jdi na vlastní test/obsah stránky
an AUX connectiona Telnet connectiona console connectionan SSH connection
an AUX connection
a Telnet connection
a console connection
an SSH connection
2001::abcd::12001:0:abcd::12001:0:0:abcd::12001::abcd:0:12001:0000:abcd::1
2001::abcd::1
2001:0:abcd::1
2001:0:0:abcd::1
2001::abcd:0:1
2001:0000:abcd::1
malware that attaches itself to a legitimate program and spreads to other programs when launchedmalware that requires manual user intervention to spread between systemsmalware that can automatically spread from one system to another by exploiting a vulnerability in the targetmalware that was written to look like a video game
malware that attaches itself to a legitimate program and spreads to other programs when launched
malware that requires manual user intervention to spread between systems
malware that can automatically spread from one system to another by exploiting a vulnerability in the target
malware that was written to look like a video game
6419025462192
64
190
254
62
192
Multicast transmission can be used by routers to exchange routing information.Computers use multicast transmission to request IPv4 addresses.Multicast messages map lower layer addresses to upper layer addresses.A single packet can be sent to a group of hosts.Routers will not forward multicast addresses in the range of 224.0.0.0 to 224.0.0.255.The source address of a multicast transmission is in the range of 224.0.0.0 to 224.0.0.255.
Multicast transmission can be used by routers to exchange routing information.
Computers use multicast transmission to request IPv4 addresses.
Multicast messages map lower layer addresses to upper layer addresses.
A single packet can be sent to a group of hosts.
Routers will not forward multicast addresses in the range of 224.0.0.0 to 224.0.0.255.
The source address of a multicast transmission is in the range of 224.0.0.0 to 224.0.0.255.
utilizing the MAC address table to forward frames via the destination MAC addressexamining the destination MAC address to add new entries to the MAC address tableforwarding frames with unknown destination IP addresses to the default gatewayusing the source MAC addresses of frames to build and maintain a MAC address tablebuilding a routing table that is based on the first IP address in the frame header
utilizing the MAC address table to forward frames via the destination MAC address
examining the destination MAC address to add new entries to the MAC address table
forwarding frames with unknown destination IP addresses to the default gateway
using the source MAC addresses of frames to build and maintain a MAC address table
building a routing table that is based on the first IP address in the frame header
socket pairtwo-way handshakesliding windowthree-way handshake
socket pair
two-way handshake
sliding window
three-way handshake
linevtyinsecretinlineconinletmein
linevtyin
secretin
lineconin
letmein
the amount of traffic that is currently crossing the networkthe latency that is created by the number of network devices that the data is crossingthe sophistication of the encapsulation method applied to the datathe reliability of the gigabit Ethernet infrastructure of the backbonethe type of traffic that is crossing the networkthe bandwidth of the WAN connection to the Internet
the amount of traffic that is currently crossing the network
the latency that is created by the number of network devices that the data is crossing
the sophistication of the encapsulation method applied to the data
the reliability of the gigabit Ethernet infrastructure of the backbone
the type of traffic that is crossing the network
the bandwidth of the WAN connection to the Internet
It provides delimitation of data according to the physical signaling requirements of the medium.It defines software processes that provide services to the physical layer.It places information in the frame allowing multiple Layer 3 protocols to use the same network interface and media.It provides the logical addressing required that identifies the device.
It provides delimitation of data according to the physical signaling requirements of the medium.
It defines software processes that provide services to the physical layer.
It places information in the frame allowing multiple Layer 3 protocols to use the same network interface and media.
It provides the logical addressing required that identifies the device.
It enables companies to use IPv6 unique local addresses in the network.It converts the 48-bit MAC address into a 64-bit host address that can be used for automatic host addressing.It translates private IPv6 addresses into public IPv6 addresses.It converts IPv6 packets into IPv4 packets.It converts regular IPv6 addresses into 64-bit addresses that can be used on the Internet.
