计算机网络英文试题库附答案chapter3Word下载.docx
- 文档编号:14433263
- 上传时间:2022-10-22
- 格式:DOCX
- 页数:23
- 大小:132.37KB
计算机网络英文试题库附答案chapter3Word下载.docx
《计算机网络英文试题库附答案chapter3Word下载.docx》由会员分享,可在线阅读,更多相关《计算机网络英文试题库附答案chapter3Word下载.docx(23页珍藏版)》请在冰豆网上搜索。
BTCPandIP
CTCPandUDP
DSMTP
5.WhichofthefollowingservicesisnotprovidedbyTCP?
ADelayguaranteesandbandwidthguarantees
BReliabledatatransfersandflowcontrols
CCongestioncontrols
DIn-orderdatatransfers
6.Thesetwominimaltransport-layerservices----____and____----aretheonlytwoservicesthatUDPprovides!
Aprocess-to-processdatadelivery,errorchecking
Bcongestioncontrol,reliabledatatransfer
Cflowcontrol,congestioncontrol
DIn-orderdatatransfer,errorchecking
7.Portnumber’sscopeis____to____.
A0,1023
B0,65535
C0,127
D0,255
8.Theportnumbersrangingfrom____to____arecalledwell-knownportnumberandarerestricted.
9.UDPsocketidentifiedbytwoponents,theyare____.
AsourceIPaddressesandsourceportnumbers
BsourceIPaddressesanddestinationIPaddresses
CdestinationIPaddressanddestinationportnumbers
Ddestinationportnumbersandsourceportnumbers
10.TCPsocketidentifiedbya(an)____.
A1-tuple
B2-tuple
C3-tuple
D4-tuple
11.WhichofthefollowingapplicationsnormallyusesUDPservices?
ASMTP
BStreamingmultimedia
CFTP
DHTTP
12.
Reliable
data
transfer
protocol
over
a
perfectly
reliable
channel
is____.
A
rdt1.0
B
rdt2.0
C
rdt3.0
D
rdt2.1
13.
with
bit
errors
and
packet
losses
is
____.
14.
Which
of
the
following
about
not
correct?
RDT2.0:
assuming
ACK
NAK
will
be
corrupted
RDT2.1:
can
RDT2.2:
only
use
ACK-s
both
NAK-s
15.
protocols
pipelining
protocols?
TCP
GO-BACK-N
selective
repeat
16.
correct
GBN
protocol?
Only
using
Using
cumulative
Receiver
discards
all
out-of-order
packets
It
pipelined
17.
SR
receiver
individually
acknowledges
correctly
received
sender
resends
for
which
limits
sequence
number
sent
but
un-ACK-ed
protocol
18.WhichofthefollowingaboutTCPconnectionisnotcorrect?
AItisabroadcastconnection
BItisapoint-to-pointconnection
CItisapipelinedconnection
DItisafullduplexconnection
19.TheSYNsegmentisusedfor____.
ATCPconnectionsetup
BTCPflowcontrol
CTCPcongestioncontrol
DClosingaTCPconnection
20.TheFINsegmentisusedfor____.
21.HowdoesTCPsenderperceivecongestion?
AThroughatimeoutevent
BThroughareceivingduplicateACK-sevent
CBothAandB
DEitherAorB
22.Extendinghost-to-hostdeliverytoprocess-to-processdeliveryiscalledtransport-layer____and.
Amultiplexingandde-multiplexing
Bstoringandforwarding
Cforwardingandfiltering
Dswitchingandrouting
23.UDPisa____servicewhileTCPisaconnection-orientedservice.
AConnectionless
BReliable
CConnection-oriented
DIn-order
24.TheUDPheaderhasonlyfourfields,theyare____.
ASourceportnumber,destinationportnumber,lengthandchecksum
BSourceportnumber,destinationportnumber,sourceIPanddestinationIP
CsourceIP,destinationIP,sourceMACaddressanddestinationMACaddress
DsourceIP,destinationIP,sequencenumberandACKsequencenumber
25.Therearetwo16-bitintegers:
1110011001100110,1101010101010101.Theirchecksumis____.
A010*********
B1011101110111100
C111111*********1
D1000000000000000
26.Themaximumamountofdatathatcanbegrabbedandplacedinasegmentislimitedbythe____.
AMaximumsegmentsize(MSS)
BMTU
CChecksum
DSequencenumber
27.TheMSSistypicallysetbyfirstdeterminingthelengthofthelargestlink-layerframethatcanbesentbythelocalsendinghost----theso-called____.
AMaximumtransmissionunit(MTU)
BMSS
28.AFilesizeof500,000bytes,MSSequals1000bytes.WhenwewanttotransmitthisfilewithTCP,thesequencenumberofthefirstsegmentis0,andthesequencenumberofthesecondsegmentis____.
A1000
B99
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- 计算机网络 英文 试题库 答案 chapter3