1. policy 度點 set 內容警告 既野, 不過淨係限制到ie
user configuration- >Windows Setting- >Internet Explore Maintenance- >Security- >Security Zone Content Ratings
2. Set proxy
user configuration- >Windows Setting- >Internet Explore Maintenance
============
知道學生平時上咩野網既方法:
- 如果有firewall而隻firewall又有得set log既話係可以set到既
- 如果係用proxy上網既係proxy度搞就會方便d
==========
Q:
比如我block 左 http://www.facebook.com 咁學生用呢個網址就上唔到facebook
但係有d學生識用https://www.facebook.com 去 login...
咁我都唔想比人用https://www.facebook.com 去login facebook 咁我應該要點做先得?
A:
你可以試下block www.facebook.com
最好就block *facebook.com
咁就會連冇www.都可以block到
星期五, 8月 21, 2009
星期四, 8月 20, 2009
在麥當勞見網友的十大理由
1、價格不會太高，檔次不會太低。
2、既然是快餐，遇到青蛙男或恐龍妹時可以馬上打包走人，遇到美眉或帥哥也可以慢慢吃！
3、味道全球統一，不會吃不慣。
4、衛生情況還可以，不會有吃到蒼蠅、蟑螂、老鼠等的尷尬場面。
5、人比較多，遇到青蛙男或恐龍妹想開溜時還可以很有風度地說：「我們走吧，把位置讓給別人！」
6、絕對不會有人酗酒鬧事，最多就是小朋友搗亂，易於保護美眉，特別對瘦弱的男生來說，是一個不錯的選擇。
7、屬於一個地方的標誌性建築，容易找，特別對方向感比較差的美眉來說，在麥當勞見面是一個不錯的選擇。
8、受《第一次親密接觸》毒害太深！
9、不用花很多時間去研究該吃什麼才好。
10、遇到糾紛不會出人命，最多是一杯可樂從頭淋到腳。(吃西餐時可能會飛過來一把刀，吃中餐時可能會一雙筷子向眼睛插過來，如果躲閃不及的話……)
2、既然是快餐，遇到青蛙男或恐龍妹時可以馬上打包走人，遇到美眉或帥哥也可以慢慢吃！
3、味道全球統一，不會吃不慣。
4、衛生情況還可以，不會有吃到蒼蠅、蟑螂、老鼠等的尷尬場面。
5、人比較多，遇到青蛙男或恐龍妹想開溜時還可以很有風度地說：「我們走吧，把位置讓給別人！」
6、絕對不會有人酗酒鬧事，最多就是小朋友搗亂，易於保護美眉，特別對瘦弱的男生來說，是一個不錯的選擇。
7、屬於一個地方的標誌性建築，容易找，特別對方向感比較差的美眉來說，在麥當勞見面是一個不錯的選擇。
8、受《第一次親密接觸》毒害太深！
9、不用花很多時間去研究該吃什麼才好。
10、遇到糾紛不會出人命，最多是一杯可樂從頭淋到腳。(吃西餐時可能會飛過來一把刀，吃中餐時可能會一雙筷子向眼睛插過來，如果躲閃不及的話……)
星期三, 8月 19, 2009
老公很強的真相
有一對已結婚一段時間的夫妻在性方面已經沒什麼興趣，可以說粉不幸福，
老婆也無法滿足，後來老婆就去找了心理醫師治療，回來第一天晚上老婆穿著性感衣服真的粉惹火，
兩人就過了快樂的一夜，第二天老婆更是火辣辣，兩人又過了風起雲湧的一夜，
老公就覺得很好奇，第三天晚上就偷偷的看老婆在做什麼？？
只見老婆對著鏡子大喊：我很年輕！我很年輕！
後來老公覺得心理醫師很有效，也跑去看心理醫師，回來第一天晚上只見老公有如猛虎出岬，
堅挺不拔，讓老婆很 High 第二天老公依然像超人般欲罷不能，搞的老婆有一點受不了，
老婆就覺得很訝異，第三天晚上就偷偷的看老公在做什麼？？
只見老公對著鏡子大喊：[她不是我老婆！她不是我老婆！ ]
老婆也無法滿足，後來老婆就去找了心理醫師治療，回來第一天晚上老婆穿著性感衣服真的粉惹火，