It enables companies to use IPv6 unique local addresses in the network.
It converts the 48-bit MAC address into a 64-bit host address that can be used for automatic host addressing.
It translates private IPv6 addresses into public IPv6 addresses.
It converts IPv6 packets into IPv4 packets.
It converts regular IPv6 addresses into 64-bit addresses that can be used on the Internet.
CSMA/CDCSMA/CAtoken passingpriority ordering
CSMA/CD
CSMA/CA
token passing
priority ordering
the sophistication of the encapsulation method applied to the datathe type of traffic that is crossing the networkthe bandwidth of the WAN connection to the Internetthe amount of traffic that is currently crossing the networkthe latency that is created by the number of network devices that the data is crossingthe reliability of the gigabit Ethernet infrastructure of the backbone
UDP provides connection-oriented, fast transport of data at Layer 3.UDP provides basic connectionless transport layer functions.UDP provides sophisticated flow control mechanisms.UDP relies on application layer protocols for error detection.UDP relies on IP for error detection and recovery.UDP is a low overhead protocol that does not provide sequencing or flow control mechanisms.
UDP provides connection-oriented, fast transport of data at Layer 3.
UDP provides basic connectionless transport layer functions.
UDP provides sophisticated flow control mechanisms.
UDP relies on application layer protocols for error detection.
UDP relies on IP for error detection and recovery.
UDP is a low overhead protocol that does not provide sequencing or flow control mechanisms.
to store the ARP tableto contain the running configuration fileto store the startup configuration fileto retain contents when power is removedto store the routing table
to store the ARP table
to contain the running configuration file
to store the startup configuration file
to retain contents when power is removed
to store the routing table
A company can monopolize the market.It encourages competition and promotes choices.The protocol can only be run on equipment from a specific vendor.An open standard protocol is not controlled or regulated by standards organizations.
A company can monopolize the market.
It encourages competition and promotes choices.
The protocol can only be run on equipment from a specific vendor.
An open standard protocol is not controlled or regulated by standards organizations.
255.255.255.224255.255.255.192255.255.255.0255.255.255.240255.255.255.128
255.255.255.224
255.255.255.192
255.255.255.0
255.255.255.240
255.255.255.128
to restart the ping processto interrupt the ping processto allow the user to complete the commandto exit to a different configuration mode
to restart the ping process
to interrupt the ping process
to allow the user to complete the command
to exit to a different configuration mode
loopbacklink-localmulticastglobal unicast
loopback
link-local
multicast
global unicast
It assists in protocol design.It speeds up packet delivery.It ensures a device at one layer can function at the next higher layer.It prevents technology in one layer from affecting other layers.It prevents designers from creating their own model.
It assists in protocol design.
It speeds up packet delivery.
It ensures a device at one layer can function at the next higher layer.
It prevents technology in one layer from affecting other layers.
It prevents designers from creating their own model.
2162541468
2
16
14
6
8
192.168.10.240192.168.10.0192.168.10.128192.168.10.224192.168.10.192
192.168.10.240
192.168.10.0
192.168.10.128
192.168.10.224
192.168.10.192
destination and source logical network addressestiming and synchronizationdestination and source port numbersdestination and source physical addresses
destination and source logical network addresses
timing and synchronization
destination and source port numbers
destination and source physical addresses
It is more expensive than UTP cabling is.Each pair of cables is wrapped in metallic foil.It combines the technique of cancellation, shielding, and twisting to protect data.It typically contains 4 pairs of fiber-optic wires.It is not affected by EMI or RFI.
It is more expensive than UTP cabling is.
Each pair of cables is wrapped in metallic foil.
It combines the technique of cancellation, shielding, and twisting to protect data.
It typically contains 4 pairs of fiber-optic wires.
It is not affected by EMI or RFI.
