DHCP Group of Four Questions
Refer to the exhibit. Using the information shown, answer the question
Question 1:
All hosts in the networks have been operational for several hours when the DHCP server goes down. What happens to the hosts that have obtained service from the DHCP server?
A – The hosts will not be able to communicate with any other hosts.
B – The hosts will continue to communicate normally for a period of time.
C – The hosts will be able to communicate with hosts outsides their own network
D – The hosts will only be able to communicate with other hosts by IP address not by hostname
Answer: B
Explanation:
DHCP often uses dynamic allocation mechanism to save IP addresses, which assigns an IP address to a client for a limited period of time. So when the DHCP server goes down, that client can still use the allocated IP address for a period of time
Question 2:
What is the purpose of the DHCP server?
A – to provide storage for email
B – to translate URLs to IP addresses
C – to translate IPv4 addresses to MAC addresses
D – to provide an IP configuration information to hosts
Answer: D
Explanation:
The main purpose of the DHCP server is to provide IP configuration parameters to hosts such as the default gateway, domain name, Domain Name System (DNS) server…
Question 3:
How is the message sent from a PC2 when is first powers on and attempts to contact the DHCP Server?
A – Layer 3 unicast
B – Layer 3 broadcast
C – Layer 3 multicast
D – Without any Layer 3 encapsulation
Answer: B
Explanation:
When a client boots up for the first time, it transmits a DHCPDISCOVER message on its local physical subnet. Because the client has no way of knowing the subnet to which it belongs, the DHCPDISCOVER is an all-subnets broadcast (destination IP address of 255.255.255.255, which is a layer 3 broadcast address). The client does not have a configured IP address, so the source IP address of 0.0.0.0 is used.
Question 4:
What is the default behavior of R1 when PC1 requests service from DHCP server?
A – Drop the request
B – Broadcast the request to R2 and R3
C – Forward the request to R2
D – Broadcast the request to R2, R3 and ISP
Answer: A
Explanation:
When PC1 requests service from DHCP server (for example, it requests an IP address), it sends a broadcast packet. But R1 router, by default, will not forward broadcast packet and drop it.
For your information, if you want to use the DHCP server from another network (like in this case) you can use the ip helper-address command which will make the router forward UDP broadcasts.
In the real exam you will be taken to a LAB simulation environment but it is, in fact, just a group of 4 multi-choice questions!
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Which statement is correct regarding the operation of DHCP?
if an address conflict is detected, the address is removed from the pool and an administator must resolve the conflict
if an address conflict is detected, the address is removed from the pool for an amount of time configurable by the administror
Bit Confused, answer is different
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if two or more devices are using the same IP then that IP is removed from the pool. the admin has to /release and /renew the hosts
Thanks “Xallax”
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While communication between host 1 and host2 over the point-To-Point WAN, which protocol or technology is represented by a dashed line A?
A) IP
B) T1
C) PPP
D) IEEE 802.3
I am bit confused, it should be A) IP some dump had D) IEEE 802.3 because in WAN Ethernet is not used.
@avi
http://www.9tut.net/icnd2/miscellaneous-questions
computers “talk” using IP
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Given the HOST A and HOST B are in different networks. When HOST A is trying to communicate with HOST B, which step will HOST A take first?
a) Create an ARP request to get a MAC address for HOST B.
b) Send the data frames to the default gateway.
@avi
MAC is used only locally. option a is ruled out.
Thanks again
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Concentrate on the following:
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2) Subnet (30%)
3) Lab Sim (25%)
4) Rest Of the material (30%)
Sharing is powerful!
which option is used to check at the receiving end to see if the data is unaltered?
a) encryption
b) key exchange
c) data integrity
d) encapsulation
if anybody know plzzz share it … this was in ma exam
@maggie
a) encryption – data is secure.
b) key exchange – both sides (sender/receiver) are able to decrypt the data
c) data integrity – data arrived well (correct answer for your questions)
d) encapsulation – the process data goes as it passes down the OSI layers
(data -> segments -> packets -> frames -> bits)
@xallax
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Hey can some please explain question # 4. If R1 is configured as a DHCP server wouldn’t it send a Unicast message back to PC1. Why would it drop the request.
what is the basic defference between lan and wan?
