m**t 发帖数: 1292 | 1 window size 再加个 selective ack
MTU 是LAYER2, 有的主机针对TCP 要设置 MSS, 另外还有ROHC压缩等根据情况选用 |
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x*********n 发帖数: 28013 | 2 这是2家大公司,都签了保密协议,所以我就不能讲原题和名字了,也不要问了,我把
知识点放在一起。以供大家复习。
STP
bridge ID,STP使用细节。HSRP使用中,STP disable了一个口,什么影响?
OSPF
backbone 的设计考虑,2个non-backbone,traffic怎么走(必须经过area0),各个状
态看到什么包,如果不成功,会是什么原因?path selection怎么选,stub看到什么
LSA,NSSA看到什么,为什么?给图形,有broadcast,有unicast,里面的ospf
database是如何的?
BGP
MED怎么改traffic,next-hop的使用(不仅仅是iBGP变不变的问题),sh bgp sum,各
个状态的细节。
VPN
IPsec2个阶段,如何troubleshooting,
L3MPLS-VPN
AS-path可能bring的问题,如何解决(2个),有多少label,RD,RT应用,PE-CE看什
么,6PE怎么回事?如何分发mpls label。cspf 和rsvp不同点,介绍。
TCP
MSS和MTU的区别。t... 阅读全帖 |
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x*********n 发帖数: 28013 | 3 “常用的网络协议都支持pmtu discovery”这个不对。
fragmentation只在TCP讲,TCP上面有6个flag,其中一个bit DF就是给这个pmtu
discovery准备的。所以只要跑TCP,这个就会支持。
by default,一个包发过去,只看interface的容量,interface不到就会丢包
pmtu discovery junos以前版本都是disabled,后续版本才开始by default enabled,
很多别的厂家不用的。这个只有在别的端 device不确定的时候,才用,不然我改TCP
mss就好了。 |
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x*********n 发帖数: 28013 | 4 “常用的网络协议都支持pmtu discovery”这个不对。
fragmentation只在TCP讲,TCP上面有6个flag,其中一个bit DF就是给这个pmtu
discovery准备的。所以只要跑TCP,这个就会支持。
by default,一个包发过去,只看interface的容量,interface不到就会丢包
pmtu discovery junos以前版本都是disabled,后续版本才开始by default enabled,
很多别的厂家不用的。这个只有在别的端 device不确定的时候,才用,不然我改TCP
mss就好了。 |
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l*****r 发帖数: 15615 | 5 what I have is 2 windows home sever with HD movies and TV shows on there.
they both can be accessed as share drives on the home network, and i have
gigabit switch connect between them..
one thing I am concerning is does the media server see all these files, and
also the movies are all in mkv format, with need external Sub or mss
subtitle files, lots of media player don't support chinese subtitles.
