Which Layer 4 protocol is used for a Telnet connection between two Ezonexam routers?A. IPB
Which Layer 4 protocol is used for a Telnet connection between two Ezonexam routers?
A. IP
B. ICMP
C. DNS
D. TCP
E. UDP
F. RTP
Which Layer 4 protocol is used for a Telnet connection between two Ezonexam routers?
A. IP
B. ICMP
C. DNS
D. TCP
E. UDP
F. RTP
A. Layer 2
B. Layer 3
C. Layer 4
D. Layer 5
E. Layer 6
F. Layer 7
A. Layer 5
B. Layer 4
C. Layer 7
D. Layer 6
E. Layer 3
F. Layer 2
G. Layer 1
A. Layer 1
B. Layer 2
C. Layer 3
D. Layer 4
E. Layer 5
F. Layer 6
E. Layer 7
(1)
A.reapers
B.relays
C.connectors
D.modems
(2)
A.frames
B.packets
C.packages
D.cells
(3)
A.specia l
B.dependent
C.similar
D.dissimilar
(4)
A.syntax
B.semantics
C.language
D.format
(5)
A.analyze
B.parse
C.delete
D.create
第6题:文中(1 )处正确的答案是()。
A.reapers
B.relays
C.connects
D.modems
A.reapers
B.relays
C.packages
D.modems
从供选择的答案中,选出最确切的解答。
Networks can be interconnected by different devices. In the physical layer, networks can be connected by(1)or hubs, which just move the bits from one network to an identical network. One layer up we fine bridges and switches, which operate at data link layer. They can accept(2),examine the MAC address and forward the frames to a different network while doing minor protocol translation in the process. In the network layer, we have routers that can connect two networks. If two networks have(3)network layer, the router may be able to translate between the packer formats. In the transport layer we find transport gateway, which can interface between two transport connections. Finally, in the application layer, application gateways translate message(4). As an example, gateways between Intemet E-mail and X.400 E-mail must(5)the E-mail message and change various header fields.
(2) functions in a NetWare network which is used to define addressing schemes.
(3) is a network layer device that supports multiple LAN interfaces and segments LANs into smaller collision and broadcast domains.
(4) is the popular LAN developed under the direction of the IEEE802.3.
(5) is a device which enables digital microcomputers to communicate across analog telephone lines.
A.The volume
B.The bandwidth
C.The noise
D.The delay
A、basal lanina
B、basal layer
C、dermis
D、keratinocyte layer
Which layer-function is mostly implemented in a network adapter()。
A.Physical layer and link layer
B.Network layer and transport layer
C.Physical layer and network layer
D.Transport layer and application layer
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