>>> Chương 2
1. 10BASE2 uses _______ cable while 10BASE5 uses _______.
a./
thick coaxial, thin coaxial
b./ twisted-pair, thick coaxial
c./ thin coaxial, thick coaxial
d./ none of the above
2. ______ specifies a physical star topology featuring a central hub and twisted-pair cable as the medium.
a./ 10BASE5
b./ 10BASE2
c./ 10BASE-T
d./ none of the above
3. Frame Relay operates in the _______.
a./ physical layer
b./ data link layer
c./ physical and data link layers
d./ none of the above
4. Which ATM layer has a 53-byte cell as an end product?
a./ physical
b./ ATM
c./ application adaptation
d./ none of the above
5. The IP protocol uses the _______ sublayer.
a./ AAL1
b./ AAL2
c./ AAL5
d./ none of the above
6. Repeaters function in the _______ layer.
a./ physical
b./ data link
c./ network
d./ none of the above
7. Bridges function in the _______ layers.
a./ physical and data link
b./ data link and network
c./ network and transport
d./ none of the above
8. A bridge has access to the _______ address of a station on the same network.
a./ logical
b./ physical
c./ port
d./ none of the above
9. Routers function in the _______ layers.
a./ physical and data link
b./ physical, data link, and network
c./ data link and network
d./ none of the above
10. _______ has a higher transmission rate in the downstream direction than in the upstream direction.
a./ VDSL
b./ ADSL
c./ SDSL
d./ none of the above
11. ______ is suitable for businesses that require comparable upstream and downstream data rates.
a./ VDSL
b./ ADSL
c./ SDSL
d./ none of the above
12. ______ was designed as an alternative to the T-1 line.
a./ VDSL
b./ ADSL
c./ HDSL
d./ none of the above
13. A traditional TV network transmits signals _______.
a./ upstream
b./ downstream
c./ upstream and downstream
d./ none of the above
14. The second generation of cable networks is called a(n) _______ network.
a./ HFC
b./ GHC
c./ FHC
d./ none of the above
15. An HFC network uses _______ as the medium from the cable TV office to the fiber node.
a./ optical fiber
b./ coaxial cable
c./ UTP
d./ none of the above
16. In an ESS the _______ station is mobile.
a./ AP
b./ server
c./ BSS
d./ none of the above
17. In an ESS the _______ stations are part of a wired LAN.
a./ AP
b./ server
c./ BSS
d./ none of the above
18. SONET is a standard for _______ networks.
a./ twisted-pair cable
b./ coaxial cable
c./ fiber-optic cable
d./ none of the above
19. SONET is an acronym for _______ Network.
a./ Synchronous Optical
b./ Standard Optical
c./ Symmetrical Open
d./ none of the above
20. PPP is a _______ layer protocol.
a./ physical
b./ data link
c./ physical and data link
d./ none of the above
1. 10BASE2 uses _______ cable while 10BASE5 uses _______.
a./
thick coaxial, thin coaxialb./ twisted-pair, thick coaxialc./ thin coaxial, thick coaxiald./ none of the above 2. ______ specifies a physical star topology featuring a central hub and twisted-pair cable as the medium.
a./ 10BASE5b./ 10BASE2c./ 10BASE-Td./ none of the above3. Frame Relay operates in the _______.
a./
physical layerb./ data link layerc./ physical and data link layersd./
none of the above4. Which ATM layer has a 53-byte cell as an end product?
a./
physicalb./
ATMc./
application adaptationd./
none of the above5. The IP protocol uses the _______ sublayer.
a./
AAL1b./
AAL2c./
AAL5d./
none of the above6. Repeaters function in the _______ layer.
a./
physicalb./
data linkc./
networkd./
none of the above7. Bridges function in the _______ layers.
a./
physical and data linkb./
data link and networkc./
network and transportd./
none of the above8. A bridge has access to the _______ address of a station on the same network.
a./
logicalb./
physicalc./
portd./
none of the above9. Routers function in the _______ layers.
a./
physical and data linkb./
physical, data link, and networkc./
data link and networkd./
none of the above10. _______ has a higher transmission rate in the downstream direction than in the upstream direction.
a./
VDSLb./ ADSLc./ SDSLd./ none of the above11. ______ is suitable for businesses that require comparable upstream and downstream data rates.
a./
VDSLb./ ADSLc./ SDSLd./ none of the above12. ______ was designed as an alternative to the T-1 line.
a./
VDSLb./
ADSLc./
HDSLd./
none of the above13. A traditional TV network transmits signals _______.
a./
upstreamb./
downstreamc./
upstream and downstreamd./
none of the above14. The second generation of cable networks is called a(n) _______ network.
a./
HFCb./
GHCc./
FHCd./
none of the above15. An HFC network uses _______ as the medium from the cable TV office to the fiber node.
a./
optical fiberb./
coaxial cablec./
UTPd./
none of the above16. In an ESS the _______ station is mobile.
a./
APb./ serverc./ BSSd./ none of the above17. In an ESS the _______ stations are part of a wired LAN.
a./
APb./ serverc./ BSS d./ none of the above18. SONET is a standard for _______ networks.
a./
twisted-pair cableb./ coaxial cablec./ fiber-optic cabled./ none of the above19. SONET is an acronym for _______ Network.
a./
Synchronous Opticalb./ Standard Opticalc./ Symmetrical Opend./ none of the above20. PPP is a _______ layer protocol.
a./
physicalb./ data linkc./ physical and data link d./ none of the aboveEditor: Vương Lan Kiều
Source: http://baomathethong.blogspot.com/
Copyrighted Content: mcgraw-hill.com
Source: http://baomathethong.blogspot.com/
Copyrighted Content: mcgraw-hill.com
Không có nhận xét nào:
Đăng nhận xét