CCNA PreTest

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Pregunta 1 de 23

Which three statements are true about the operation of a full-duplex Ethernet network?

Selecciona una de las siguientes respuestas posibles:

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.

Explicación

Pregunta 2 de 23

Which OSI layer header contains the address of a destination host that is on another network?

Selecciona una o más de las siguientes respuestas posibles:

application
session
transport
network
data link
physical

Explicación

Pregunta 3 de 23

Which layer of the TCP/IP stack combines the OSI model physical and data link layers?

Selecciona una o más de las siguientes respuestas posibles:

Internet layer
transport layer
application layer
network access layer

Explicación

Pregunta 4 de 23

Which protocol uses a connection-oriented service to deliver files between end systems?

Selecciona una o más de las siguientes respuestas posibles:

TFTP
DNS
FTP
SNMP
RIP

Explicación

Pregunta 5 de 23

If the hubs in the graphic were replaced by switches, what would be virtually eliminated?

Selecciona una o más de las siguientes respuestas posibles:

broadcast domains
repeater domains
Ethernet collisions
signal amplification
Ethernet broadcasts

Explicación

Pregunta 6 de 23

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?

Selecciona una o más de las siguientes respuestas posibles:

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

Explicación

Pregunta 7 de 23

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?

Selecciona una o más de las siguientes respuestas posibles:

abcd.1123.0045
192.168.7.17
aabb.5555.2222
192.168.1.1
abcd.2246.0035

Explicación

Pregunta 8 de 23

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

Selecciona una o más de las siguientes respuestas posibles:

Bridge
HUB
NIC
Router
Switch

Explicación

Pregunta 9 de 23

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?

Selecciona una de las siguientes respuestas posibles:

10.1.0.1
10.1.0.5
10.1.0.6
10.1.0.14
10.1.1.16
10.1.2.8

Explicación

Pregunta 10 de 23

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.)

Selecciona una o más de las siguientes respuestas posibles:

Hub1
Switch1
Router1
Switch2
Router2
Switch3

Explicación

Pregunta 11 de 23

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?

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 12 de 23

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?

Selecciona una de las siguientes respuestas posibles:

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

Explicación

Pregunta 13 de 23

Which transport layer protocol provides best-effort delivery service with no acknowledgment
receipt required?

Selecciona una de las siguientes respuestas posibles:

HTTP
IP
TCP
Telnet
UDP

Explicación

Pregunta 14 de 23

Which layer of the OSI model controls the reliability of communications between network devices
using flow control, sequencing and acknowledgments?

Selecciona una de las siguientes respuestas posibles:

Physical
Data-link
Transport
Network

Explicación

Pregunta 15 de 23

Which statements are true regarding ICMP packets? (Choose two.)

Selecciona una o más de las siguientes respuestas posibles:

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.

Explicación

Pregunta 16 de 23

Which statements accurately describe CDP? (Choose three.)

Selecciona una o más de las siguientes respuestas posibles:

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.

Explicación

Pregunta 17 de 23

How does a switch differ from a hub?

Selecciona una de las siguientes respuestas posibles:

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.

Explicación

Pregunta 18 de 23

What must occur before a workstation can exchange HTTP packets with a web server?

Selecciona una de las siguientes respuestas posibles:

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.

Explicación

Pregunta 19 de 23

How does TCP differ from UDP? (Choose two.)

Selecciona una o más de las siguientes respuestas posibles:

TCP provides best effort delivery.
TCP provides synchronized communication.
TCP segments are essentially datagrams.
TCP provides sequence numbering of packets.
TCP uses broadcast delivery.

Explicación

Pregunta 20 de 23

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?

Selecciona una de las siguientes respuestas posibles:

HTTP
DNS
DHCP
RARP
ARP

Explicación

Pregunta 21 de 23

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?

Selecciona una de las siguientes respuestas posibles:

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

Explicación

Pregunta 22 de 23

What are two common TCP applications? (Choose two.)

Selecciona una de las siguientes respuestas posibles:

TFTP
SMTP
SNMP
FTP
DNS

Explicación

Pregunta 23 de 23

SwitchA receives the frame with the addressing shown. According to the command output also
shown in the exhibit, how will SwitchA handle this

Selecciona una de las siguientes respuestas posibles:

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.

Explicación

Revisar respuesta

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	Creado por michael smith0754 hace más de 10 años

Pretest for CCNA

CCNA PreTest

Pregunta 1 de 23

Which three statements are true about the operation of a full-duplex Ethernet network?

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 2 de 23

Which OSI layer header contains the address of a destination host that is on another network?

Selecciona una o más de las siguientes respuestas posibles:

Explicación

Pregunta 3 de 23

Which layer of the TCP/IP stack combines the OSI model physical and data link layers?

Selecciona una o más de las siguientes respuestas posibles:

Explicación

Pregunta 4 de 23

Which protocol uses a connection-oriented service to deliver files between end systems?

Selecciona una o más de las siguientes respuestas posibles:

Explicación

Pregunta 5 de 23

If the hubs in the graphic were replaced by switches, what would be virtually eliminated?

Selecciona una o más de las siguientes respuestas posibles:

Explicación

Pregunta 6 de 23

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?

Selecciona una o más de las siguientes respuestas posibles:

Explicación

Pregunta 7 de 23

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?

Selecciona una o más de las siguientes respuestas posibles:

Explicación

Pregunta 8 de 23

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

Selecciona una o más de las siguientes respuestas posibles:

Explicación

Pregunta 9 de 23

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?

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 10 de 23

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.)

Selecciona una o más de las siguientes respuestas posibles:

Explicación

Pregunta 11 de 23

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?

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 12 de 23

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?

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 13 de 23

Which transport layer protocol provides best-effort delivery service with no acknowledgment receipt required?

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 14 de 23

Which layer of the OSI model controls the reliability of communications between network devices using flow control, sequencing and acknowledgments?

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 15 de 23

Which statements are true regarding ICMP packets? (Choose two.)

Selecciona una o más de las siguientes respuestas posibles:

Explicación

Pregunta 16 de 23

Which statements accurately describe CDP? (Choose three.)

Selecciona una o más de las siguientes respuestas posibles:

Explicación

Pregunta 17 de 23

How does a switch differ from a hub?

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 18 de 23

What must occur before a workstation can exchange HTTP packets with a web server?

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 19 de 23

How does TCP differ from UDP? (Choose two.)

Selecciona una o más de las siguientes respuestas posibles:

Explicación

Pregunta 20 de 23

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?

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?

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?

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?

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.)

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?

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?

Which transport layer protocol provides best-effort delivery service with no acknowledgment
receipt required?

Which layer of the OSI model controls the reliability of communications between network devices
using flow control, sequencing and acknowledgments?

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?

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?

SwitchA receives the frame with the addressing shown. According to the command output also
shown in the exhibit, how will SwitchA handle this