200-125 - Cisco Practice Exam Questions - 100% Free

Question No : 1 - Topic 1

Where does routing occur within the DoD TCP/IP reference model?

A. application
B. internet
C. network
D. transport

Answer : B

Explanation: The picture below shows the comparison between TCP/IP model & OSI model. Notice that the Internet Layer of TCP/IP is equivalent to the Network Layer which is responsible for routing decision.

Question discussion

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Deepakunde

C Network layer

JimmySemenya

wrong. It is the internet

Shahjahani0124

Jimmy is Absolutely correct

Ysan89

Esta pregunta sale en el examen

alyamani12

Internet its the correct answer

test51

Jimmy is correct

hgonzalez

In the TCP/IP model the routing occur in the Internet layer

Dox

Internet Layer of TCP/IP is equivalent to the Network Layer which is responsible for routing decision.

gfermino

Na camada de internet, no qual equivale a camada de rede do modelo OSI onde os pacotes são enviados para a rede.

gfermino

The routing occur in the Internet layer.

gfermino

occur in the Internet layer

Karo

C. network layer

Rarsa

B internet layer

anup4u

internet layer

Yasir88

B. internet

amit_bajaj

B is the right answer

hoepers

B - Internet layer in TCP MODEL

wizardxp

C internet layer

waqas786

the answer is b

hm6722

B internet layer

Mahdi222

B Internet is equal to network layer at OSI where routing occurs

SimonJones

B. Internet layer

mansour404

internet layer

e_goodwin

B Internet layer within the TCP/IP model.

bnachrl

The answer is B Reason: This question is asking about the TCP/IP model, not the OSI model. OSI is Network, TCP/IP calls it Internet.

DebanandaSahu

B Network Layer

Valle

Occur on C. network

ManishaArumugam

B internet layer

essome

B. Internet layer

essome

I want to know where does routing occurs whitin the DoD OSI reference model

alhanouf

b- internet TCP/IP model before OSI model

Kiran333

C- network layer

Shahjahani0124

Answer should be B

Rislam0070

In fact, Routing takes place in "Network Layer" in OSI Reference Model which is "Internet Layer' in DoD TCP/IP Reference Model.

jahanzibmomand

in my point of view the answer is D

sony1

internet layer of tcp/ip is equivalent to network layer of the OSI model

sybox

A. application

Ashit

Internet layer

jwargz

internet corresponds to the Network layer in the OSI Model

riopurnama

C Network Layer

localfoodideas

B internet layer

angysan

internet

kikioyewole

C. Internet Layer

bandarsadik

pandi

B INTERNET it my ansser ok

espacio411

internet

espacio411

Question No : 2 - Topic 1

Which of the following statements describe the network shown in the graphic? (Choose
two.)

A. There are two broadcast domains in the network.
B. There are four broadcast domains in the network.
C. There are six broadcast domains in the network.
D. There are four collision domains in the network.
E. There are five collision domains in the network.
F. There are seven collision domains in the network.

Answer : A,F

Explanation: Only router can break up broadcast domains so in the exhibit there are 2 broadcast domains: from e0 interface to the left is a broadcast domain and from e1 interface to the right is another broadcast domain ->. Both router and switch can break up collision domains so there is only 1 collision domain on the left of the router (because hub doesnt break up collision domain) and there are 6 collision domains on the right of the router (1 collision domain from e1 interface to the switch + 5 collision domains for 5 PCs in Production) ->.