you mentioned PBO is gone, so do you still have the media player? Thanks. |
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T******H 发帖数: 629 | 6 之前用過mss,功耗低,但是迅雷之類的不能用,而且傳輸也慢
現在用台老機器core2 6300+2GB內存,win xp可能是內存太不夠大,迅雷有時候還是會
離奇關閉,而且功耗也大
現在計劃配這樣台低功耗的
Intel D525MWV主板(cpu,網卡,顯卡啥都有了) 全板功耗仅为13W
Kingston 2GB*2条DDR3 SO-DIMM内存插槽
250GB的wd老硬盤3.5'
大水牛的s0205機箱
然後裝個xp
有時候還能干點私活,比如放片子,不指望高清啦,壓片子之類甚至首發郵件,看看
word,pdf的,畢竟24小時開機的下載機
大家看看有什麼可以改進的,歡迎討論 |
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e*i 发帖数: 10288 | 7 这玩意儿是不是比seagate的 goflex home还要慢?seagate goflex home 参数和
dockstar是类似的,大概是1.2G CPU, 128MB 内存,Gigabit 网络,goflex home
有sata接口和usb2接口,dockstar就只有usb接口。
Processor : Feroceon 88FR131 rev 1 (v5l)
BogoMIPS : 1191.11
Features : swp half thumb fastmult edsp
CPU implementer : 0x56
CPU architecture: 5TE
CPU variant : 0x2
CPU part : 0x131
CPU revision : 1
Hardware : Seagate GoFlex Home
Revision : 0000
Serial : 0000000000000000
开了一个放了一年多的goflex home 2TB,... 阅读全帖 |
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S*A 发帖数: 7142 | 8 MSSII 的确是比你说的更加旧,配置更低。
换个好的 USB 线。这种 reset 通常受 USB 线的质量
影响很大。 USB 做硬盘本来就不是很快。 |
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e*i 发帖数: 10288 | 9 那根USB线已经大概是我手头最好的了。是WD外置硬盘原配的,粗,短。 (长线怕
电源供应不好,因为那个硬盘是靠usb供电的)。
我前面提到的读写速度(40M Read, 20M write) 是那个SATA 硬盘的。USB2的估计极
限就是28M/s左右吧。 |
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u****s 发帖数: 2186 | 10 MS CS 比较通用一些,找工作面广一些
MS CISS 虽然能学一些security方面的知识,但找工作大概只能找security related的。
其实security公司里的绝大多数员工都不会用到你学的这些东西,反而用的基本都是通
用的CS知识和技术。
学了CISS可以顺便考个CISSP,可以做安全方面的consulating,但一般都要求很多年的
工作经验。或者到MSS(managed security service)方面的公司作business analyst,
operation support之类的工作。
你们那里如果有dual program,尽量两个都学,艺不压身,you never know when they
will be helpful. 比如你要是到security公司应聘,有个CISS degree or CISSP
certificate绝对是个big plus. |
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i*****o 发帖数: 1714 | 11 这个问题已经解决了, 就是改一下ip route default initcwnd, default是3,我改
成20就好了。
关于这个问题的根源我已经说过, 就是linux上对tcp slow start的实现没有按通常的
要求去做。tcp slow start是为了避免congestion,省的一个新的session来了以后,
一下子传太多造成没有必要的drop frame和retransmission。公认的实现是start with
3x mss。就是说ethernet上可以一下子送1500*3 = 4500字节。4500字节对我来说就
是90个voice packet(差不多两秒的通话)足够用的了。可linux上写这个程序的人偷
懒,把slow start定义为start with 3 packets,不管这个packet里有多少字节。这样
我的应用就被卡注了。想想3g network round trip delay差不多在60ms-200ms之间,
200ms就是10个voice packet,可linux只给3个packet,所以就不断的drop frame(
voic... 阅读全帖 |
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n**h 发帖数: 22 | 12 本人在考虑从生物转到CS专业。看到UBC的这个program还不错,只要16个月的时间,包
括4个月实习。有没有哪位比较了解这个program的?毕业后的就业情况怎么样?entry
level的薪水大概能有多少呢?以下是这个program的连接:
http://www.icics.ubc.ca/mss/frameset.html
另外,我也想听听各位关于整个CS行业的就业情况的看法。最近几年CS的就业情况是不
是越来越好了?CS的工作是不是不太稳定,基本上几年就要跳槽一次?
