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JDownloader也是一個免費空間下載的工具。
JDownloader特別的地方,就是使用java撰寫的,而java的好處就是跨平台使用,因此這個免費空間的下載工具在MAC或是Linux的作業平台下都可以使用唷!
JDownloader的設定功能也很全面,除了一般的檔案下載之外,有些免費空間還提供付費的使用者登入帳號,讓下載可以更加的方便。
以Badongo為例,如果不是特級會員(Premium Member),下載過程中會遇到很多跳出廣告,若你使用這個工具就不會看到廣告,並且會自動略過驗證碼,另外還支援許多免費檔案空間的下載,是非常實用又方便的工具。
本站目前提供windows版本下載!
● 下載
JDownloader 0.9.579.7z(免費空間下載)
2009年11月29日 星期日
2009年11月26日 星期四
網路商店必須創新求變才不易被淘汰
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網路商店必須創新求變才不易被淘汰
很多人在網路上賣東西,
2009年的電子商務市場統計只有49.7%業者損益平衡,
或有獲利,
也就是超過一半業者還是經營不善。
網路開店超夯,
根據資策會調查,國內電子商店有2萬5千家,
今年B2C商務市場規模有1076億元,
營業成長早已超越實體店舖。
問題來了,
很多人會上網賣東西,但卻不一定賺錢,
2萬5千家電子商店,只有49.7%業者損益平衡,
或有獲利,
因此,
網路開店必須有經營特色或特殊獲利模式才較能存活。
.
.
.
網路商店必須創新求變才不易被淘汰
很多人在網路上賣東西,
2009年的電子商務市場統計只有49.7%業者損益平衡,
或有獲利,
也就是超過一半業者還是經營不善。
網路開店超夯,
根據資策會調查,國內電子商店有2萬5千家,
今年B2C商務市場規模有1076億元,
營業成長早已超越實體店舖。
問題來了,
很多人會上網賣東西,但卻不一定賺錢,
2萬5千家電子商店,只有49.7%業者損益平衡,
或有獲利,
因此,
網路開店必須有經營特色或特殊獲利模式才較能存活。
.
.
馬上按讚 加入 [兔兔電腦教室] 粉絲團
2009年11月25日 星期三
DNS 設定-A CNAME MX NS 說明
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DNS 設定,A CNAME MX NS AAAA PTR 說明
DNS資源紀錄(Resource Record)介紹
DNS server內的每一個網域名稱都有自己的檔案,這個檔案一般會稱為區域檔案 (zone file) ,
例如”named.ca”或”named.local” 檔案…等等。
區域檔案是由多個記錄組成的,每一個記錄稱為資源記錄(Resource Record,簡稱RR) 。
在設定DNS名稱解析、反向解析及其他的管理目的時,您需要使用不同類型的RR(資源紀錄Resource Record),底下將介紹常用的RR類型及表示法。
NS
name server,用來指定操作的DNS伺服器主機名稱,需注意的是不可以IP位址表示。
A NS record, sometimes called a glue record, allows you to delegate authority for a hostname to another name server. You need to know the hostname of the name server you wish to delegate authority to.
例:
IN NS dns.bonny.com.tw.
A
address,將DNS網域名稱對應到IPv4的32位元位址。
An A record can point a host name to an IP address. To point just 22ace.com to an IP address, leave the "Record Host" field blank. To point www.22ace.com to an IP address enter www into the "Record Host" field. To point all sub domains for 22ace.com that do not already have a host record to an IP address enter * into the "Record Host" field. You can add multiple host records for a domain name.
例:
server IN A 59.123.101.61
AAAA
可將DNS網域名稱對應到IPv6的128位元位址。
An IPV6 (AAAA) record can point a host name to an IPV6 IP address. To point just 22ace.com to an IP address, leave the "Record Host" field blank. To point www.22ace.com to an IP address enter www into the "Record Host" field. To point all sub domains for 22ace.com that do not already have a host record to an IP address enter * into the "Record Host" field. You can add multiple host records for a domain name.
例:
bonny.com.tw. 86400 IN AAAA 3ffe: :bbb:93:5
PTR
pointer,定義某個 IP 對應的 domain name,即將 IP 位址轉換成主機的FQDN。
例:
20 IN PTR mail.bonny.com.tw.
CNAME
canonical name,可為同一部主機設定許多別名,例如 mix.twnic.net.tw的別名可為 http://www.bonny.com.tw/和 ftp://ftp.bonny.com.tw/,因此所設定的別名都會連至同一部伺服器。
A CNAME or canonical name record points a hostname with no other records to another valid hostname. The canonical name you use should have no other DNS records associated with it. CNAME's should only be used in a very few instances, for common aliases and host names use an A record instead. If you do not understand what CNAME's are used for, then chances are you should not be using them. The misuse of CNAME records can cause problems with the resolution of your domain name if not used properly.
例:
www IN CNAME mix
MX
mail exchanger,設定區域中擔任郵件伺服器的主機,所有要送往那部機器的 mail 都要經過 mail exchanger 轉送。
而數字則是該主機郵件傳遞時的優先次序,數值越低表示有越高的郵件處理優先權。
MX records are used to deliver email associated with your domain name, such as info@yourdomain.com, to the appropriate mail server, for instance, mail.yourdomain.com.