Question discussion

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cscanlan_el

There are two broadcast domains in the network. There are seven collision domains in the network

Plague.Jester@Yahoo.com

I'm a bit lost on this one. There are only three collision domains in this picture. The hub on the left makes for one whole collision domain for the right side (as mentioned in the picture). There is then one collision domain between the router on the switch on the right. And then all five computers are somehow connected to a single cable coming into the switch, making for one collision domain for all five of those PCs as well. The collision is on the wire, not on the device. So one wire leaving the switch means one collision domain.

amell

it´s a tricky question, on the right you have 5 PC´s so you gotta have one port for each, plus the connection to the router makes it 6 ports in total

mansour404

two broadcast domains and 7 collision domains

essome

two broadcast domains and 7 collision domain

sony1

Each port of the switch is a collision domain and the hub only have 1 collision domain, So they are 6 ports on the switch which make it 6 collisions on the switch side and 1 on the hub side. Absolutely correct

chanduniki

* hub acts as single broadcast domain and single collision domain ,so it doesn't matter have many ports it include * switch by default having one broadcast domain and port per collision domain it means one port = one collision domain * in router port per broadcast domain in that fig shows us router with two ports e0 and e1 this two ports are different broadcast domains and e0 port connected to the hub so that entire connectivity comes under single broadcast domain and collision domain because of the hub nature . e1 interface connected to the switch port " e1 to switch connected interface comes under one collision domain and 5 individual pc's and individual collision domains and so there totally two broadcast domains and seven collision domains

JinTak

Trick question: there is a HUB on the left, and a SWITCH on the right. There look sufficiently alike that you would think they are both switches if you AREN'T CAREFUL!

methay

A There are two broadcast domains in the network

k80chavez@gmail.com

didnt catch that that was a hub :(

essa_khaleel

A ther are two brodcast domains in the network

alphinjn

Hosts in Sales side are connected on a Hub which always works as a single Broadcast and collision domain, no matter how many devices are connected or how many ports it has. On the Production side Hosts are connected to a switch, which works as a single broadcast domain by default as all ports are participating in VLAN1 and each ports are separate collision domains by design. As per the diagram there are 5 hosts and a router connected to the switch. So in total there are 2 Broadcast domains and 7 Collision domains.

helder

The line A and D describes very well what we have there. Two broadcast domains and four colision domains.

amit_bajaj

A AND F both are correct

wizardxp

There are two broadcast domains in the network and there are seven collision domains in the network

Mahdi222

A two broadcast domains

SimonJones

A & F. There are two broadcast domain if no VLANs are confiigured on the switch and seven collision domains.

zmanvideoEL

A. There are two broadcast domains in the network F. There are seven collision domains in the network.

Valle

A. There are two broadcast domains in the network. There are seven collision domains in the network.

ak47inusa

A. There are two broadcast domains in the network F. There are seven collision domains in the network.

ManishaArumugam

A n F

Kiran333

A and f are the correct

Shahjahani0124

Answer to my recollection should be A and F

kikioyewole

A&F. There are two broadcast domains in the network, There are seven collision domains in the network.

pandi

A. There are two broadcast domains in the network and F. There are seven collision domains in the network

Question No : 3 - Topic 1

A network interface port has collision detection and carrier sensing enabled on a shared
twisted pair network. From this statement, what is known about the network interface port?

A. This is a 10 Mb/s switch port.
B. This is a 100 Mb/s switch port.
C. This is an Ethernet port operating at half duplex.
D. This is an Ethernet port operating at full duplex.
E. This is a port on a network interface card in a PC.

Answer : C

Explanation: Modern Ethernet networks built with switches and full-duplex connections no longer utilize CSMA/CD. CSMA/CD is only used in obsolete shared media Ethernet (which uses repeater or hub).

Question discussion

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gfermino

This is an Ethernet port operating at half duplex.

wizardxp

this port is operated half duplex

SimonJones

D. This is an Ethernet port operating at full duplex

mansour404

This is an Ethernet port operating at half duplex.

ceros399

C. Operating at Half-Duplex

zmanvideoEL

C. This is an Ethernet port operating at half duplex.

zmanvideoEL

C. This is an Ethernet port operating at half duplex.

Valle

D. This is an Ethernet port operating at full duplex.

ManishaArumugam

okamiab

This is a 10Mb/s switch port, operating in half duplex. A, C

nhkhan75

C IS THE CORRECT ANS

n0ttsweet

priska2903

C: This is an Ethernet port operating at half duplex.

