Opdracht 1 bij Intermediary Devices: vertaal, voor zover de Engelstalige term niet ook in de
Nederlandstalige context wordt gebruikt, onderstaande woorden/begrippen in het Nederlands. Indien
je de originele bron weet te vinden kun je de pagina (page) verwijzingen gebruiken om de woorden in
de context te zien. Maak gebruik van de Glossary (staat in Blackboard/op de website)!
Zet ze tot slot in alfabetische volgorde.
channel page 35
segmentation page 35
multiplexing page 36
switch page 37
end device page 37
host page 37
client page 37
host address page 38
physical address page 38
intermediary device page 38
encoding page 39
local-area network (LAN) page 41
Internet service provider (ISP) page 42
protocols page 44
protocol suite page 45
Institute of Electrical and Electronics Engineers
(IEEE) page 46
Internet Engineering Task Force (IETF) page 46
layered models page 47
TCP/IP page 48
encapsulation page 51
decapsulation page 51
protocol data unit (PDU) page 51
segment page 51
frame page 51
Open Systems Interconnection (OSI) page 53
International Organization for Standardization (ISO)
page 53
port page 57
Welk begrip ( de nummers) hoort bij welke beschrijving ( de letters)?
Table 2-1 Intermediary Devices
Device and Type Description
A : Connect end users to their network. Examples are hubs,
switches, and wireless access points.
B : Connect one network to one or more other networks.
Routers are the main example.
C
: Route services such as IPTV and wireless broadband.
D : Connect users to servers and networks through
telephone or cable.
E
: Secure the network with devices such as firewalls that
analyze traffic exiting and entering networks.
1 Network access devices
2 Security devices
3 Internetwork devices
4 Modems
5 Communication servers
Opdracht:
Hoe zou je onderstaande tekst in simpeler Engelse kunnen verwoorden?
Begin met onderstaande tekst in het Nederlands te vertalen en het daarna in eenvoudiger Nederlands te zeggen.
Intermediary Devices and Their Role on the Network
End devices are the hosts that initiate communications and are the ones that people are most
familiar with. But getting a message from the source to the destination can be a complex
task involving several intermediary devices along the way. Intermediary devices connect the
individual hosts to the network and can connect multiple individual networks to form an
internetwork.
Intermediary devices are not all the same. Some work inside the LAN performing switching
functions, and others help route messages between networks. Table 2-1 lists some intermediary
devices and their functions.
The management of data as it flows through the network is also a role of the intermediary
devices. These devices use the destination host address, in conjunction with information
about the network interconnections, to determine the path that messages should take
through the network. Processes running on the intermediary network devices perform these
functions:
■ Regenerate and retransmit data signals
■ Maintain information about what pathways exist through the network and internetwork
■ Notify other devices of errors and communication failures
■ Direct data along alternate pathways when there is a link failure
■ Classify and direct messages according to quality of service (QoS) priorities
■ Permit or deny the flow of data, based on security settings