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1/13 Szoftverfejlesztés > Network essentials 1 > Flashcards

Network essentials 1 Flashcards

Ez angol lesz sajnos, nincs idegzetem még fordítgatni is

1
Q

During a routine inspection, a technician discovered that software that was installed on a computer was secretly collecting data about websites that were visited by users of the computer. Which type of threat is affecting this computer?

A

Spyware

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2
Q

Which term refers to a network that provides secure access to the corporate offices by suppliers, customers and collaborators?

A

extranet

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3
Q

A large corporation has modified its network to allow users to access network resources from their personal laptops and smart phones. Which networking trend does this describe?

A

bring your own device

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4
Q

What is an ISP?

A

It is an organization that enables individuals and businesses to connect to the Internet.

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5
Q

Match the requirements of a reliable network with the supporting network architecture. (Not all options are used.)

A

Fault tolerance - Provide redundant links and devices
Scalability - Expand the network without degrading the service for exissting users.
Security - Protect the network from unauthorized access.

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6
Q

An employee at a branch office is creating a quote for a customer. In order to do this, the employee needs to access confidential pricing information from internal servers at the Head Office. What type of network would the employee access?

A

an intranet

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7
Q

Which statement describes the use of powerline networking technology?

A

A device connects to an existing home LAN using an adapter and an existing electrical outlet.

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8
Q

A networking technician is working on the wireless network at a medical clinic. The technician accidentally sets up the wireless network so that patients can see the medical records data of other patients. Which of the four network characteristics has been violated in this situation?

A

security

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9
Q

Match each characteristic to its corresponding Internet connectivity type. (Not all options are used.)

A

DSL - high bandwidth connection that runs over telephone line
Dialup telephone - typically has very low bandwith
Satellite -not suited for heavily wooded areas
Cable - uses coaxial cable as a medium

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10
Q

What two criteria are used to help select a network medium from various network media? (Choose two.)

A

1.the distance the selected medium can successfully carry a signal
2.the environment where the selected medium is to be installed

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11
Q

What type of network traffic requires QoS?

A

video conferencing

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12
Q

A user is implementing security on a small office network. Which two actions would provide the minimum security requirements for this network? (Choose two.)

A
  1. implementing a firewall
  2. installing antivirus software
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13
Q

Passwords can be used to restrict access to all or parts of the Cisco IOS. Select the modes and interfaces that can be protected with passwords. (Choose three.)

A
  1. VTY interface
  2. console interface
  3. privileged EXEC mode
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14
Q

Which interface allows remote management of a Layer 2 switch?

A

the switch virtual interface

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15
Q

What function does pressing the Tab key have when entering a command in IOS?

A

It completes the remainder of a partially typed word in a command.

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16
Q

While trying to solve a network issue, a technician made multiple changes to the current router configuration file. The changes did not solve the problem and were not saved. What action can the technician take to discard the changes and work with the file in NVRAM?

A

Issue the reload command without saving the running configuration.

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17
Q

An administrator uses the Ctrl-Shift-6 key combination on a switch after issuing the ping command. What is the purpose of using these keystrokes?

A

to interrupt the ping process

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18
Q

Refer to the exhibit. A network administrator is configuring access control to switch SW1. If the administrator uses a console connection to connect to the switch, which password is needed to access user EXEC mode? (itt lenne egy kép)

A

lineconin

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19
Q

A technician configures a switch with these commands: (router config 3 ip címzős sora van a képen)What is the technician configuring?

A

SVI

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20
Q

Which command or key combination allows a user to return to the previous level in the command hierarchy?

A

exit

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21
Q

What are two characteristics of RAM on a Cisco device? (Choose two.)

A
  1. The configuration that is actively running on the device is stored in RAM.
  2. The contents of RAM are lost during a power cycle.
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22
Q

Which two host names follow the guidelines for naming conventions on Cisco IOS devices? (Choose two.)

A
  1. RM-3-Switch-2A4
  2. SwBranch799
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23
Q

How is SSH different from Telnet?

A

SSH provides security to remote sessions by encrypting messages and using user authentication. Telnet is considered insecure and sends messages in plaintext.

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24
Q

An administrator is configuring a switch console port with a password. In what order will the administrator travel through the IOS modes of operation in order to reach the mode in which the configuration commands will be entered? (Not all options are used.)

A

First mode: User EXEC mode
2. Privileged EXEC mode
3. Global configuration mode
4.(final) line config mode

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25
Q

What are three characteristics of an SVI? (Choose three.)

A

1.It is not associated with any physical interface on a switch.
2.It provides a means to remotely manage a switch.
3.It is associated with VLAN1 by default.

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26
Q

What command is used to verify the condition of the switch interfaces, including the status of the interfaces and a configured IP address?

A

show ip interface brief

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27
Q

Match the description with the associated IOS mode. (Not all options are used.)

A

User EXEC mode: limited number of basic monitoring commands; the first entrance into the CLI of an IOS device

privilieged EXEC mode: accessed by entering the enable command; identified by prompt ending with the # character

global config mode: changes made affect the operation of the device as a whole; accessed by entering the configure terminal command

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28
Q

Match the definitions to their respective CLI hot keys and shortcuts. (Not all options are used.)

A

Displays the next screen : space bar

scrolls backwards through previously enterd commands: up arrow

provides context-sensitive help: ?

completes abbreviated commands and parameters: tab

aborts commands such as trace and ping : ctrl-shift + 6

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29
Q

In the show running-config command, which part of the syntax is represented by running-config ?

A

a keyword

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30
Q

After making configuration changes on a Cisco switch, a network administrator issues a copy running-config startup-config command. What is the result of issuing this command?