Question No : 4 - Topic 1

Host 1 is trying to communicate with Host 2. The e0 interface on Router C is down.

Which of the following are true? (Choose two.)

A. Router C will use ICMP to inform Host 1 that Host 2 cannot be reached.
B. Router C will use ICMP to inform Router B that Host 2 cannot be reached.
C. Router C will use ICMP to inform Host 1, Router A, and Router B that Host 2 cannot be reached.
D. Router C will send a Destination Unreachable message type.
E. Router C will send a Router Selection message type.
F. Router C will send a Source Quench message type.

Answer : A,D

Explanation: Host 1 is trying to communicate with Host 2. The e0 interface on Router C is down. Router C will send ICMP packets to inform Host 1 that Host 2 cannot be reached.

Question discussion

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RCthrunder

C. Router C will use ICMP to inform Host 1, Router A, and Router B that Host 2 cannot be reached.

gfermino

Router C will use ICMP to inform Router B that Host 2 cannot be reached and will send a Unreachable message type

cscanlan_el

Router C will use ICMP to inform Host 1 that Host 2 cannot be reached. Router C will send a Destination Unreachable message type

RCthrunder

C. Router C will use ICMP to inform Host 1, Router A, and Router B that Host 2 cannot be reached.

dbakathaillist

What confuses me here is how can router C send ICMP packets back if the interface is down?

jlprdg0001

Interface is down but Router C is on. It tests e0 interface and advise about its status.

phyro74

I think the question misleading. Although it state that "Host 1 is trying to communicate with Host 2", it did not state if it is icmp, tcp or udp. Naturally Host 1 will not send ICMP packets without triggering ping command of sort. Thus to say that router C will reply to Host 1 via icmp is misleading. But since it state that there is two answers, A and C is the best out of the 6.

RobertScott

ICMP is always used to communicate errors and other messages regarding network and host availability. ICMP has many more uses than just PING or Traceroute

Shaurobu

The answer is c

muruganandam

Host 1 is trying to communicate with Host 2. Its packets travel from routerA to routerB and router C. Router C (the last router) then broadcast an ARP frame onto the network looking for the MAC address of Host 2. If Host 2 can answer then router C can forward the frame. But e0 interface is down so no answer from Host 2 will be received so router C will send a Destination Unreachable message back to the originator. This message also informs that the middle network is still working correctly. Also notice that the Destination Unreachable message is an ICMP message.

net.masker

Router C will inform host 1 that host 2 cannot be reached. Router C will send a Destination Unreachable Message Type

wizardxp

Router C will use ICMP to inform Host 1 that Host 2 cannot be reached

zmanvideoEL

A. Router C will use ICMP to inform Host 1 that Host 2 cannot be reached. D. Router C will send a Destination Unreachable message type.

ManishaArumugam

D and A

kikioyewole

A&D Router C will use ICMP to inform Host 1 that Host 2 cannot be reached. Router C will send a Destination Unreachable message type.

Question No : 5 - Topic 1

Refer to the exhibit.

Based on the information given, which switch will be elected root bridge and why?

A. Switch A, because it has the lowest MAC address
B. Switch A, because it is the most centrally located switch
C. Switch B, because it has the highest MAC address
D. Switch C, because it is the most centrally located switch
E. Switch C, because it has the lowest priority
F. Switch D, because it has the highest priority

Answer : E

Explanation: To elect the root bridge in the LAN, first check the priority value. The switch having the lowest priority will win the election process. If Priority Value is the same then it checks the MAC Address; the switch having the lowest MAC Address will become the root bridge. In this case, switch C has the lowest MAC Address so it becomes the root bridge.

