3921046
Descripción
Test por ludwig.alwin, actualizado hace más de 1 año
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Creado por ludwig.alwin
hace alrededor de 9 años
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Pregunta 1
Pregunta
[blank_start]Application[blank_end]
[blank_start]Presentation[blank_end]
[blank_start]Session[blank_end]
[blank_start]Transport[blank_end]
[blank_start]Network[blank_end]
[blank_start]Data-Link[blank_end]
[blank_start]Physikal[blank_end]
Respuesta
-
Application
-
Presentation
-
Session
-
Transport
-
Network
-
Data-Link
-
Physikal
Pregunta 2
Pregunta
On which layers of the OSI model does a transceiver work? (Choose one):
Respuesta
-
Application
-
Data Link
-
Network
-
Transport
-
Physical
Pregunta 3
Pregunta
On which layers of the OSI model does a hub work? (Choose one):
Respuesta
-
Application
-
Data Link
-
Network
-
Transport
-
Physical
Pregunta 4
Pregunta
Which physical topology is used in the presence of a hub? (Choose one):
Respuesta
-
Mesh
-
Star
-
Bus
-
Ring
-
Extended star
Pregunta 5
Pregunta
On which layers of the OSI model does the switch work? (Choose two):
Respuesta
-
Application
-
Data Link
-
Network
-
Physical
-
Transport
Pregunta 6
Pregunta
Which physical topology is used in the presence of a switch? (Choose one):
Respuesta
-
Bus
-
Ring
-
Star
-
Extended star
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Mesh
Pregunta 7
Pregunta
Which parameters are stored in the switching table of a switch? (Choose three):
Respuesta
-
Source MAC address of a frame
-
Destination MAC address of a frame
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Type of frame
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Port number
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Frame Check Sequence FCS
-
Age of entry
-
IP-header
Pregunta 8
Pregunta
A switch has learned where a computer with a given MAC address is connected to, but looses this information later. What is the most probable reason of this behavior?
Respuesta
-
An administrator has deleted the entry
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Flooding of a frame has deleted the entry
-
The connected computer has deleted the entry
-
Timer of switching table aged out
-
The destination MAC address of an errornous frame deleted the entry
Pregunta 9
Pregunta
What will the switch do in the MAC-table in the case of question 8? (Choose one):
Respuesta
-
Deleting entry for port Fa1
-
Inserting Destination MAC-address
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Deleting entry for port Fa9
-
Restart the timer for port Fa1
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Inserting source MAC-Adress
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Restarting timer for port Fa9
Pregunta 10
Pregunta
What will the switch do in the MAC-table in the case of question 9 (auf dem bild steht 10 aber es ist das richtige Bild)? (Choose one):
Respuesta
-
Deleting entry for port Fa1
-
Inserting Destination MAC-address
-
Deleting entry for port Fa9
-
Restart the timer for port Fa1
-
Inserting Source MAC-address
-
Restarting the timer for port Fa9
Pregunta 11
Pregunta
Which organization is responsible for the global administration of network numbers of an
IP address? (Choose one):
Respuesta
-
Local network administrator
-
NIC
-
CIA / NSA
-
RIPE
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IANA /ICANN
Pregunta 12
Pregunta
Which facts hold for private IPv4 addresses? (Choose 3):
Respuesta
-
It does not access the physical network
-
It can be applied to isolated hosts which are not directly accessible from the global internet.
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There are 3 IPv4 address ranges defined for private IP addresses.
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10.255.255.255 is a possible private IP network address.
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192.168.1.12 is a possible private IP host address.
-
172.16.1.258 is a possible private IP host address.
-
172.33.1.12 is a possible private IP host address.
Pregunta 13
Pregunta
Which of the following IPv4 host adresses are globally routable? Assume default subnet
masks according to the network class. (Choose 3)
Respuesta
-
194.168.1.0
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198.168.1.1
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180.168.1.255
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192.168.1.266
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11.12.13.14
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10.11.12.13
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172.16.1.1
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127.0.0.1
Pregunta 14
Pregunta
What is the dotted decimal representation of the following IPv4 address given in binary
format (Chose one) 10100001.00111010.10101100.00001110
Respuesta
-
160.58.172.14
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161.58.172.10
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161.58.172.14
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161.59.172.14
-
161.58.171.10
Pregunta 15
Pregunta
Consider a classful IPv4 address with 16 bits network portion and 16 bits host portion. What statements hold for this type of address. (Choose four answers):
Respuesta
-
Class A address
-
Class B address
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A possible network address is 200.201.0.0 .