多谢大家了! |
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h**********c 发帖数: 4120 | 13 thanks,
有机会找这本书看看,
看别的谈上讲tcp mss,不知道socket初始的时候能调整不 |
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o******u 发帖数: 117 | 14 小弟现在找工作,偶然发现一美国教授今年新拿的一个RO1的proposal和我现在做的东
西很接近,于是和他联系,他很快回复如下:
Dear xxx,
you have a great CV and would fit well into the lab; however, you probably
couldn't be a post-doc at XXXXX as you are 5 years out from your PHD and
have essentially done to post-docs. Right now I am not sure if I could bring
you on as an associate which is a very junior faculty position. In truth I
am looking for someone like you to run my lab as I probably will end up
being the interim director of the division here. What... 阅读全帖 |
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S*****s 发帖数: 242 | 15 It sounds like this position is in a clinical department and you are
offered a title as instructor. You are really asked to be a lab manager
in a clinical research lab and you are going to deal with clinical
fellows, residents and sometimes junior clinical faculty members who do
not know much about science. The questions in the back is important: Can
you write MSs and help others in the lab? That is your job. Those guys
in the lab do need a lot of help for science and you will need to spend
sign... 阅读全帖 |
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n********k 发帖数: 2818 | 16 no hope, you have to go back to the preschool and educate the american and
many more---the basic math...even it is possible, it would be a generation
away...I am amazed by many biologists who has no math intelligence
whatsoever but are solely possessed by P-value when reviewing data/MSs... |
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n********k 发帖数: 2818 | 17 no hope, you have to go back to the preschool and educate the american and
many more---the basic math...even it is possible, it would be a generation
away...I am amazed by many biologists who has no math intelligence
whatsoever but are solely possessed by P-value when reviewing data/MSs... |
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n********k 发帖数: 2818 | 18 tough experience! but I am not sure this would be a reason to support
professional editors...perhaps you haven't had any MSs turned kicked out of
the door by the professional editors because you are a little potato or
accepted again all the reviewer comments because you are a bull and can make
the call...maybe transparent reviewing processes as being practiced in some
journals might help...
3 |
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b*n 发帖数: 66 | 19 Civil engineers find jobs not related to PhD research, well, the result is a
PhD earns the same level salary as MSs. Why not spend some time passing the
FE exam, and make yourself ready for the real world.
pavement,
,就
力) |
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f******n 发帖数: 176 | 21 He is offering those ideas and the papers finished by his post-docs/PhDs/MSs
or he wrote them as first author? |
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O*********h 发帖数: 140 | 22 请问现在业内通常是如何选择的呢?
通常social science习惯用step-wise看每个variable对explained sum of squares的
贡献。按照这个case,MSS阀值以下的变量就被抛弃了。
抱歉歪了下楼:)我是social science出身,正在学习ML的term和校正对ML一些实现的
理解。 |
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O*********h 发帖数: 140 | 23 请问现在业内通常是如何选择的呢?
通常social science习惯用step-wise看每个variable对explained sum of squares的
贡献。按照这个case,MSS阀值以下的变量就被抛弃了。
抱歉歪了下楼:)我是social science出身,正在学习ML的term和校正对ML一些实现的
理解。 |
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r*********r 发帖数: 1892 | 25 不兼项和跨组会好不少。
感觉华体的rules是为某些人量身订做,不太fair play.所以导致你说的情况:
比如一个对有两个very strong players (超出别人很多),那么有很多选择:
1)1 MSs, 2 Mds, 1 mix+1 other female
2) 2 Mds, 1 mix+1 other female, 1 mix+1 other female
3) 2 Mds, 1 Mds+1 other male, 1 mix+1 other female
etc....
以上组合都有90%chances赢。
象这次,Lilizhou兼两个MXs,再找两个男好手,那是无敌呀,niu/KS/jin他们虽败尤荣
呀.
大家想象一下让韩国组合打两个男双,或付/蔡兼两个男双,Lindan打个第一男单,再
兼个三单,那样的汤姆斯杯会都无趣呀! |
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l*****e 发帖数: 112 | 26 I. Believers at Antioch (1st. century)
A. The believers in Antioch were the first to be called "Christians" (Acts
11:26).
B. Since Antioch is in Syria, they translated the Bible into Old Syrian.
This Bible agrees with the KJB and not the Catholic line of mss.
C. The believers at Antioch copied the Scriptures in both Syrian and Greek
on papyrus (a paper-like material).
II. Believers in Greece (1st.-3rd. century)
A. They used the Greek text of Antioch and rejected the Greek text of
Alexandria Eg |
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