@sandeep
lan – local area <- this is here
wan – wide area <- this connects to a far away point
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Understand DHCP in Cisco
http://info-it.net/protocols/dhcp.html
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quick question, in the real exam, do you require to check the config before answering the questions or it is a HotSpot ?
Thanks.,
While communication between host 1 and host2 over the point-To-Point WAN, which protocol or technology is represented by a dashed line A?
A) IP
B) T1
C) PPP
D) IEEE 802.3
plz someone give me the correct answer for this question
thanks
ppp is the only WAN PROTOCOL IN THAT LIST.SO UR ANSWER IS PPP
PLS CAN SOMONE GIVE ME ANSWER TO THIS QUESTION
IN WAT CASE IS A MULTIPLE COPY OF A FRAME SENT TO A HOST?
1.IN AN IMPROPERLY IMPLEMENTED REDUNDANT LINK
2.IN A DUAL RING TOPOLOGY
@mike: Your question was answered at http://www.9tut.com/ccna-switch-questions-2 (Question 1)
@jawad
here’s the source of your question:
http://www.9tut.net/icnd2/miscellaneous-questions
the answer is A. IP.
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QUESTION NO: 17
QUESTION NO: 18 DRAG DROP
QUESTION NO: 42
QUESTION NO: 70
QUESTION NO: 75
QUESTION NO: 78
QUESTION NO: 85
QUESTION NO: 92
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QUESTION NO: 154 <<<<<<<<<<<<<<<<<<<<<<<<<<
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QUESTION NO: 169
QUESTION NO: 170 ********
QUESTION NO: 174
QUESTION NO: 195******
QUESTION NO: 198*******
QUESTION NO: 204
QUESTION NO: 208
QUESTION NO: 211
QUESTION NO: 220
QUESTION NO: 237
QUESTION NO: 267
QUESTION NO: 269
QUESTION NO: 287
QUESTION NO: 353
QUESTION NO: 361
QUESTION NO: 365
QUESTION NO: 371
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I came across this question (which is the same with a comment from above but with more options ).
Given that Host A and Host B are in different networks. When Host A is trying to communicate with Host B, which step will Host A take first?
A. Send a TCP SYN and wait for the SYN ACK with the IP address of Host B.
B. Drop the data.
C. Create an ARP request to get a MAC address for Host B.
D. Send the data frames to the default gateway.
Answer: C
I think C is wrong because it is stated that Host A and B are on different networks. If host A will create an ARP request it would be for the MAC address of the default gateway. So I think the better answer is D assuming that Host A already knows the MAC address of the default gateway. What do you guys think?
The data frames would be sent to the default gateway, the router would send the ARP if it didn’t have it.
Which statement is correct regarding the operation of DHCP?
if an address conflict is detected, the address is removed from the pool and an administator must resolve the conflict
if an address conflict is detected, the address is removed from the pool for an amount of time configurable by the administror
plzz can anyone help me?? my exam on wednesday isa
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@aya
Your 1st answer, its also answered here:-
http://www.9tut.com/ccna-dhcp-questions
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@vanesa; when a local host wants to send a packet to a remote host on a different subnet, the local host creates an arp request to get the mac of the remote host………the router receives the request and reply with it’s own mac address…….that is known as proxy arp…..does anybody think otherwise?
@ifyllenium
@vanesa
Guys, keep it simple.
The router will always send any packets or data frames going to an outside network(remote network) to the default gateway.
The default gateway acts as the router’s eye to the outside world.(GATEWAY)
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which command helps a network administrator to manage memory by displaying flash memory and NVRAM utilization
a.show secure
b.show file systems
c.show version
d.show flash
plz replay
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see http://www.9tut.com/ccna-cisco-ios-questions-3
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In the real exam you will be taken to a LAB simulation environment but it is, in fact, just a group of 4 multi-choice questions!
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