2725884
Frage 1
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in the OSI Model, when data is transmitted from device A to device B, the header from A's layer 5 is read by B's ____________ Layer.
Antworten
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physical
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transport
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session
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presentation
Frage 2
Frage
The _______ Layer is responsible for moving frames from on hop to the next?
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physical
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data link
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transport
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none
Frage 3
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The ____ Layer is responsible for the delivery of message from one process to another
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network
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physical
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transport
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none
Frage 4
Frage
In the OSI model, encryption and decryption are functions of the _____ layer?
Antworten
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transport
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session
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presentation
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application
Frage 5
Frage
Routers function in the _____ layer?
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data link
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data link and network
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physical and data link
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physical,data link, and network
Frage 6
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switches function in the _____ layers.
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data link
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data link and network
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physical and data link
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physical, data link, and network
Frage 7
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_______ has a higher transmission rate in the downstream direction than in the upstream direction
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ADSL
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HDSL
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SDSL
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VDSL
Frage 8
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in an ESS the _______ stations are part of a wired LAN.
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AAL5
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AP
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ATM
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BSS
Frage 9
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PPP is a _______ layer protocol?
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data link
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network
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physical and data link
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network and data link
Frage 10
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when the internet started it was decided to make the network layer a ______ service to make it simple
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connectionless
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connection oriented
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virtual
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none
Frage 11
Frage
in a ____ service, there is a relation between all packets belonging to a message?
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connectionless
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connection oriented
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virtual
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none
Frage 12
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In a connection-oriented service, each packet is forwarded based on the______.
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destination address
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label
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source address
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none
Frage 13
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_________ control means regulation the amount of data a source can send without overwhelming the destination.
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congestion
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error
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flow
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none
Frage 14
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______ control in a network means handling a situation in which too many packets are present in an area of the internet
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flor
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error
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congestion
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none
Frage 15
Frage
In class C, the netid is between
Antworten
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0 to 127
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128 to 191
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192 to 223
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none
Frage 16
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In classless addressing, a ____ is assigned to an organization.
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fixed-length
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fixed number of blocks
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variable-length block
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none
Frage 17
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The number of addresses assigned to an organization in classless addressing _____.
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can be any number
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must be a multiple of 256
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must be a power of 2
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none
Frage 18
Frage
Which address could be the beginning address of a block of 32 classless addresses?
Antworten
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2.4.6.5
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2.4.6.16
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2.4.6.64
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none
Frage 19
Frage
An organization is granted a block: one address is 2.2.2.64/25. If the subnet prefix length is /28 what is the maximum number of subnets?
Antworten
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2
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4
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8
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16
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32
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64
Frage 20
Frage
in a _____ delivery, both the deliverer of the ip packet and the destination are on the same network.
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connection-oriented
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connnectionless
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direct
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indirect
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virtual
Frage 21
Frage
in ______ delivery, the deliverer of the ip packet and the destination are on different networks.
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connection-oriented
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connectionless
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direct
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indirect
Frage 22
Frage
IN _____ forwarding, the full ip address of a destination is given in the routing table
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defualt
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host specific
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next hop
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network specific
Frage 23
Frage
In _______ forwarding, the mask and destination address are both 0.0.0.0 in the routing table.
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deafualt
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host specific
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next-hop
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network specific
Frage 24
Frage
in ______ forwarding the destination address is a network address in the routing table
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default
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host specific
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next hop
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network specific
Frage 25
Frage
In ______ forwarding, the routing table holds the address of just the next hop instead of complete route info.
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default
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host specific
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next hop
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network specific
Frage 26
Frage
in classsless addressing, we need routing table with atleast ______ columns
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3
-
4
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6
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8
Frage 27
Frage
The principle of _______ states that the routing table is sorted from longest mask to the shortest mask.
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first mask matching
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last mask matching
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longest mask matching
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shortest mask matching
Frage 28
Frage
A ____ routing table contains information entered manually?
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dynamic
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hierarchical
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static
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virtual
Frage 29
Frage
The input and output ports of a router perform the ______ layer functions of the router
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network
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physical and data link
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physical and network
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transport
Frage 30
Frage
The _____ protocol is the transmission mechanism used by the tcp/ip sutie.