兩人就過了快樂的一夜，第二天老婆更是火辣辣，兩人又過了風起雲湧的一夜，
老公就覺得很好奇，第三天晚上就偷偷的看老婆在做什麼？？
只見老婆對著鏡子大喊：我很年輕！我很年輕！
後來老公覺得心理醫師很有效，也跑去看心理醫師，回來第一天晚上只見老公有如猛虎出岬，
堅挺不拔，讓老婆很 High 第二天老公依然像超人般欲罷不能，搞的老婆有一點受不了，
老婆就覺得很訝異，第三天晚上就偷偷的看老公在做什麼？？
只見老公對著鏡子大喊：[她不是我老婆！她不是我老婆！ ]
星期五, 8月 07, 2009
小學六年級中文科閱讀工作紙 - 在進入自己的家園前須先取得警署簽發的通行證？
小學六年級中文科閱讀工作紙
請先細閲下面的文字，然後回答問題。
你有沒有想過，在進入自己的家園前，須先取得警署簽發的通行證？這種事情你可能覺得不可思議，但的確發生在新界一些村落的居民身上。 1898年，中國和英國簽訂<<展拓香港界址專條>>，專條內容為中國允許英國租借九龍界限街以北、深圳河以南的地方，為期99年。期間，深圳河兩岸的居民依然可以自由往來。直至1951年，香港的非法入境問題惡化，跨境罪案上升，當時的香港政府便沿著新界北部邊境設立禁區，作為緩衝地帶。無論是當地居民或訪客，凡進入禁區都要辦理「通行證」。 在禁區範圍內，最著名的要數沙頭角的中英街。在專條簽訂翌年，中英正式勘定新界北部邊界，沿一條河的河床把沙頭角分割為「華界」與「英界」兩部份。後來，河床淤塞、乾涸，形成一條長約250米，寬約3、4米的小路。人們在小路兩側搭建房屋、商店，中英街的雛形出現了。 中英街的街心沒有圍欄，只以若干界碑分開兩地，並由香港和深圳兩地政府共同管理，形成「一街兩制」的獨特景象。在香港回歸前，不少內地民眾前往中英街，體味中英兩個政治體制的差異與融合。80年代起，內地實行改革開放。那時內地的商品選擇少，價錢昂貴；中英街的商品卻價錢廉宜，加上種類齊全，琳瑯滿目，所以吸引了大量內地民眾前去購物。據深圳的統計數字顯示，中英街全盛期的遊客量每天超過10萬人次，場面壯觀。一條歷盡滄桑的小街立時成了聞名全國的「購物天堂」。 隨著香港回歸祖國，中英街漸漸歸於平靜。特區政府實施「個人遊」計劃，讓內地遊客轉而前往香港市區旅遊購物。而內地發展快速，商品供應充足，內地民眾再也無須前往中英街購物了。從門庭若市到門可羅雀，中英街只經歷了短短二十年。 中英街的背景是特殊的，它的繁榮是短暫的，卻成就了它的知名度。近年，特區政府決定將邊境禁區的範圍由約2800公頃縮減至約400公頃。不過，中英街卻不在解禁之列。這條小街的命運如何？還有待時間見證。 |
從文中找出適當的詞語，填在1-2題句子的橫線上，使句子的意思完整。
(1)外公動手術後，病情一直穩定，可今天卻 惡化 起來，令我們擔心不已。
(2)這小店的食物價廉物美，難怪從早上到晚間都是人山人海， 門庭若市 。
根據文章內容，選出最合適的答案，並把代表答案的英文字母填在( )內。
(3) 下列哪一項是第二段的段意？ 3.（ D ）
Ａ 指出禁區的作用。
Ｂ 說明新界北部邊境的治安欠佳。
Ｃ 說明英國租借新界對中英街的歷史意義。
Ｄ 解釋部分新界村民需要使用「通行證」的原因。
(4) 文中哪兩段說明中英街盛衰的情況？ 4.（C ，D ）
Ａ 第二段
Ｂ 第三段
Ｃ 第四段
Ｄ 第五段
E 第六段
(5) 文中第四後，作者引用統計數字的目的是 5.（ C ）
Ａ 說明遊人前往中英街的目的。
Ｂ 解釋中英街聞名全國的原因。
Ｃ 指出中英街遊人絡繹不絕的盛況。
Ｄ 比較中英街在香港回歸前後的不同狀況。
(6) 根據文章內容，下列哪一項是不正確的？ 6.（ C ）
Ａ 中英街位於香港與深圳的邊界上，橫跨兩地。
Ｂ 中英街的知名度與它的歷史背景有關。
Ｃ 中英街目前依然是禁區，禁止市民前往。
Ｄ 中英街有各式商店，居民可在那裡自由購物。
(7) 作者寫這篇文章的主要目的是介紹 7.（A ， B ）
(請選擇兩個正確答案)