Question discussion

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pam

Answer E is correct and I follow your explanation regarding Priority. In the second case where Priority is the same, I think the last sentence should say, "In this case, switch A has the lowest MAC Address so it becomes the root bridge."

channa.tep@gmail.com

switch has the lowest priority 1,

hgonzalez

The mac address is not evaluate Since having lower priority no longer matters the value of the mac address

Chieftwobits

Can you set the priority to 1? I think it has to be from 0 to 61440 in increments of 4096. So, 0 4096 8192 etc. IS this the Prio.Nbr., ie. 128.1?

gfermino

E. Switch C, because it has the lowest priority

muteka2002

Switch C has the lowest priority of 1 so it is elected as the root bridge

net.masker

Switch C, because it has the lowest priority. You always want to make sure that you check the priority before anything else. If the priority matches that of another switch, you will then look at the switch with the lower MAC address which will then define the elected root bridge. The answer is E.

wizardxp

E switch C, because it has the lowest priority

itspitts

I understand Lowest Priority is the answer, however if Priority is the same, you would choose the lowest mac address. Sw-C has the highest mac add(E is greater than D), is there something i'm not understanding about the second part of the answer?? It states C would still be the root bridge based on macs.

ManishaArumugam

Switch C because it has the lowest priority

okamiab

Switch C will be the root bridge E

Maraka

kindly help me understand how you get the lowest mac addresses.

Dabeeee0123

E. Lowest priority always gets elected as root bridge

umar

Sorry you all have the wrong answer. The answer should be A the lowest Mac address it cannot be E as you can not have a priority of 1 it has to be 0 or increments of 4096

mondher

bravo........

beratg

It is true that you cannot give the command with priority 1, but it you give the priority 0, then on show spanning-tree command it will show that it is priority 1. So the correct answer is E.

Chieftwobits

That would be true for PVST since it adds the VLAN number to the set priority, however with MST is will show a 0.

benny

Obinna

please can I use this material to study for my exam?

pandi

D. Switch C, because it is the most centrally located switch

Question No : 6 - Topic 1

Which layer in the OSI reference model is responsible for determining the availability of the
receiving program and checking to see if enough resources exist for that communication?

A. transport
B. network
C. presentation
D. session
E. application

Answer : E

Explanation: This question is to examine the OSI reference model. The Application layer is responsible for identifying and establishing the availability of the intended communication partner and determining whether sufficient resources for the intended communication exist.

Question discussion

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lammie

That is a correct answer

gfermino

E. application

wizardxp

D session layer

farrukh_nk

E Application

ManishaArumugam

Application layer

okamiab

E. Application layer

sony1

application layer

benkason

The Correct Answer is E.

Question No : 7 - Topic 1

Refer to the graphic.

Host A is communicating with the server. What will be the source MAC address of the
frames received by Host A from the server?

A. the MAC address of router interface e0
B. the MAC address of router interface e1
C. the MAC address of the server network interface
D. the MAC address of host A

Answer : A

Explanation: Whereas switches can only examine and forward packets based on the contents of the MAC header, routers can look further into the packet to discover the network for which a packet is destined. Routers make forwarding decisions based on the packet's network- layer header (such as an IPX header or IP header). These network-layer headers contain source and destination network addresses. Local devices address packets to the router's MAC address in the MAC header. After receiving the packets, the router must perform the following steps: 1. Check the incoming packet for corruption, and remove the MAC header. The router checks the packet for MAC-layer errors. The router then strips off the MAC header and examines the network-layer header to determine what to do with the packet. 2. Examine the age of the packet. The router must ensure that the packet has not come too far to be forwarded. For example, IPX headers contain a hop count. By default, 15 hops is the maximum number of hops (or routers) that a packet can cross. If a packet has a hop count of 15, the router discards the packet. IP headers contain a Time to Live (TTL) value. Unlike the IPX hop count, which increments as the packet is forwarded through each router, the IP TTL value decrements as the IP packet is forwarded through each router. If an IP packet has a TTL value of 1, the router discards the packet. A router cannot decrement the TTL value to 1 and then forward the packet. 3. Determine the route to the destination. Routers maintain a routing table that lists available networks, the direction to the desired network (the outgoing interface number), and the distance to those networks. After determining which direction to forward the packet, the router must build a new header. (If you want to read the IP routing tables on a Windows 95/98 workstation, type ROUTE PRINT in the DOS box.) 4. Build the new MAC header and forward the packet. Finally, the router builds a new MAC header for the packet. The MA