FTPHTTPDHCPSNMPICMP
FTP
HTTP
DHCP
SNMP
ICMP
financial transactions, audio conference, web pagefinancial transactions, web page, audio conferenceaudio conference, financial transactions, web pageaudio conference, web page, financial transactions
financial transactions, audio conference, web page
financial transactions, web page, audio conference
audio conference, financial transactions, web page
audio conference, web page, financial transactions
data link layer addressingplacement and removal of frames from the mediaerror correction through a collision detection methodsession control using port numbersdetection of errors through CRC calculationsdelimiting groups of bits into frames
data link layer addressing
placement and removal of frames from the media
error correction through a collision detection method
session control using port numbers
detection of errors through CRC calculations
delimiting groups of bits into frames
destination MAC address to a destination IPv4 addressdestination MAC address to the source IPv4 addressdestination IPv4 address to the source MAC addressdestination IPv4 address to the destination host name
destination MAC address to a destination IPv4 address
destination MAC address to the source IPv4 address
destination IPv4 address to the source MAC address
destination IPv4 address to the destination host name
192.0.2.199198.51.100.201209.165.201.223203.0.113.211
192.0.2.199
198.51.100.201
209.165.201.223
203.0.113.211
placement of frames on the mediacollision detectionperforming error detectionencapsulating PDUs from the transport layerrouting packets toward the destination
placement of frames on the media
collision detection
performing error detection
encapsulating PDUs from the transport layer
routing packets toward the destination
sessiontransportnetworkdata linkphysical
session
transport
network
data link
physical
172.168.10.65DD:DD:DD:DD:DD:DDAA:AA:AA:AA:AA:AABB:BB:BB:BB:BB:BB172.168.10.99CC:CC:CC:CC:CC:CC
172.168.10.65
DD:DD:DD:DD:DD:DD
AA:AA:AA:AA:AA:AA
BB:BB:BB:BB:BB:BB
172.168.10.99
CC:CC:CC:CC:CC:CC
DNS addressdefault gateway addresssubnet maskhost IP address
DNS address
default gateway address
subnet mask
host IP address
The administrator will be required to enter Cisco234.The administrator will be required to enter Cisco789.The administrator will be required to enter Cisco123.The administrator will be presented with the R1> prompt.
The administrator will be required to enter Cisco234.
The administrator will be required to enter Cisco789.
The administrator will be required to enter Cisco123.
The administrator will be presented with the R1> prompt.
It interacts with the device hardware.It interfaces between the users and the kernel.It provides dedicated firewall services.It provides the intrusion protection services for the device.
It interacts with the device hardware.
It interfaces between the users and the kernel.
It provides dedicated firewall services.
It provides the intrusion protection services for the device.
hub and spokemeshpoint-to-pointpartial mesh
hub and spoke
mesh
point-to-point
partial mesh
The connectivity between these two hosts allows for videoconferencing calls.This host does not have a default gateway configured.The average transmission time between the two hosts is 2 milliseconds.There are 4 hops b**etween this device and the device at 192.168.100.1.There is connectivity between this device and the device at 192.168.100.1.
The connectivity between these two hosts allows for videoconferencing calls.
This host does not have a default gateway configured.
The average transmission time between the two hosts is 2 milliseconds.
There are 4 hops b**etween this device and the device at 192.168.100.1.
There is connectivity between this device and the device at 192.168.100.1.