Ａ 中英街的歷史。
Ｂ 中英街的發展概況。
Ｃ 香港回歸前後的變化。
Ｄ 中英街跟沙頭角的關係。
E 內地改革開放政策的影響。
星期四, 8月 06, 2009
星期三, 8月 05, 2009
Commands and applications used at layers 1 and 2
1. What would the following command allow you to do?
winipcfg
Capture events relating to data-link layer protocols
Identify a path to a destination device
View IP information for hosts running Windows 9x and Me
View the status of all connected devices and links without querying a DNS server
2. You are a network engineer working to isolate problems at the data-link layer with an end-system running a MAC OS X operating system. You want to view the path a packet takes through the network to 10.215.34.124.
What command allows you to do this?
trace 10.215.34.124
tracert [-d] 10.215.34.124
traceroute 10.215.34.124
track 1 ip route 10.215.34.124
3. Suppose you want to isolate a problem at the data-link layer by sending an echo request packet to the address www.easynomadtravel.com.
What command would allow you to do this?
arp -a
ping www.easynomadtravel.com
show ip interface brief
trace http://ｗｗｗ.easynomadtravel.com/
4. You are a network engineer working to isolate problems at the data-link layer. As part of your troubleshooting strategy, you want to view entries in the ARP table of a Cisco router.
What command allows you to do this?
arp -a
show ip arp
show ip interface brief
show arp table
winipcfg
Capture events relating to data-link layer protocols
Identify a path to a destination device
View IP information for hosts running Windows 9x and Me
View the status of all connected devices and links without querying a DNS server
2. You are a network engineer working to isolate problems at the data-link layer with an end-system running a MAC OS X operating system. You want to view the path a packet takes through the network to 10.215.34.124.
What command allows you to do this?
trace 10.215.34.124
tracert [-d] 10.215.34.124
traceroute 10.215.34.124
track 1 ip route 10.215.34.124
3. Suppose you want to isolate a problem at the data-link layer by sending an echo request packet to the address www.easynomadtravel.com.
What command would allow you to do this?
arp -a
ping www.easynomadtravel.com
show ip interface brief
trace http://ｗｗｗ.easynomadtravel.com/
4. You are a network engineer working to isolate problems at the data-link layer. As part of your troubleshooting strategy, you want to view entries in the ARP table of a Cisco router.
What command allows you to do this?
arp -a
show ip arp
show ip interface brief
show arp table
星期二, 8月 04, 2009
Correcting physical and data-link layer problems
1. Identify the command that will allow the Cisco IOS software to return to the default LMI type on interface Serial 0/1. The LMI command is already set to the LMI type defined jointly by Cisco and three other companies.
Router(config)no frame-relay lmi-type ansi
Router(config-if)#no frame-relay lmi-type ansi
Router(config-if)#no frame-relay lmi-type cisco
Router(config-if)#no frame-relay lmi-type q933a
2. What end-system command would you use to delete a specific entry from an ARP table?
arp -a
arp -d ip-address
arp -s ip-address
arp -a -N interface_address
3. Which of the following commands activates an interface?
arp -d
clock rate
interface
no shutdown
4. What is the default encapsulation type on a synchronous serial interface?
Frame Relay
HDLC
PPP
SLIP
Router(config)no frame-relay lmi-type ansi
Router(config-if)#no frame-relay lmi-type ansi
Router(config-if)#no frame-relay lmi-type cisco
Router(config-if)#no frame-relay lmi-type q933a
2. What end-system command would you use to delete a specific entry from an ARP table?
arp -a
arp -d ip-address
arp -s ip-address
arp -a -N interface_address
3. Which of the following commands activates an interface?
arp -d
clock rate
interface
no shutdown
4. What is the default encapsulation type on a synchronous serial interface?
Frame Relay
HDLC
PPP
SLIP
星期一, 8月 03, 2009
Physical and data-link layer support resources
1. Suppose that you are a network engineer troubleshooting a problem at the physical layer. In doing this, you want to quickly access information about the latest industry standards.
The web sites of which organizations are most likely to provide this information?