Question discussion

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gfermino

the MAC address of router interface e0

DiggityDogg

A.the MAC address of router interface e0

wizardxp

A the MAC address of router interface e0

Monty

Incorrect. It has the router egress interface - e1. Double-checked it with packet sniffing.

palavshailesh

A. the MAC address of router interface e0

ManishaArumugam

mac address of router interface e0

okamiab

A. The mac address of Router e0 interface.

alhanouf

A. the MAC address of router interface e0

kikioyewole

Can someone please explain further why the answer to this question is option A, i'm not sure i understand the explanation.

pratik906

the question is regarding the source MAC address of the packet sent by the server to host A. the IP address of the packet does not change but the MAC address keep changing from hop to hop. When the packet is sent from server, the source MAC address if of server and destination MAC address is of router E1 interface (as every interface of router has different MAC address.) Now the router will remove the MAC addresses and replace the source MAC address to it's E0 interface MAC address and destination MAC address to Host A MAC address

primis77

also confirmed with packet capture, it's E1

pratik906

nope, just verified it in packet tracer, the MAC address is of the port from where the packet is leaving i.e. E0

Question No : 8 - Topic 1

A router has two Fast Ethernet interfaces and needs to connect to four VLANs in the local
network. How can you accomplish this task, using the fewest physical interfaces and
without decreasing network performance?

A. Use a hub to connect the four VLANS with a Fast Ethernet interface on the router.
B. Add a second router to handle the VLAN traffic.
C. Add two more Fast Ethernet interfaces.
D. Implement a router-on-a-stick configuration.

Answer : D

Explanation: A router on a stick allows you to use sub-interfaces to create multiple logical networks on a single physical interface.

Question discussion

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gfermino

D. Implement a router-on-a-stick configuration.

DiggityDogg

D. Implement a router-on-a-stick configuration.

wizardxp

D. Implement a router-on-stick configuration

ManishaArumugam

implement a router on a stick configuration

okamiab

D. Implement a router-on-a-stick configuration

alhanouf

D. Implement a router-on-a-stick configuration.

Question No : 9 - Topic 1

Match the terms on the left with the appropriate OSI layer on the right. (Not all options are
used.)

Answer :

Question discussion

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gfermino

networks - packets, IP address, routing - Layer Transport - UDP, segments, windowing

rafvecino

Network layer==>packets,ip adresses,routing. Transport layer==>segments,windowing,udp

DiggityDogg

Network Layer: packets, ip adresses, routing Transport layer: UDP, segments, windowing

jesusdiv18

I missed windowing :(

Bashar

For Network Layer: packets, IP addresses, routing. FOr Transport Layer: UDP, segments, windowing

Tafmuzhari

routing,packets,ip address------------------udp,segments,windowing

Tafmuzhari

ip addresses,packets,routing udp,windowing,segments

ciscogeek

Are these questions actually on the written exam?

ManishaArumugam

packets,IP adresses,routing windowing,segments,UDP

okamiab

Network layer: Packet IP address routing Transport Layer Segments Windowing UDP

Pornchai

packets, IP address, routing UDP segments windowing

juancarlo

networks - packets, IP address, routing - Layer Transport - UDP, segments, windowing.

Question No : 10 - Topic 1

A network administrator is verifying the configuration of a newly installed host by
establishing an FTP connection to a remote server. What is the highest layer of the
protocol stack that the network administrator is using for this operation?