segmentframepacketbitsdata
segment
frame
packet
bits
data
to identify the broadcast address of the destination networkto identify the host address of the destination hostto identify faulty framesto identify the network address of the destination network
to identify the broadcast address of the destination network
to identify the host address of the destination host
to identify faulty frames
to identify the network address of the destination network
a network that recovers quickly when a failure occurs and depends on redundancy to limit the impact of a failurea network that protects confidential information from unauthorized accessa network that can expand quickly to support new users and applications without impacting the performance of the service delivered to existing usersa network that supports a mechanism for managing congestion and ensuring reliable delivery of content to all users
a network that recovers quickly when a failure occurs and depends on redundancy to limit the impact of a failure
a network that protects confidential information from unauthorized access
a network that can expand quickly to support new users and applications without impacting the performance of the service delivered to existing users
a network that supports a mechanism for managing congestion and ensuring reliable delivery of content to all users
A student is using a classroom VoIP phone to call home. The unique identifier burned into the phone is a transport layer address used to contact another network device on the same network.A student has two web browser windows open in order to access two web sites. The transport layer ensures the correct web page is delivered to the correct browser window.A student is playing a short web-based movie with sound. The movie and sound are encoded within the transport layer header.A corporate worker is accessing a web server located on a corporate network. The transport layer formats the screen so the web page appears properly no matter what device is being used to view the web site.
A student is using a classroom VoIP phone to call home. The unique identifier burned into the phone is a transport layer address used to contact another network device on the same network.
A student has two web browser windows open in order to access two web sites. The transport layer ensures the correct web page is delivered to the correct browser window.
A student is playing a short web-based movie with sound. The movie and sound are encoded within the transport layer header.
A corporate worker is accessing a web server located on a corporate network. The transport layer formats the screen so the web page appears properly no matter what device is being used to view the web site.
store-and-forward switchingfragment-free switchingcut-through switchingfast-forward switching
store-and-forward switching
fragment-free switching
cut-through switching
fast-forward switching
immunity to electrical hazardscancellationwoven copper braid or metallic foilcladding
immunity to electrical hazards
cancellation
woven copper braid or metallic foil
cladding
social networking without the Internetwireless networkingresource sharing without a dedicated servernetwork printing using a print server
social networking without the Internet
wireless networking
resource sharing without a dedicated server
network printing using a print server
when delivery overhead is not an issuewhen destination port numbers are dynamicwhen applications need to guarantee that a packet arrives intact, in sequence, and unduplicatedwhen a faster delivery mechanism is neededwhen applications do not need to guarantee delivery of the data
when delivery overhead is not an issue
when destination port numbers are dynamic
when applications need to guarantee that a packet arrives intact, in sequence, and unduplicated
when a faster delivery mechanism is needed
when applications do not need to guarantee delivery of the data
FE80::/10FF00::/8FEC0::/10FDEE::/7
FE80::/10
FF00::/8
FEC0::/10
FDEE::/7
10.0.0.0/8192.168.0.0/1664.100.0.0/14172.16.0.0/12127.16.0.0/12192.31.7.0/24
10.0.0.0/8
192.168.0.0/16
64.100.0.0/14
172.16.0.0/12
127.16.0.0/12
192.31.7.0/24
nslookupipconfignetstattracert
nslookup
ipconfig
netstat
tracert
It will discard the frame.It will strip off the data-link frame to check the destination IP address.It will forward the frame to the next host.It will remove the frame from the media.
It will discard the frame.
It will strip off the data-link frame to check the destination IP address.
It will forward the frame to the next host.
It will remove the frame from the media.
The subnet mask information is incorrect.The command syntax is wrong.The command is being entered from the wrong mode of operation.The interface is shutdown and must be enabled before the switch will accept the IP address.
The subnet mask information is incorrect.
The command syntax is wrong.
The command is being entered from the wrong mode of operation.
The interface is shutdown and must be enabled before the switch will accept the IP address.
IPHTTPEthernetTCP
IP
Ethernet
TCP
Technology is integrated into every-day appliances allowing them to interconnect with other devices, making them more ‘smart’ or automated.Home networking uses existing electrical wiring to connect devices to the network wherever there is an electrical outlet, saving the cost of installing data cables.Network capabilities are extended without requiring investment in new infrastructure, personnel, or software.End users have the freedom to use personal tools to access information and communicate across a business network.
Technology is integrated into every-day appliances allowing them to interconnect with other devices, making them more ‘smart’ or automated.
