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外行请教一个台式机主板设计问题

外行请教一个台式机主板设计问题# Hardware - 计算机硬件

i*b2011-08-05 07:08

1 楼

答得很差。
郁闷。
问了
1) 在UNIX里，怎么stop a set of processes, which don't have the same group ID
2) 一个running process， which is supposed to write logs to a file. But
there're no logs in the file. How can I figure out what's going on in the
process.
3) factory design pattern. and singleton design pattern. Asked details...
4) asked my previous projects in details
5) STL map and set. how are they implemented. what's the difference. Why set
is necessary since there's map.
6) 一个developer起了一个进程。但用户登录发现这个进程提供的功能不在

d*e2011-08-05 07:08

2 楼

收到通知，说今年9月30号之后American Express® Membership Rewards®
points不再能够转为OnePass miles
我可以把AmEx积分转到别人的OnePass account吗？费用？
多谢！
Important information about American Express® Membership Rewards®
for OnePass members.
You're receiving this message because we want to keep you informed about
upcoming changes to the OnePass program. If you've earned American Express
174; Membership Rewards® points, you should know that Continental
Airlines' participation in the Membership Rewards® points transfer
program will end after Sept. 30, 2011. Please keep in mind:
• You can transfer Membership Rewards® points into your
OnePass account through Sept. 30, 2011. The opportunity to transfer
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longer be an option after that date.
• Until then, you can convert Membership Rewards® points to
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k*g2011-08-05 07:08

3 楼

如题。谢谢

c*n2011-08-05 07:08

4 楼

请问一下，台式机主板集成WiFi功能的多么？就像集成RJ45口一样伸一根天线
（或者用贴片天线）的
似乎没有看到过多少，我和我身边的朋友如果台式机要wifi，绝大部分时候
还是要搞个无线网卡的。
整合这个有什么技术难度么？从市场角度，能少一根网线，还是有意义的吧。
谢谢科普

p*a2011-08-05 07:08

5 楼

comfort~
Fighting!

a*t2011-08-05 07:08

6 楼

Absolutely yes! if it doesn't work online, please email CSR, they will help
you to do it.
费用不是很确定的说，应该和转给自己一样吧！

g*22011-08-05 07:08

7 楼

所有材料都是复印件。

a*e2011-08-05 07:08

8 楼

没难度，有itx自带的
问题是台式机基本是固定不动的，有线比无线速度快多了，没必要
需要无线的时候，比如装机什么的，接个USB的就是了

【在 c****n 的大作中提到】

: 请问一下，台式机主板集成WiFi功能的多么？就像集成RJ45口一样伸一根天线
: （或者用贴片天线）的
: 似乎没有看到过多少，我和我身边的朋友如果台式机要wifi，绝大部分时候
: 还是要搞个无线网卡的。
: 整合这个有什么技术难度么？从市场角度，能少一根网线，还是有意义的吧。
: 谢谢科普

c*u2011-08-05 07:08

9 楼

当积累经验了

ID
set

【在 i**********b 的大作中提到】

: 答得很差。
: 郁闷。
: 问了
: 1) 在UNIX里，怎么stop a set of processes, which don't have the same group ID
: 2) 一个running process， which is supposed to write logs to a file. But
: there're no logs in the file. How can I figure out what's going on in the
: process.
: 3) factory design pattern. and singleton design pattern. Asked details...
: 4) asked my previous projects in details
: 5) STL map and set. how are they implemented. what's the difference. Why set

m*s2011-08-05 07:08

10 楼

能转给别人？

help

【在 a*****t 的大作中提到】

: Absolutely yes! if it doesn't work online, please email CSR, they will help
: you to do it.
: 费用不是很确定的说，应该和转给自己一样吧！

g*82011-08-05 07:08

11 楼

公证也是交复印件吗？如果是这样，我可以让我父母给我扫描发过来，就不需要邮寄
过来了。

c*n2011-08-05 07:08

12 楼

多谢
现在搬家觉得少根网线舒服得多啊
802.11n速度也不慢
而且router多半在客厅电视机边上，台式机要没个无线功能还真是折腾
请问itx是啥？

【在 a***e 的大作中提到】

: 没难度，有itx自带的
: 问题是台式机基本是固定不动的，有线比无线速度快多了，没必要
: 需要无线的时候，比如装机什么的，接个USB的就是了

s*g2011-08-05 07:08

13 楼

第一个就不会。。。。

a*t2011-08-05 07:08

14 楼

Yeap!
I would suggest you to put others into your account as an additional
cardholder if allowed, just in case! After doing this, your transferring
your points to others doesn't break the rule at all.
Good luck!