A. application
B. presentation
C. session
D. transport
E. internet
F. data link

Answer : A

Explanation: FTP belongs to Application layer and it is also the highest layer of the OSI model.

Question discussion

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gfermino

A. application

thescript

A. application

ManishaArumugam

Application layer

okamiab

Its the Application layer

alhanouf

A. application

kuma

Application layer

mondher

FOR FTP THE HIGHEST LAYER IS session

Question No : 11 - Topic 1

Refer to the exhibit. Complete this network diagram by dragging the correct device name or
description to the correct location. Not all the names or descriptions will be used.

Answer :

Question discussion

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DiggityDogg

Router, DTE, DCE, Switch, digital line, WAN Service provider network

Tafmuzhari

ROUTER---->DTE----->DCE----->CSU/DSU----->DIGITAL LINE------>WAN SERVICE PROVIDER NETWORK

Tafmuzhari

router,dte,dce,csu/dsu,digital line ,wan service provider network

ManishaArumugam

router,DTE,DCE,CSU/DSU synchronous,digital line,Wan service provider network

okamiab

Router, DTE, DCE, CSU/DSU, Digital Line, WAN Service Provider Network

AOpoku

Router->DTE->DCE->CSU/DSU Synchronous->Digital Line->WAN Service Provider Network

dtanhnetad

Router -> DTE -> DCE -> CSU/DSU Synchrnous -> Digital Line -> WAN Service Provider Network

imoo7aa

Router, DTE, DCE, CSU/DSU Synchronous, Digital Line, WAN Service Provider Network

mohamad.magde

ROUTER---->DTE----->DCE----->CSU/DSU----->DIGITAL LINE------>WAN SERVICE PROVIDER NETWORk

bboomer63

router DTE DCE CSU/DSU Digital line WAN

juancarlo

Router, DTE, DCE, Switch, digital line, WAN Service provider network.

Question No : 12 - Topic 1

A receiving host computes the checksum on a frame and determines that the frame is
damaged. The frame is then discarded. At which OSI layer did this happen?

A. session
B. transport
C. network
D. data link
E. physical

Answer : D

Explanation: The Data Link layer provides the physical transmission of the data and handles error notification, network topology, and flow control. The Data Link layer formats the message into pieces, each called a data frame, and adds a customized header containing the hardware destination and source address. Protocols Data Unit (PDU) on Datalink layer is called frame. According to this question the frame is damaged and discarded which will happen at the Data Link layer.

Question discussion

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Mr_Code

D. Data Link Layer

rugare

Data Link layer: They are two sublayers LLC=Logical Link Control and MAC=Media Access Control. LLC does error correction.

rugare

Also: The key work in this question is the word FRAME: Frames operate at Layer 2 Application=> Data Presentation => Data Session=> Data Transport =>Segment Network => Packets Data link => Frames Physical =>Bits

ManishaArumugam

data link layer

okamiab

Data Link Layer

Question No : 13 - Topic 1

Which of the following correctly describe steps in the OSI data encapsulation process?
(Choose two.)

A. The transport layer divides a data stream into segments and may add reliability and flow control information.
B. The data link layer adds physical source and destination addresses and an FCS to the segment.
C. Packets are created when the network layer encapsulates a frame with source and destination host addresses and protocol-related control information.
D. Packets are created when the network layer adds Layer 3 addresses and control information to a segment.
E. The presentation layer translates bits into voltages for transmission across the physical link.

Answer : A,D

Explanation: The transport layer segments data into smaller pieces for transport. Each segment is assigned a sequence number, so that the receiving device can reassemble the data on arrival. The transport layer also use flow control to maximize the transfer rate while minimizing the requirements to retransmit. For example, in TCP, basic flow control is implemented by acknowledgment by the receiver of the receipt of data; the sender waits for this acknowledgment before sending the next part. The Network layer (Layer 3) has two key responsibilities. First, this layer controls the logical addressing of devices. Second, the network layer determines the best path to a particular destination network, and routes the data appropriately.