-
A possible network address is 130.131.0.0 .
-
A possible network address is 80.81.0.0 .
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Each network may have up to 255 hosts.
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Each network may have up to 65 534 hosts.
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The default subnet mask is 255.0.0.0 .
-
The default subnet mask is 255.255.0.0 .
-
The default subnet mask is 255.255.255.0 .
Pregunta 16
Pregunta
What is the range of valid IP addresses that can be assigned to hosts in the IP network with the network number 212.126.53 and default network mask. (Choose for 2)
Respuesta
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First host address = 212.126.53.0
-
First host address = 212.126.53.1
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First host address = 212.126.54.0
-
Last host address = 212.126.53.254
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Last host address = 212.126.53.255
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Last host address = 212.126.53.256
Pregunta 17
Pregunta
How can reflection in a copper cable be avoided (choose one):
Respuesta
-
Thicker wires
-
Impedance of attached network components must be equal to the impedance of the cable
-
Impedance of attached network components must be higher as the impedance of the cable
-
Impedance of attached network components must be smaller as the impedance of the cable
-
Thinner wires
Pregunta 18
Pregunta
What are types of noise (choose two):
Respuesta
-
Surrounding noise
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Thermal noise
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Resistance noise
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Coil noise
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Near-end crosstalk
-
Far-end thermal noise
Pregunta 19
Pregunta
How can thermal noise be decreased (choose one):
Respuesta
-
Never
-
Cooling of components
-
Smaller voltage
-
Smaller current
-
Metal housing
Pregunta 20
Pregunta
How can EMI reduced in a copper cable (choose two):
Respuesta
-
Metal housing
-
Shielding
-
Cooling
-
Thicker wires
-
Cancellation of electromagnetic fields
-
Cancellation of static electric fields
Pregunta 21
Pregunta
Which layers of the OSI-model are standardized by the IEEE (choose all that apply):
Respuesta
-
Layer 1
-
Layer 2
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Layer 3
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Layer 4
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Layer 5
Pregunta 22
Pregunta
Which are fields of an Ethernet frame (choose three):
Respuesta
-
Preamble
-
Time to live TTL
-
Protocol
-
Type
-
Length
-
LLC
-
Source IP address
-
Destination MAC address
Pregunta 23
Pregunta
Which are fields of an IEEE 802.3-frame (choose three):
Respuesta
-
Time to live TTL
-
Offset
-
Length
-
Start of Frame Delimiter
-
Destination IP address
-
Source MAC address
-
Protocol
Pregunta 24
Pregunta
Choose all network layer protocols you know:
Respuesta
-
IPX
-
ATM
-
Ethernet
-
IP
-
TCP
-
ICPM
-
Apple Talk
Pregunta 25
Pregunta
Which protocols belong to the application layer? Click all that apply:
Respuesta
-
DECNET
-
POPv3
-
UDP
-
SIP
-
Telnet
-
Frame Relay
-
ISDN
-
HTTP
Pregunta 26
Pregunta
Which layers in the OSI- and TCP/IP model are identical in their functionality
(choose two)?
Respuesta
-
Application
-
Data Link
-
Network
-
Session
-
Presentation
-
Transport
-
Network Access
Pregunta 27
Pregunta
Which functionality belongs to TCP (choose three):
Respuesta
-
Fast
-
Error detection only
-
Congestion control
-
Flow control
-
Unreliable
-
Reliable
-
Connection-less
Pregunta 28
Pregunta
Which functionality belongs to UDP (choose three):
Respuesta
-
Fast
-
Error correction
-
Congestion control
-
Flow control
-
Unreliable
-
Reliable
-
Connection-less
Pregunta 29
Pregunta
SIP is used for (choose two):
Respuesta
-
Transferring E-mails
-
Call establishment for IP-telephony
-
Download HTML-pages
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Chatting
-
Signaling for IP-video
-
Wikis
Pregunta 30
Pregunta
Which layer describes end-to-end-delivery of segments (choose one):
Respuesta
-
Physical
-
Data Link
-
Network
-
Transport
-
Session
-
Presentation
-
Application
Pregunta 31
Pregunta
Which layer describes the delivery of frames (choose one):
Respuesta
-
Physical
-
Data Link
-
Network
-
Transport
-
Session
-
Presentation
-
Application
Pregunta 32
Pregunta
Which are protocols of the Data Link Layer (choose three):
Respuesta
-
TCP
-
IPX
-
Frame Relay
-
DNS
-
SIP
-
ATM
-
Ethernet
Pregunta 33
Pregunta
Which term describes Gnutella best?