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ARP
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ICMP
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IP
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TCP
Frage 31
Frage
IP is ______ datagram protocol
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connectionless
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unreliable
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both connectionless and unreliable
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none
Frage 32
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AN HLEN value of decimal 10 means
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10 bytes in the header
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40 bytes in the header
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10 bytes of option
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40 bytes of option
Frage 33
Frage
if the fragment offset has a value of 100 it means that
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the datagram has not been fragmented
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the datagram is 100 bytes in size
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the first byte of the datagram is byte 800
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the last byte of the datagram is byte 800
Frage 34
Frage
The ip header size is _______ bytes long.
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10
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20
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60
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20 to 60
Frage 35
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Packets in the ip layer are called
Antworten
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datagrams
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frames
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packets
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segments
Frage 36
Frage
When a datagram is encapsulated in a frame, the total size of the datagram must be less than the ____
Antworten
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MAT
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MTA
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MUT
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MTU
Frage 37
Frage
The ______ module consults the MTU table to determine the packet size necessary for transsmission
Antworten
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forwarding
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fragmentation
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proccessiong
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sizing
Frage 38
Frage
To find the physical address of the exiting-point router, ATM uses the service of ________
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ARP
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ATMARP
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ICMP
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IP
Frage 39
Frage
A ______ is an ARP that acts of behalf of a set of hosts
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ARP
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DHCP
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RARP
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Proxy ARP
Frage 40
Frage
in _____ mapping , a table associating a logical address with a physical address is updated manually
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dyanmic
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static
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logical
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physical
Frage 41
Frage
A ______ is a local address. Its jurisdiction is over a local network
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logical address
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physical address
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port
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static address
Frage 42
Frage
ICMP is a ______ layer protocol
Antworten
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application
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data link
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network
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transport
Frage 43
Frage
for the purposes of routing, the internet is divided into
Antworten
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autonomous networks
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autonomous systems
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wide area networks
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none
Frage 44
Frage
routing between autonomous systems is referred to as _______ routing.
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border
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interdomain
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intradomain
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out of domain
Frage 45
Frage
IN _____ routing, the least cost route between any two nodes is the route with the minumum distance
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distance vector
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link state
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path vector
Frage 46
Frage
IN _____, each node maintains a vector minimum distance to everynode
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distance vector
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link state
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path vector
Frage 47
Frage
in RIP, the ____ timer controls the advertising of regular update messages.
Antworten
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expiration
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garbage collection
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periodic
Frage 48
Frage
RIP uses the services of
Antworten
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ARP
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Ethernet
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IP
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UDP
Frage 49
Frage
The _____ routing uses the dijkstra algorithm to build a routing table
Antworten
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distance vector
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link state
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path vector
Frage 50
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in _____ rotuing, we assume that there is one node in each autonomous system that acts on behalf of the the entire system
Antworten
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distance vector
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link state
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path vector
Frage 51
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The ___ protocol allows the admin to assign cost, called the metric to each route
Antworten
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BGP
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OSPF
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RIP
Frage 52
Frage
BGP uses the services of
Antworten
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ARP
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IP
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ethernet
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UDP
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TCP
Frage 53
Frage
The main problem that must be solved in providing mobile communication using the ip protocol is
Antworten
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addressing
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connecting
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forwarding
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none
Frage 54
Frage
The original IP addressing was based on the assumption that a host is ______
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stationary
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mobile
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moving
Frage 55
Frage
When a mobile host acts as a foreign agent, the care of address is called a ____ care of address
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co-located
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commmon
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shared
Frage 56
Frage
A registration request or reply is sent by ____ using a well known port 434
Antworten
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IP
-
TCP
-
UDP
Frage 57
Frage
one to many communication between one source and specific group of hosts is classified as a ______ communications
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broadcast
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multicast
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unicast
Frage 58
Frage
IN ______, the router forwards the received packet through only one of its interfaces
Antworten
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broadcast
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multicast
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unicast
Frage 59
Frage
emulation of ____ through _____ is not efficient and may create long delays
Antworten
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broadcasting:multicasting
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multicasting: multiple unicasting
-
unicasting: multiple unicasting
Frage 60
Frage
in multicast routing, each involved router needs to construct a ___ path tree for each group
Antworten
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average
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longest
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shortest
Frage 61
Frage
In the group-shared tree approach, ________ is/are involved in mulitcasting
Antworten
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all routers
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only some routers
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only the core router
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