ATM Forum
IETF
ITU-T
Microsoft
2. Suppose you are troubleshooting a problem at the data-link layer. You are at the stage of evaluating and documenting the changes you are making.
If you perform a set of problem-solving steps, which are completely unsuccessful, what should you do?
You evaluate and document the changes and the results of each change that you make
You should immediately undo any changes that you have made
You make initial hardware and software configuration changes
You verify that the changes you made actually fixed the problem without introducing any new problems
You verify that you have a valid saved configuration for any device on which you intend to modify the configuration
3. Suppose you are troubleshooting a problem at the data-link layer. You are at the stage of evaluating and documenting the changes you are making and realize that the problem is intermittent.
What should be the next step you perform?
You evaluate and document the changes and the results of each change that you make
You make initial hardware and software configuration changes
You need to wait to see if the problem occurs again before you can evaluate the effect of your changes
You verify that the changes you made actually fixed the problem without introducing any new problems
You verify that you have a valid saved configuration for any device on which you intend to modify the configuration
4. As a general approach when correcting an isolated problem at the physical or data-link layer, what is the first thing you should do?
You evaluate and document the changes and the results of each change that you make
You make initial hardware and software configuration changes
You verify that the changes you made actually fixed the problem without introducing any new problems
You verify that you have a valid saved configuration for any device on which you intend to modify the configuration
5. Which website would you most likely use to find the latest detailed technical documentation about the PPP protocol?
www.apple.com
www.ietf.org
www.linux.org
www.sniffers.com
The web sites of which organizations are most likely to provide this information?
ATM Forum
IETF
ITU-T
Microsoft
2. Suppose you are troubleshooting a problem at the data-link layer. You are at the stage of evaluating and documenting the changes you are making.
If you perform a set of problem-solving steps, which are completely unsuccessful, what should you do?
You evaluate and document the changes and the results of each change that you make
You should immediately undo any changes that you have made
You make initial hardware and software configuration changes
You verify that the changes you made actually fixed the problem without introducing any new problems
You verify that you have a valid saved configuration for any device on which you intend to modify the configuration
3. Suppose you are troubleshooting a problem at the data-link layer. You are at the stage of evaluating and documenting the changes you are making and realize that the problem is intermittent.
What should be the next step you perform?
You evaluate and document the changes and the results of each change that you make
You make initial hardware and software configuration changes
You need to wait to see if the problem occurs again before you can evaluate the effect of your changes
You verify that the changes you made actually fixed the problem without introducing any new problems
You verify that you have a valid saved configuration for any device on which you intend to modify the configuration
4. As a general approach when correcting an isolated problem at the physical or data-link layer, what is the first thing you should do?
You evaluate and document the changes and the results of each change that you make
You make initial hardware and software configuration changes
You verify that the changes you made actually fixed the problem without introducing any new problems
You verify that you have a valid saved configuration for any device on which you intend to modify the configuration
5. Which website would you most likely use to find the latest detailed technical documentation about the PPP protocol?
www.apple.com
www.ietf.org
www.linux.org
www.sniffers.com
星期日, 8月 02, 2009
Isolating problems occurring at layers 1 and 2
1. If you encounter a line protocol down message on a router interface, what is is an indication of?
The IGRP neighbour agencies are operational on that interface
The problem lies with another router
There is a problem with the interface at the data-link layer that prevents it from functioning properly
There is a problem with the interface at the physical layer that prevents it from functioning properly
2. A group of users reports that its connection to the network has gone down due to a problem in either the physical or data-link layer. You check the operational status, errors, and configuration of the affected interfaces. You still have not found the cause of the problem.
Which guideline for isolating a problem at the physical and data-link layers have you omitted?
Checking cable configuration
Disabling Spanning Tree
Verifying the IP address of the default gateway
Viewing TCP information on a host
3. While testing your FastEthernet 0/1 interface, you have noticed some packet loss. What command should you use to isolate this problem?
debug frame-relay lmi
show interface FastEthernet 0/1
show ip interface brief
show running-config interface
4. While working on the FastEthernet 0/1 interface, you realise that it is performing poorly under load. After running a diagnostic, you discover that there are a high number of late collisions recorded. What is this an indication of?