Name.com Email Service Customers
If you have purchased email service and created email addresses through Name.com, a MX record has been automatically generated for your domain name, and you need do nothing more in order to route email associated with your domain name to our mail server. On the preceding web page, you should see a MX record with yourdomain.com listed as the Record Host and mx0.name.com denoted as the Record Answer.
Third-Party Email Service Customers
If you are using a third-party mail server, create a MX record (on this web page) in which you leave the Host name field blank and enter the name of your third-party mail server into the Mail server field.
Customers Who Provide Their Own Email Service
If you are using your own mail server, you must do the following. First, create a Host record with the name of your mail server, most often mail.yourdomain.com or smtp.yourdomain.com, in the Host name field and the Internet Protocol (IP) address of your mail server in, naturally, the IP address field. Second, make a MX record in which you leave the Host name field blank and enter the name of your mail server, again, mail.yourdomain.com or smtp.yourdomain.com, in the Mail server field.
例:
server IN MX 10 mail.bonny.com.tw.
.
.
.
DNS 設定,A CNAME MX NS AAAA PTR 說明
DNS資源紀錄(Resource Record)介紹
DNS server內的每一個網域名稱都有自己的檔案,這個檔案一般會稱為區域檔案 (zone file) ,
例如”named.ca”或”named.local” 檔案…等等。
區域檔案是由多個記錄組成的,每一個記錄稱為資源記錄(Resource Record,簡稱RR) 。
在設定DNS名稱解析、反向解析及其他的管理目的時,您需要使用不同類型的RR(資源紀錄Resource Record),底下將介紹常用的RR類型及表示法。
NS
name server,用來指定操作的DNS伺服器主機名稱,需注意的是不可以IP位址表示。
A NS record, sometimes called a glue record, allows you to delegate authority for a hostname to another name server. You need to know the hostname of the name server you wish to delegate authority to.
例:
IN NS dns.bonny.com.tw.
A
address,將DNS網域名稱對應到IPv4的32位元位址。
An A record can point a host name to an IP address. To point just 22ace.com to an IP address, leave the "Record Host" field blank. To point www.22ace.com to an IP address enter www into the "Record Host" field. To point all sub domains for 22ace.com that do not already have a host record to an IP address enter * into the "Record Host" field. You can add multiple host records for a domain name.
例:
server IN A 59.123.101.61
AAAA
可將DNS網域名稱對應到IPv6的128位元位址。
An IPV6 (AAAA) record can point a host name to an IPV6 IP address. To point just 22ace.com to an IP address, leave the "Record Host" field blank. To point www.22ace.com to an IP address enter www into the "Record Host" field. To point all sub domains for 22ace.com that do not already have a host record to an IP address enter * into the "Record Host" field. You can add multiple host records for a domain name.
例:
bonny.com.tw. 86400 IN AAAA 3ffe: :bbb:93:5
PTR
pointer,定義某個 IP 對應的 domain name,即將 IP 位址轉換成主機的FQDN。
例:
20 IN PTR mail.bonny.com.tw.
CNAME
canonical name,可為同一部主機設定許多別名,例如 mix.twnic.net.tw的別名可為 http://www.bonny.com.tw/和 ftp://ftp.bonny.com.tw/,因此所設定的別名都會連至同一部伺服器。
A CNAME or canonical name record points a hostname with no other records to another valid hostname. The canonical name you use should have no other DNS records associated with it. CNAME's should only be used in a very few instances, for common aliases and host names use an A record instead. If you do not understand what CNAME's are used for, then chances are you should not be using them. The misuse of CNAME records can cause problems with the resolution of your domain name if not used properly.
例:
www IN CNAME mix
MX
mail exchanger,設定區域中擔任郵件伺服器的主機,所有要送往那部機器的 mail 都要經過 mail exchanger 轉送。
而數字則是該主機郵件傳遞時的優先次序,數值越低表示有越高的郵件處理優先權。
MX records are used to deliver email associated with your domain name, such as info@yourdomain.com, to the appropriate mail server, for instance, mail.yourdomain.com.
Name.com Email Service Customers
If you have purchased email service and created email addresses through Name.com, a MX record has been automatically generated for your domain name, and you need do nothing more in order to route email associated with your domain name to our mail server. On the preceding web page, you should see a MX record with yourdomain.com listed as the Record Host and mx0.name.com denoted as the Record Answer.
Third-Party Email Service Customers
If you are using a third-party mail server, create a MX record (on this web page) in which you leave the Host name field blank and enter the name of your third-party mail server into the Mail server field.
Customers Who Provide Their Own Email Service
If you are using your own mail server, you must do the following. First, create a Host record with the name of your mail server, most often mail.yourdomain.com or smtp.yourdomain.com, in the Host name field and the Internet Protocol (IP) address of your mail server in, naturally, the IP address field. Second, make a MX record in which you leave the Host name field blank and enter the name of your mail server, again, mail.yourdomain.com or smtp.yourdomain.com, in the Mail server field.
例:
server IN MX 10 mail.bonny.com.tw.
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