Home networking uses existing electrical wiring to connect devices to the network wherever there is an electrical outlet, saving the cost of installing data cables.
Network capabilities are extended without requiring investment in new infrastructure, personnel, or software.
End users have the freedom to use personal tools to access information and communicate across a business network.
Subnets may only be subnetted one additional time.Bits are returned, rather than borrowed, to create additional subnets.The size of each subnet may be different, depending on requirements.Each subnet is the same size.
Subnets may only be subnetted one additional time.
Bits are returned, rather than borrowed, to create additional subnets.
The size of each subnet may be different, depending on requirements.
Each subnet is the same size.
rollovercrossoverconsolestraight-through
rollover
crossover
console
straight-through
to allow the receiving host to assemble the packet in the proper orderto determine which Layer 3 protocol should be used to encapsulate the datato identify which switch ports should receive or forward the segmentto enable a receiving host to forward the data to the appropriate applicationto indicate the correct router interface that should be used to forward a segment
to allow the receiving host to assemble the packet in the proper order
to determine which Layer 3 protocol should be used to encapsulate the data
to identify which switch ports should receive or forward the segment
to enable a receiving host to forward the data to the appropriate application
to indicate the correct router interface that should be used to forward a segment
only at the edge of the networkbetween hosts and the default gatewayonly on the busiest network segmenton as many different network segments as possible
only at the edge of the network
between hosts and the default gateway
only on the busiest network segment
on as many different network segments as possible
FastEthernet0/1VLAN 1console 0vty 0
FastEthernet0/1
VLAN 1
console 0
vty 0
port numberingability to to carry digitized voicedefault window size3-way handshakeconnectionless communicationuse of checksum
port numbering
ability to to carry digitized voice
default window size
3-way handshake
connectionless communication
use of checksum
source and destination port numbersource and destination MACsource and destination IP addresssource and destination application protocol
source and destination port number
source and destination MAC
source and destination IP address
source and destination application protocol
to determine if the packet changed during transitto specify the order in which the segments travel from source to destinationto identify missing segments at the destinationto limit the number of segments that can be sent out of an interface at one timeto reassemble the segments at the remote location
to determine if the packet changed during transit
to specify the order in which the segments travel from source to destination
to identify missing segments at the destination
to limit the number of segments that can be sent out of an interface at one time
to reassemble the segments at the remote location
the destination IP addressthe source IP addressthe destination port numberthe source port number
the destination IP address
the source IP address
the destination port number
the source port number
255.255.255.252255.255.255.240255.255.255.0255.255.255.248
255.255.255.252
255.255.255.248
cisco.comroot.cisco.com.comwww.cisco.com
cisco.com
root.cisco.com
.com
www.cisco.com
fast-forward switchingCRC switchingfragment-free switchingQOS switchingstore-and-forward switching
CRC switching
QOS switching
session controlcompressionaddressingauthenticationencryption
session control
compression
addressing
authentication
encryption
The address is returned to the pool for reuse when the lease expires.The configuration is permanent and nothing changes.The address lease is automatically renewed until the PC is returned.The configuration is held by the server to be reissued when the PC is returned.
The address is returned to the pool for reuse when the lease expires.
The configuration is permanent and nothing changes.
The address lease is automatically renewed until the PC is returned.
The configuration is held by the server to be reissued when the PC is returned.
192.168.1.32/28192.168.1.32/27192.168.1.64/26192.168.1.64/29
192.168.1.32/28
192.168.1.32/27
192.168.1.64/26
192.168.1.64/29
255.255.255.128255.255.255.0255.255.255.224255.255.255.240
192.15.301.24064.104.78.227198.133.219.17128.107.12.117192.168.1.245192.15.301.24010.15.250.5
192.15.301.240
64.104.78.227
198.133.219.17
128.107.12.117
192.168.1.245
10.15.250.5
data link layerphysical layernetwork layerpresentation layer
data link layer
physical layer
network layer
presentation layer
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