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CCNA PreTest

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Pretest for CCNA
michael smith0754
Test por michael smith0754, actualizado hace más de 1 año
michael smith0754
Creado por michael smith0754 hace más de 8 años
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Resumen del Recurso

Pregunta 1

Pregunta
Which three statements are true about the operation of a full-duplex Ethernet network?
Respuesta
  • There are no collisions in full-duplex mode.
  • A dedicated switch port is required for each full-duplex node.
  • The host network card and the switch port must be capable of operating in full-duplex mode.
  • All of the above.

Pregunta 2

Pregunta
Which OSI layer header contains the address of a destination host that is on another network?
Respuesta
  • application
  • session
  • transport
  • network
  • data link
  • physical

Pregunta 3

Pregunta
Which layer of the TCP/IP stack combines the OSI model physical and data link layers?
Respuesta
  • Internet layer
  • transport layer
  • application layer
  • network access layer

Pregunta 4

Pregunta
Which protocol uses a connection-oriented service to deliver files between end systems?
Respuesta
  • TFTP
  • DNS
  • FTP
  • SNMP
  • RIP

Pregunta 5

Pregunta
If the hubs in the graphic were replaced by switches, what would be virtually eliminated?
Image:
f7a0968a-5730-4f76-b9bc-2fd48f5eb4ea (image/png)
Respuesta
  • broadcast domains
  • repeater domains
  • Ethernet collisions
  • signal amplification
  • Ethernet broadcasts

Pregunta 6

Pregunta
If host A sends an IP packet to host B, what will the source physical address be in the frame when it reaches host B?
Image:
6a1727e6-f47c-4e4a-acae-5dcb6cbe61b0 (image/png)
Respuesta
  • 10.168.10.99
  • 10.168.11.88
  • A1:A1:A1:A1:A1:A1
  • B2:B2:B2:B2:B2:B2
  • C3:C3:C3:C3:C3:C3
  • D4:D4:D4:D4:D4:D4

Pregunta 7

Pregunta
HostX is transferring a file to the FTP server. Point A represents the frame as it goes toward the Toronto router. What will the Layer 2 destination address be at this point?
Image:
1fb5af99-bfa2-42f6-a046-7126bbc7959b (image/png)
Respuesta
  • abcd.1123.0045
  • 192.168.7.17
  • aabb.5555.2222
  • 192.168.1.1
  • abcd.2246.0035

Pregunta 8

Pregunta
Which network device functions only at Layer 1 of the OSI model?
Respuesta

Pregunta 9

Pregunta
The host in Kiev sends a request for an HTML document to the server in Minsk. What will be the source IP address of the packet as it leaves the Kiev router?
Image:
f4e029a0-033d-479d-a0de-d18983b7725b (image/png)
Respuesta
  • 10.1.0.1
  • 10.1.0.5
  • 10.1.0.6
  • 10.1.0.14
  • 10.1.1.16
  • 10.1.2.8

Pregunta 10

Pregunta
As packets travel from Mary to Robert, which three devices will use the destination MAC address of the packet to determine a forwarding path? (Choose three.)
Image:
dff876c4-7db5-4032-9593-4b822feb7d4d (image/png)
Respuesta
  • Hub1
  • Switch1
  • Router1
  • Switch2
  • Router2
  • Switch3

Pregunta 11

Pregunta
Mary is sending an instant message to Robert. The message will be broken into a series of packets that will traverse all network devices. What addresses will populate these packets as they are forwarded from Router1 to Router2?
Image:
ee9b3f96-ad8d-4685-a32d-9c4176c5ab6b (image/png)
Respuesta

Pregunta 12

Pregunta
A network device needs to be installed in the place of the icon labeled Network Device to accommodate a leased line attachment to the Internet. Which network device and interface configuration meets the minimum requirements for this installation?
Image:
620fe076-6586-44df-bdc5-c43953957f26 (image/png)
Respuesta
  • a router with two Ethernet interfaces
  • a switch with two Ethernet interfaces
  • a router with one Ethernet and one serial interface
  • a switch with one Ethernet and one serial interface
  • a router with one Ethernet and one modem interface

Pregunta 13

Pregunta
Which transport layer protocol provides best-effort delivery service with no acknowledgment receipt required?
Respuesta
  • HTTP
  • IP
  • TCP
  • Telnet
  • UDP

Pregunta 14

Pregunta
Which layer of the OSI model controls the reliability of communications between network devices using flow control, sequencing and acknowledgments?
Respuesta
  • Physical
  • Data-link
  • Transport
  • Network

Pregunta 15

Pregunta
Which statements are true regarding ICMP packets? (Choose two.)
Respuesta
  • They acknowledge receipt of TCP segments.
  • They guarantee datagram delivery.
  • TRACERT uses ICMP packets.
  • They are encapsulated within IP datagrams.
  • They are encapsulated within UDP datagrams.

Pregunta 16

Pregunta
Which statements accurately describe CDP? (Choose three.)
Respuesta
  • CDP is an IEEE standard protocol.
  • CDP is a Cisco proprietary protocol.
  • CDP is a datalink layer protocol.
  • CDP is a network layer protocol.
  • CDP can discover directly connected neighboring Cisco devices.
  • CDP can discover Cisco devices that are not directly connected.

Pregunta 17

Pregunta
How does a switch differ from a hub?
Respuesta
  • A switch does not induce any latency into the frame transfer time.
  • A switch tracks MAC addresses of directly-connected devices.
  • A switch operates at a lower, more efficient layer of the OSI model.
  • A switch decreases the number of broadcast domains.
  • A switch decreases the number of collision domains.

Pregunta 18

Pregunta
What must occur before a workstation can exchange HTTP packets with a web server?
Respuesta
  • A UDP connection must be established between the workstation and its default gateway.
  • A UDP connection must be established between the workstation and the web server.
  • A TCP connection must be established between the workstation and its default gateway.
  • A TCP connection must be established between the workstation and the web server.
  • An ICMP connection must be established between the workstation and its default gateway.
  • An ICMP connection must be established between the workstation and the web server.

Pregunta 19

Pregunta
How does TCP differ from UDP? (Choose two.)
Respuesta
  • TCP provides best effort delivery.
  • TCP provides synchronized communication.
  • TCP segments are essentially datagrams.
  • TCP provides sequence numbering of packets.
  • TCP uses broadcast delivery.

Pregunta 20

Pregunta
A workstation has just resolved a browser URL to the IP address of a server. What protocol will the workstation now use to determine the destination MAC address to be placed into frames directed toward the server?
Respuesta
  • HTTP
  • DNS
  • DHCP
  • RARP
  • ARP

Pregunta 21

Pregunta
Host A is sending a packet to Host B for the first time. What destination MAC address will Host A use in the ARP request?
Image:
4bec7121-4289-4594-851a-dd106a128ffc (image/png)
Respuesta
  • 192.168.0.1
  • 172.16.0.50
  • 00-17-94-61-18-b0
  • 00-19-d3-2d-c3-b2
  • ff-ff-ff-ff-ff-ff

Pregunta 22

Pregunta
What are two common TCP applications? (Choose two.)
Respuesta
  • TFTP
  • SMTP
  • SNMP
  • FTP
  • DNS

Pregunta 23

Pregunta
SwitchA receives the frame with the addressing shown. According to the command output also shown in the exhibit, how will SwitchA handle this
Image:
388a28b5-e409-4381-aafe-5e48f232f110 (image/png)
Respuesta
  • It will drop the frame.
  • It will forward the frame out port Fa0/6 only.
  • It will flood the frame out all ports.
  • It will flood the frame out all ports except Fa0/3.
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