B*g2011-08-05 07:08

15 楼

是，发包子

【在 g*********8 的大作中提到】

: 公证也是交复印件吗？如果是这样，我可以让我父母给我扫描发过来，就不需要邮寄
: 过来了。

x*s2011-08-05 07:08

16 楼

5块钱一个usb wifi adapter

【在 c****n 的大作中提到】

: 多谢
: 现在搬家觉得少根网线舒服得多啊
: 802.11n速度也不慢
: 而且router多半在客厅电视机边上，台式机要没个无线功能还真是折腾
: 请问itx是啥？

s*r2011-08-05 07:08

17 楼

bless!
哪个职位问这个.....看来bloomberg问题变化太大了, 都不按照套路出牌

ID
set

【在 i**********b 的大作中提到】

d*e2011-08-05 07:08

18 楼

感谢诸位的回复。

k*g2011-08-05 07:08

19 楼

谢谢了

【在 g******2 的大作中提到】

: 所有材料都是复印件。

a*e2011-08-05 07:08

20 楼

台机本来就线无数，还真不差一根
itx的小主板很多自带无线网卡，那东西就是小，有移动性要求
台机可以先USB N卡将就一下，地方稳定下来了还是得上线给力
俺的router都在分线盒里，家里想接就接哪

【在 c****n 的大作中提到】

: 多谢
: 现在搬家觉得少根网线舒服得多啊
: 802.11n速度也不慢
: 而且router多半在客厅电视机边上，台式机要没个无线功能还真是折腾
: 请问itx是啥？

s*r2011-08-05 07:08

21 楼

可以不可以把他们放到同一个group, 然后把那个group kill掉

【在 s*********g 的大作中提到】

: 第一个就不会。。。。

s*m2011-08-05 07:08

22 楼

可以转给别人，网上直接转，费用和转自己的一样

k*x2011-08-05 07:08

23 楼

可以

【在 g*********8 的大作中提到】

: 公证也是交复印件吗？如果是这样，我可以让我父母给我扫描发过来，就不需要邮寄
: 过来了。

t*t2011-08-05 07:08

24 楼

11n和gigabit差也差不多, 就差10倍的速度吧.

【在 c****n 的大作中提到】

: 多谢
: 现在搬家觉得少根网线舒服得多啊
: 802.11n速度也不慢
: 而且router多半在客厅电视机边上，台式机要没个无线功能还真是折腾
: 请问itx是啥？

i*b2011-08-05 07:08

25 楼

我问了。他们说这些process 不在一个group。
一个一个的kill也不是办法。。。。

【在 s*****r 的大作中提到】

: 可以不可以把他们放到同一个group, 然后把那个group kill掉

b*u2011-08-05 07:08

26 楼

请问co的点能不能给别人买票啊？

;

【在 d**e 的大作中提到】

: 收到通知，说今年9月30号之后American Express® Membership Rewards®
: points不再能够转为OnePass miles
: 我可以把AmEx积分转到别人的OnePass account吗？费用？
: 多谢！
: Important information about American Express® Membership Rewards®
: for OnePass members.
: You're receiving this message because we want to keep you informed about
: upcoming changes to the OnePass program. If you've earned American Express
: 174; Membership Rewards® points, you should know that Continental
: Airlines' participation in the Membership Rewards® points transfer

B*G2011-08-05 07:08

27 楼

档次高点的主板很多都有，我五年前买的Asus P5B delux就带无线网卡，有线千兆双网
卡。

c*u2011-08-05 07:08

28 楼

应该可以用pgrep和pkill

【在 i**********b 的大作中提到】

: 我问了。他们说这些process 不在一个group。
: 一个一个的kill也不是办法。。。。

x*h2011-08-05 07:08

29 楼

直接填别人的帐号和名字？

【在 s*m 的大作中提到】

: 可以转给别人，网上直接转，费用和转自己的一样

c*n2011-08-05 07:08

30 楼

还真不觉得有很多人能即插即用上到gigabit的
大部分普通人家里插根线跑在100M full duplex就不错了:)

【在 t****t 的大作中提到】

: 11n和gigabit差也差不多, 就差10倍的速度吧.