That the duplex configuration may be mismatched
That the interface has lost its connection to the device on the other end of the Ethernet cable
That the interface has restarted itself after an error condition
That there is a problem with the interface at the data-link layer
The IGRP neighbour agencies are operational on that interface
The problem lies with another router
There is a problem with the interface at the data-link layer that prevents it from functioning properly
There is a problem with the interface at the physical layer that prevents it from functioning properly
2. A group of users reports that its connection to the network has gone down due to a problem in either the physical or data-link layer. You check the operational status, errors, and configuration of the affected interfaces. You still have not found the cause of the problem.
Which guideline for isolating a problem at the physical and data-link layers have you omitted?
Checking cable configuration
Disabling Spanning Tree
Verifying the IP address of the default gateway
Viewing TCP information on a host
3. While testing your FastEthernet 0/1 interface, you have noticed some packet loss. What command should you use to isolate this problem?
debug frame-relay lmi
show interface FastEthernet 0/1
show ip interface brief
show running-config interface
4. While working on the FastEthernet 0/1 interface, you realise that it is performing poorly under load. After running a diagnostic, you discover that there are a high number of late collisions recorded. What is this an indication of?
That the duplex configuration may be mismatched
That the interface has lost its connection to the device on the other end of the Ethernet cable
That the interface has restarted itself after an error condition
That there is a problem with the interface at the data-link layer
星期六, 8月 01, 2009
Identifying symptoms of problems at layers 1 and 2
1. Which command output would you most likely see if you had a problem at the physical layer?
Ethernet 0/0 is down, line protocol is down
Invalid command, no available connection
Neighbor 172.10.160.2 (Serial 1/1) is down: holding time expired
Serial 1/0 is up, line protocol is administratively down
2. Identify the true statements regarding the symptoms of data-link layer problems.
Data-link optimization problems are arguably the least common
Framing errors appear
There are large quantities of broadcast traffic
The interface is down, and the line protocol is down
3. Which command output would you most likely see if you had a problem at the data link layer?
Ethernet 0/1 is down, line protocol is down
Interface Serial 1/0, changed state to up
Serial 0/1 is down, line protocol is down
Serial 0/1 is up, line protocol is down
4. You are a network engineer working on a network experiencing problems. You use the ping command to help you isolate the problems.
Identify the ping command output that would indicate the problems are at the data-link layer of the network.
address is 0007.8580.1581
Packets: Sent = 4, Received = 2, Lost = 2 (50% loss)
Tracing route to 172.27.227.9
0 input errors, 0 CRC, 0 frame, 0 overrun
5. If you were investigating problems on the network at the physical layer, which of these would you be likely to see?
Abnormal LEDs
ARP errors
Excessive utilization
Increased buffer failures
6. What commands do you use to verify the ARP cache on a Windows end-system and the ARP table in a Cisco router?
arp -a
arp -s
show arp
show arp table
show arp ip
7. Identify the output from a traceroute that indicates the network is experiencing physical layer problems.
Excessive packet loss
Excessive runts
Increased buffer failures
Line coding errors
Ethernet 0/0 is down, line protocol is down
Invalid command, no available connection
Neighbor 172.10.160.2 (Serial 1/1) is down: holding time expired
Serial 1/0 is up, line protocol is administratively down
2. Identify the true statements regarding the symptoms of data-link layer problems.
Data-link optimization problems are arguably the least common
Framing errors appear
There are large quantities of broadcast traffic
The interface is down, and the line protocol is down
3. Which command output would you most likely see if you had a problem at the data link layer?
Ethernet 0/1 is down, line protocol is down
Interface Serial 1/0, changed state to up
Serial 0/1 is down, line protocol is down
Serial 0/1 is up, line protocol is down
4. You are a network engineer working on a network experiencing problems. You use the ping command to help you isolate the problems.
Identify the ping command output that would indicate the problems are at the data-link layer of the network.
address is 0007.8580.1581
Packets: Sent = 4, Received = 2, Lost = 2 (50% loss)
Tracing route to 172.27.227.9
0 input errors, 0 CRC, 0 frame, 0 overrun
5. If you were investigating problems on the network at the physical layer, which of these would you be likely to see?
Abnormal LEDs
ARP errors
Excessive utilization
Increased buffer failures
6. What commands do you use to verify the ARP cache on a Windows end-system and the ARP table in a Cisco router?
arp -a
arp -s
show arp
show arp table
show arp ip
7. Identify the output from a traceroute that indicates the network is experiencing physical layer problems.
Excessive packet loss
Excessive runts
Increased buffer failures
Line coding errors
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