A

The new configuration will be loaded if the switch is restarted

31
Q

What command will prevent all unencrypted passwords from displaying in plain text in a configuration file?

A

(config)# service password-encryption

32
Q

A network administrator enters the service password-encryption command into the configuration mode of a router. What does this command accomplish?

A

This command prevents someone from viewing the running configuration passwords.

33
Q

What method can be used by two computers to ensure that packets are not dropped because too much data is being sent too quickly?

A

flow control

34
Q

Which statement accurately describes a TCP/IP encapsulation process when a PC is sending data to the network?

A

Segments are sent from the transport layer to the internet layer.

35
Q

What three application layer protocols are part of the TCP/IP protocol suite? (Choose three.)

A
  1. DHCP
  2. DNS
  3. FTP
36
Q

Match the description to the organization. (Not all options are used.)

A

ISOC: This organization promotes the open developement, evolution, and use of the internet throughout the world.

ISO: This organization is the largest developer of international standards in the world for a wide variety of products and services. It is known for its Open Systems Interconnection (OSI) reference model.

IANA: This organization is responsible for overseeing and managing IP adress allocation, domain name management, and protocol identifiers.

37
Q

Which name is assigned to the transport layer PDU?

A

segment

38
Q

When IPv4 addressing is manually configured on a web server, which property of the IPv4 configuration identifies the network and host portion for an IPv4 address?

A

subnet mask

39
Q

What process involves placing one PDU inside of another PDU?

A

encapsulation

40
Q

What layer is responsible for routing messages through an internetwork in the TCP/IP model?

A

internet

41
Q

For the TCP/IP protocol suite, what is the correct order of events when a Telnet message is being prepared to be sent over the network?

A

First: The Telnet-formatted data is provided to the next layer.

Second: THe TCP header is added.

Third: The IP header is added.

Fourth: The Ethernet header is added.

42
Q

Which PDU format is used when bits are received from the network medium by the NIC of a host?

A

frame

43
Q

Refer to the exhibit. ServerB is attempting to contact HostA. Which two statements correctly identify the addressing that ServerB will generate in the process? (Choose two.

A

ServerB will generate a frame with the destination MAC address of RouterB.

ServerB will generate a packet with the destination IP address of HostA.

44
Q

Which method allows a computer to react accordingly when it requests data from a server and the server takes too long to respond?

A

response timeout

45
Q

A web client is receiving a response for a web page from a web server. From the perspective of the client, what is the correct order of the protocol stack that is used to decode the received transmission?

A

Ethernet, IP, TCP, HTTP

46
Q

Which two OSI model layers have the same functionality as a single layer of the TCP/IP model? (Choose two.)

A

data link

physical

47
Q

At which layer of the OSI model would a logical address be added during encapsulation?

A

network layer

48
Q

What is a characteristic of multicast messages?

A

They are sent to a select group of hosts.

49
Q

Which statement is correct about network protocols?

A

They define how messages are exchanged between the source and the destination.

50
Q

What is an advantage of network devices using open standard protocols?

A

A client host and a server running different operating systems can successfully exchange data.

51
Q

Which device performs the function of determining the path that messages should take through internetworks?

A

a router

52
Q

Open the PT Activity. Perform the tasks in the activity instructions and then answer the question. ????
What is the IP address of the switch virtual interface (SVI) on Switch0?

A

192.168.5.10

53
Q

Why would a Layer 2 switch need an IP address?

A

to enable the switch to be managed remotely

54
Q

Refer to the exhibit. An administrator is trying to configure the switch but receives the error message that is displayed in the exhibit. What is the problem?
(a képen switch config lenne, de az “ena” előtt próbálták beütni a “conf t”-t)

A

The administrator must first enter privileged EXEC mode before issuing the command.

55
Q

What term describes a network owned by one organization that provides safe and secure access to individuals who work for a different organization?

A

extranet

56
Q

What term describes storing personal files on servers over the internet to provide access anywhere, anytime, and on any device?

A

cloud

57
Q

What term describes a network where one computer can be both client and server?

A

peer-to-peer

58
Q

What term describes a type of network used by people who work from home or from a small remote office?

A

SOHO network

59
Q

What term describes a computing model where server software runs on dedicated computers?

A

client/server

60
Q

What term describes a technology that allows devices to connect to the LAN using an electrical outlet?

A

powerline networking

61
Q

What term describes a policy that allows network devices to manage the flow of data to give priority to voice and video?

A

quality of service

62
Q

What term describes a private collection of LANs and WANs that belongs to an organization?

A

intranet

63
Q

What term describes the ability to use personal devices across a business or campus network?

A

BYOD

64
Q

At which OSI layer is a source IP address added to a PDU during the encapsulation process?

A

network layer

65
Q

At which OSI layer is a destination port number added to a PDU during the encapsulation process?

A

transport layer

66
Q

At which OSI layer is data added to a PDU during the encapsulation process?

A

application layer

67
Q

At which OSI layer is a source IP address added to a PDU during the encapsulation process?

A

network layer

68
Q

Which of the following is the name for all computers connected to a network that participate directly in network communication?

A

Host

69
Q

At which OSI layer is a destination IP address added to a PDU during the encapsulation process?

A

network layer

70
Q

At which OSI layer is a source MAC address added to a PDU during the encapsulation process?

A

data link layer

71
Q

At which OSI layer is a source port number added to a PDU during the encapsulation process?

A

transport layer

72
Q

At which OSI layer is a destination MAC address added to a PDU during the encapsulation process?

A

data link layer

73
Q

When data is encoded as pulses of light, which media is being used to transmit the data?

A

Fire optic cable

74
Q

Which two devices are intermediary devices? (Choose two)

A
  1. Router
  2. Switch

1/13 Szoftverfejlesztés (10 decks)

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