s*g2011-08-05 07:08

31 楼

Design Pattern, System Programing, OOP,全都上了。

s*m2011-08-05 07:08

32 楼

是的

【在 x**h 的大作中提到】

: 直接填别人的帐号和名字？

c*n2011-08-05 07:08

33 楼

台机大部分的线是电源那边过来的吧，拖根尾巴去路由器还是挺烦的
usb卡当然是个选择了，主板集成一个对成本影响也不高吧，我其实就是
想了解一下技术上有没有难度。多谢科普了这个问题的答案。:)

【在 a***e 的大作中提到】

: 台机本来就线无数，还真不差一根
: itx的小主板很多自带无线网卡，那东西就是小，有移动性要求
: 台机可以先USB N卡将就一下，地方稳定下来了还是得上线给力
: 俺的router都在分线盒里，家里想接就接哪

x*32011-08-05 07:08

34 楼

搁我这也只能胡答

ID
set

【在 i**********b 的大作中提到】

t*t2011-08-05 07:08

35 楼

3 years ago maybe you are right. now almost every new computer got gigabit.
it's integrated in new PCH anyway.

【在 c****n 的大作中提到】

: 还真不觉得有很多人能即插即用上到gigabit的
: 大部分普通人家里插根线跑在100M full duplex就不错了:)

r*u2011-08-05 07:08

36 楼

都是很实际的问题，没做过这些的真答不上。5怎么答？set少用space？

ID
set

【在 i**********b 的大作中提到】

a92011-08-05 07:08

37 楼

10倍还小啊。

【在 t****t 的大作中提到】

: 11n和gigabit差也差不多, 就差10倍的速度吧.

g*12011-08-05 07:08

38 楼

set has no value only key.

t*t2011-08-05 07:08

39 楼

no, if the mobo vendor could eliminate one chip they would be very happy to
do it. the margin of electronic products are already quite small. besides,
you need an external antenna stick out of your case, which is a separate
stuff in your mobo box. it has much higher impact on the cost than you think
. business customers won't need that anyway.
there is no technical difficulty though.

【在 c****n 的大作中提到】

: 台机大部分的线是电源那边过来的吧，拖根尾巴去路由器还是挺烦的
: usb卡当然是个选择了，主板集成一个对成本影响也不高吧，我其实就是
: 想了解一下技术上有没有难度。多谢科普了这个问题的答案。:)

q*u2011-08-05 07:08

40 楼

2如何答？
６的话是不是应该看log, 我遇到的情况是，java app的过大导致tomcat突然断了，然
后看log,发现是heap mem over flow.
３这个老问题，我答factory的问题的时候都是说generate a new object for future
use, e.g, create a HibernateFactory generating new hibernate session
singleton，
class A{
private static MyObj my;
static{
my = new MyObj();
}
}
5的话，　map是还带一个值，属于键值对（key-value pair）
1看来是pkill,土了，直到看了后面有人说了

答得很差。
郁闷。
问了
1) 在UNIX里，怎么stop a set of processes, which don't have the same group ID
2) 一个running process， which

【在 i**********b 的大作中提到】

t*t2011-08-05 07:08

41 楼

i think it's more than 10 times anyway...the important thing is, wired
ethernet always has dedicated link and full duplex. all wireless share one
link and is at most half duplex.

【在 a9 的大作中提到】

: 10倍还小啊。

i*b2011-08-05 07:08

42 楼

I answered that. That's not the good answer.
But they said the extra space is not a big issue. I wasn't able to tell what
other issues.

【在 r**u 的大作中提到】

: 都是很实际的问题，没做过这些的真答不上。5怎么答？set少用space？
:
: ID
: set

c*n2011-08-05 07:08

43 楼

but the router may not have gigabit
esp for home users, they often use wireless router with several
10/100M wired ports. the cable wire may not be able to support gigabit
either
that's what i mean by "普通人家里插根线跑在100M full duplex就不错了" :)

.

【在 t****t 的大作中提到】

: 3 years ago maybe you are right. now almost every new computer got gigabit.
: it's integrated in new PCH anyway.

i*b2011-08-05 07:08

44 楼

2如何答？
６的话是不是应该看log, 我遇到的情况是，java app的过大导致tomcat突然断了，然
后看log,发现是heap mem over flow.

t*t2011-08-05 07:08

45 楼

oh, it's same for 11n vs 11g then --- most router are still 11g. as for
cable, as long as it's cat5 it's fine. cat3 won't work for long distance
though.
even considering this, 100base-tx is still fast than 11n... maybe not 10
times, but 2-3x should be easily.