Question discussion

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DiggityDogg

B. The data link layer adds physical source and destination addresses and an FCS to the segment.

Mahdy

SEGMENT! That's the trick

Xtremepr0

Wrong... The Data Link layer encapsulates a Packet (coming from network layer) within his L2 Header, not a segment (layer 4, Transport Layer)

Passingccna

I thought it was B and D. Encapsulation happens in both layer, no?

amzandu

B. Encapsulation only happens at the data link layer.

ManishaArumugam

A and D

andre.esquire

Order of encapsulation is important: segment->packet->frame

rituraina

A & D

Question No : 14 - Topic 1

Refer to exhibit:

Which two destination addresses will be used by Host A to send data to Host C? (Choose
two.)

A. the IP address of Switch 1
B. the MAC address of Switch 1
C. the IP address of Host C
D. the MAC address of Host C
E. the IP address of the router's E0 interface
F. the MAC address of the router's E0 interface

Answer : C,F

Explanation: While transferring data through many different networks, the source and destination IP addresses are not changed. Only the source and destination MAC addresses are changed. So in this case Host A will use the IP address of Host C and the MAC address of E0 interface to send data. When the router receives this data, it replaces the source MAC address with its own E1 interfaces MAC address and replaces the destination MAC address with Host Cs MAC address before sending to Host C.

Question discussion

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gfermino

C. the IP address of Host C F. the MAC address of the router's E0 interface

Drew111

Why not the mac address of switch 1?

DiggityDogg

A. the IP address of Switch 1 E. the IP address of the router's E0 interface

andrevitarelli

because you can assume that Hosts and Router are on the same subnet. No VLANs is used, so, only VLAN 1 exists.

Xtremepr0

Layer 2 Addressing is evaluated in a hop by hop basis, so the data exiting from Host A will have, as layer 2 destination address, the Router E0 Mac Address. Then Router will drop the incoming Ethernet Header, and will put his own header with his Mac Address as source, and Switch 2 Mac Address as Destination... Regarding Layer 3 (IP Addressing) this is related to the entire path, so from the begining of the comunication the IP destination remains the same, Host C IP address...

ManishaArumugam

C and F

juancarlo

C. the IP address of Host C and F. the MAC address of the router's E0 interface.

Question No : 15 - Topic 1

What is the difference between a CSU/DSU and a modem?

A. A CSU/DSU converts analog signals from a router to a leased line; a modem converts analog signals from a router to a leased line.
B. A CSU/DSU converts analog signals from a router to a phone line; a modem converts digital signals from a router to a leased line.
C. A CSU/DSU converts digital signals from a router to a phone line; a modem converts analog signals from a router to a phone line.
D. A CSU/DSU converts digital signals from a router to a leased line; a modem converts digital signals from a router to a phone line.

Answer : D

Explanation: CSU/DSU is used to convert digital signals from a router to a network circuit such as a T1, while a modem is used to convert digital signals over a regular POTS line.

Question discussion

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gfermino

D. A CSU/DSU converts digital signals from a router to a leased line; a modem converts digital signals from a router to a phone line. question_answerVIEW ANSWER

kangchenx

D. A CSU/DSU converts digital signals from a router to a leased line; a modem converts digital signals from a router to a phone line.

ManishaArumugam

A CSU/DSU converts digital signals from a router to a leased line; a modem converts digital signals from a router to a phone line.

kidpop1739

D. A CSU/DSU converts digital signals from a router to a leased line; a modem converts digital signals from a router to a phone line.

juancarlo

D. A CSU/DSU converts digital signals from a router to a leased line; a modem converts digital signals from a router to a pots-line.

Cisco 200-125

CCNA Cisco Certified Network Associate CCNA (v3.0)

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Cisco 200-125

CCNA Cisco Certified Network Associate CCNA (v3.0)

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