set the new switch’s Vlan1 address as 192.168,8.252/24?
Q3,7
Hi all,
I don’t understand the Q6 if .
I don’t understand the Q9.
Hi Searche,
In Q6 its been shown in the output that there are errors being received on the link. Errors could be one of the following reasons.
Duplex mismatch on the ports of switches (one using half duplex, other full)
Speed of the ports (one set to 10 Mbps other set to 100 Mbps)
We know that port on switchC is set to Full duplex 100 Mbps. We will check and verify if same values have been set on Switch A port fa0/2 … :)
Hi Mahi ,,
In Q9, We can see from the given information that port Fa0/1 is dealing with multiple VLANs. A port can only allow multiple VLANS to pass through it if it is a Trunk port only. So option ‘C’ that Fa0/1 is a trunk port.
Similarly from the given data we can see that the port Fa0/5 is serving two MAC addresses on same VLAN, which is only possible if we connect that port to a HUB and then HUB is connected to multiple devices.
Hello 9tut please provide switch tutorial
Hi Beel
Thanks. Your reply is so worthy.
this is my mail id: mufaruqimahi@gmail.com
i want contact with u.
Q2 answer C is confusing…. output should be in int config mode after ‘int vlan 1′ command…. one of the reasons it is wrong, but output doesn’t go to ‘int config mode’ in the right answer B either, so…. problem is where ‘ip default-gateway’ is configured, and it should be in global config mode…. B is right answer, i ran it in PT…..
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Q6 : I’m a little bit surprised : CRC errors are mainly due to damaged or too short or noise polluted cable.
Collisions and late collisions seem to me more a proof of duplex mismatch than CRC errors.
But effectively, if the only proposed answers do not talk about media quality, ….
Q10 : I think the telnet’s connection failure should come from host C and not from host B, because host C has not the right Gateway : according to me, there’s an error in the question.
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Q4 was on 12th May
Q1$, 9 & 10 today passed 985 thank you 9tut it’s easy just learn all the qst here n u will pass for sure. U don’t need dumbs
Q10: the host B can make telnet to the SW If we assign a gateway to the SW that gateway is the same of vlan1 gateway…and host A from vlan1 like SW Because of that he can telnet the SW.
Q6 & Q8 5/25
Answer to question 10 should be “D” as switch management IP address is in VLAN 1 we can confirm that from the router subinterface. Once you put address in Vlan 1 and change the port from VLAN 32 to 1 purpose will be solved.