【在 c****n 的大作中提到】

: but the router may not have gigabit
: esp for home users, they often use wireless router with several
: 10/100M wired ports. the cable wire may not be able to support gigabit
: either
: that's what i mean by "普通人家里插根线跑在100M full duplex就不错了" :)
:
: .

g*12011-08-05 07:08

46 楼

map and set 的数据结构可能不一样，一个像tree，一个像hush table.我不确定，有
没有专业人士解释一下

c*n2011-08-05 07:08

47 楼

sure. :) most ppl in this board are tech verse. (you are far better than me
tho) my comments are for average users
anyway, do you notice unstability of 802.11n in metal-concrete buildings?
I bought one for my home in China, it works poorly with my laptop. signal
strength very weak from reading room to living room (around 15m NLOS)

【在 t****t 的大作中提到】

: oh, it's same for 11n vs 11g then --- most router are still 11g. as for
: cable, as long as it's cat5 it's fine. cat3 won't work for long distance
: though.
: even considering this, 100base-tx is still fast than 11n... maybe not 10
: times, but 2-3x should be easily.

q*u2011-08-05 07:08

48 楼

bloomberg是有时候喜欢拿interviewee开心。
我上次的题目是：
如果把现有的c++程序，拿javascript来写，会有啥问题。
其实这些实际情况很强的题目，各人有各人的理解，超级理解你的感受。

2如何答？
６的话是不是应该看log, 我遇到的情况是，java app的过大导致tomcat突然断了，然
后看log,发现是heap mem over flow.

【在 i**********b 的大作中提到】

: 2如何答？
: ６的话是不是应该看log, 我遇到的情况是，java app的过大导致tomcat突然断了，然
: 后看log,发现是heap mem over flow.

t*t2011-08-05 07:08

49 楼

i am not wireless expert, but 5G is worse than 2.4G in penetration. 11g use
the same 2.4G, but 11n should benefit from MIMO. so 11n shouldn't be worse
than 11g in penetration unless you use 5G exclusively.

me

【在 c****n 的大作中提到】

: sure. :) most ppl in this board are tech verse. (you are far better than me
: tho) my comments are for average users
: anyway, do you notice unstability of 802.11n in metal-concrete buildings?
: I bought one for my home in China, it works poorly with my laptop. signal
: strength very weak from reading room to living room (around 15m NLOS)

r*t2011-08-05 07:08

50 楼

what
set s;里面的T可以是各种各样的泛型类型。比如说T可以是pair........
但是map里面的分别只能是一种简单的类型。

【在 i**********b 的大作中提到】

: I answered that. That's not the good answer.
: But they said the extra space is not a big issue. I wasn't able to tell what
: other issues.

c*n2011-08-05 07:08

51 楼

nowadays the router is dummy-proof, not many configuration options
the default setting just performs poorly and i cannot make it better
i was guessing that the poor performance is because of MIMO beam forming
not sure tho...

use
signal

【在 t****t 的大作中提到】

: i am not wireless expert, but 5G is worse than 2.4G in penetration. 11g use
: the same 2.4G, but 11n should benefit from MIMO. so 11n shouldn't be worse
: than 11g in penetration unless you use 5G exclusively.
:
: me

r*u2011-08-05 07:08

52 楼

我的面经：
（1）简单说了一下research
(2) do u you multi-threading? Yes. I use openMP and pthread.
(3） how do you synchronize with pthread? pthread has mutex and conditional
variable.
(4) when to use conditional variable? (never use it and forget the concept)
"when waiting for some condition to happen" （这不费话么）
(5) you have a functions A and B, both will request resource x and y, what
could happen?
deadlock.
(6) how to avoid it? "f***, how would i know" (use reentry mutex: wrong...)
在很多提示之后，终于明白

【在 i**********b 的大作中提到】

t*t2011-08-05 07:08

53 楼

lol, beam forming is smarter than this.

【在 c****n 的大作中提到】

: nowadays the router is dummy-proof, not many configuration options
: the default setting just performs poorly and i cannot make it better
: i was guessing that the poor performance is because of MIMO beam forming
: not sure tho...
:
: use
: signal

i*b2011-08-05 07:08

54 楼

这个不对呀。
map key value 都可以是class

...

【在 r********t 的大作中提到】

:
: what
: set s;里面的T可以是各种各样的泛型类型。比如说T可以是pair........
: 但是map里面的分别只能是一种简单的类型。