A.The transport layer divides a data stream into segments and may add reliability and flow control information.
B.The data link layer adds physical source and destination addresses and an FCS to the segment.
C.Packets are created when the network layer encapsulates a frame with source and destination host addresses and protocol-related control information.
D.Packets are created when the network layer adds Layer 3 addresses and control information to a segment.
E.The presentation layer translates bits into voltages for transmission across the physical link.
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A. session
B. network
C. Physical
D. data link
E. Transport
A. application
B. presentation
C. session
D. transport
E. internet
F. data link
Refer to the exhibit, Host A pings interface S0/0 on router 3, what is the TTL value for that ping?（）
A. 253
B. 252
C. 255
D. 254
A.transport
B.network
C.presentation
D.session
E.application
Refer to the exhibit. Which three statements correctly describe Network Device A（）
A.With a network wide mask of 255.255.255.128, each interface does not require an IP address.
B.With a network wide mask of 255.255.255.128, each interface does require an IP address on a unique IP subnet.
C.With a network wide mask of 255.255.255.0, must be a Layer 2 device for the PCs to communicate with each other.
D.With a network wide mask of 255.255.255.0, must be a Layer 3 device for the PCs to communicate with each other.
E.With a network wide mask of 255.255.254.0, each interface does not require an IP address.
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