Respuesta
-
Offline text-based communication service
-
Hierarchical file-sharing service
-
Peer-to-peer file-sharing service
-
Real-time text-based communications service
-
Collaboration tool
-
Tool for sending and receiving electronic mails
-
Tool for groups of people to edit and view web-pages together
-
Retrieval service for HTML-pages
Pregunta 34
Pregunta
Which term describes Wiki best?
Respuesta
-
Offline text-based communication service
-
Hierarchical file-sharing service
-
Peer-to-peer file-sharing service
-
Real-time text-based communication service
-
Collaboration tool
-
Tool for sending and receiving electronic mails
-
Tool for groups of people to edit and view web-pages together
-
Retrieval service for HTML-pages
Pregunta 35
Pregunta
Which term describes Instant Messaging best?
Respuesta
-
Offline text-based communication service
-
Hierarchical file-sharing service
-
Peer-to-peer file-sharing service
-
Real-time text-based communication service
-
Collaboration tool
-
Tool for sending and receiving electronic mails
-
Tool for groups of peoples to edit and view web-pages together
-
Retrieval service for HTML-pages
Pregunta 36
Pregunta
What describes SMB respectively SAMBA best?
Respuesta
-
Short-term file-sharing tool in a client-server architecture
-
Tool for chatting
-
Long-term file-sharing tool in a peer-to-peer architecture
-
Tool for weblog
-
Long-term file-sharing tool in a client-server architecture
-
Short-term file-sharing tool in a peer-to-peer architecture
Pregunta 37
Pregunta
What is the disadvantage of a connection-less network?
Respuesta
-
Fast
-
Error-recovery
-
Retransmission
-
Sender does not know if receiver is operable
-
Messages cannot get lost without notification of receiver
Pregunta 38
Pregunta
What are features of the internet (choose three):
Respuesta
-
It requires a connection oriented network for all applications
-
Data packets can travel multiple paths through the network
-
It allows for billing of network by the amount of time a connection is established
-
It can rapidly adapt to the loss of data transmission facilities
-
It efficiently utilizes the network infrastructure to transfer data
Pregunta 39
Pregunta
What are the features of peer-to-peer networks (choose two)?
Respuesta
-
Only a small server is needed
-
Clients run a dedicated server software
-
High bit-rates are possible
-
No management procedures are necessary
-
Each machine is client and server
Pregunta 40
Pregunta
Which devices are network devices (choose all that apply):
Respuesta
-
PC
-
Access point
-
Printer
-
Router
-
Switch
-
Laptop
-
Firewall
Pregunta 41
Pregunta
Which media technologies in communication networks do you know (choose three)?
Respuesta
-
Video
-
Copper cable
-
Circuit
-
Wireless
-
Fiber
-
MPEG4
-
MP3
Pregunta 42
Pregunta
Calculate the number of possible connections between 8 nodes in a full mesh network: [blank_start]28[blank_end]
Respuesta
-
28
Pregunta 43
Pregunta
Calculate the number of possible connections between 6 nodes in a full mesh network: [blank_start]15[blank_end]
Respuesta
-
15
Pregunta 44
Pregunta
Calculate the decimal value of the binary number 10101011(binary): [blank_start]171[blank_end]
Respuesta
-
171
Pregunta 45
Pregunta
Calculate the binary number of decimal 158dec: [blank_start]10011110[blank_end]
Respuesta
-
10011110
Pregunta 46
Pregunta
Calculate the hex value of the following 12 bits: 1011 1001 1110: [blank_start]B9E[blank_end]
Respuesta
-
B9E
Pregunta 47
Pregunta
Calculate the decimal value of the hexadecimal number: 11Ahex: [blank_start]282[blank_end]
Respuesta
-
282
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