stub区域和totally stub的主要差别?
一、stub区域和totally stub的主要差别?
1、作用机理不同:
stub :当用于生成虚拟设备驱动程序 (VxD) 的模块定义文件时,STUB 允许指定包含将在 VxD 中使用的 IMAGE_DOS_HEADER 结构(在 WINNT.H 中定义)而不是默认头的文件。
totally stub:在R1上将area 1设置为stub area;在R2上设置area 1为Totally Stub Area, 使得R2 (ABR) 变成通往Area1 以外的默认网关。
nssa:目前因特网中应用最为广泛一种IGP,而NSSA则是在该协议发展过程中产生的一种新的属性。
LSA:被路由器接收用于维护路由选择表。
2、使用的方式不同:
stub :末梢网络,网络的边缘,即一个只有一条出路的网络,所有信息都由一个出口,大大简化了网络配置,也省去了路由器对信息的查询处理。
totally stub:在R3和R4上运行RIP,然后在R1,R2,R3上运行OSPF协议,并设置R3使得OSPF与RIP能交换路径信息。- R1, R2, R3分别产生了自己的Router LSA (type 1)。- R2是ABR,还产生2条Network Summary LSA (type 3)。
nssa:该算法从“立体”的角度来看待网络,每一台路由器都理解全局网络的拓扑结构,并依据此来计算路由,由于每台路由器对网络的整体情况“一切尽在掌握”,所以自环的问题被这彻底的解决。
LSA:最基本的LSA通告列出了路由器所有的链路或接口,并指明了状态和沿每条链路方向出站的开销,以及该链路上所有已知的OSPF邻居。
二、stub区域和totally stub的作用和区别?
1、区域不同OSPFSTUB区域是一个末梢区域,当一个OSPF区域处于整个自治系统边界时,而又不含其他路由协议,这时就可以配置OSPF Stub区域。OSPF路由协议是目前因特网中应用最为广泛一种IGP,而NSSA则是在该协议发展过程中产生的一种新的属性。在NSSA区域内的所有路由器必须支持该属性,而自治系统中的其他路由器则不需要。
2、作用不同当配置OSPF Stub区域后,Stub区域中的路由器会增加一条至ABR的默认路由条目,当在ABR上配置了完全末梢区域后,末梢区域的其他路由器的路由条目除了直连的路由条目外,只有一条到达ABR的路由条目默认路由,不会学习其他区域的路由条目,到其他区域的数据包通过ABR转发。STUB区域虽然为合理的规划网络描绘了美好的前景,但她在实际的组网中又不具备可操作性,未免遗憾。但此时的OSPF协议已经基本成型,不可能再做大的修改。为了弥补缺陷,协议设计者提出了一种新的概念NSSA,并且作为OSPF协议的一种扩展属性单独在RFC 1587中描述。
3、工作原理不同所有位于 stub area 的路由器必须保持 LSDB 信息同步,并且它们会在它的 Hello包中设置一个值为 0 的 E 位(E-bit),因此这些路由器是不会接收 E 位为 1 的 Hello包。自治系统外的ASE路由不可以进入到NSSA区域中,但是NSSA区域内的路由器引入的ASE路由可以在NSSA中传播并发送到区域之外。
三、stub是什么材料?
stub是镀铜短线柱材料。化学镀铜是电路板制造中的一种工艺,通常也叫沉铜或孔化(PTH)是一种自身催化性氧化还原反应。
首先用活化剂处理,使绝缘基材表面吸附上一层活性的粒子通常用的是金属钯粒子(钯是一种十分昂贵的金属,价格高且一直在上升,为降低成本现在国外有实用胶体铜工艺在运行),铜离子首先在这些活性的金属钯粒子上被还原,而这些被还原的金属铜晶核本身又成为铜离子的催化层,使铜的还原反应继续在这些新的铜晶核表面上进行。
四、stub acme螺纹标准?
由于牙型不同两种标准不能通用。NPT3/8“螺纹每英寸18牙,螺距为25.4/18=1.411,基准平面内大径17.055、中径15.926、小径14.797;Rc3/8螺纹每英寸19牙,螺距为1.337;基准平面内大径16.662;中径15.806小径14.95。详细尺查标准。
五、「stub span」和「stub or strap mount」分别怎样翻译?
stub没有壳体的意思啊,怀疑是指电机轴的轴端。你能看到图,可以确认一下。stub span也许是从轴端到壳体的距离。stub or strap mount 应该是指 “轴端或皮带的支架”。电机和泵(或其它设备)可以轴对轴对接,也可以用皮带来带动,所以用or。不过皮带一定是套在轴端上的,所以实际上应该还是指轴端的支架。
六、STUB ACME是什么螺纹?
1、STUB ACME是矮牙爱克母罗纹,用在空间受限制的特殊场合。
2、螺纹是在圆柱或圆锥母体表面上制出的螺旋线形的、具有特定截面的连续凸起部分。螺纹按其母体形状分为圆柱螺纹和圆锥螺纹;按其在母体所处位置分为外螺纹、内螺纹,按其截面形状(牙型)分为三角形螺纹、矩形螺纹、梯形螺纹、锯齿形螺纹及其他特殊形状螺纹。
七、stub acme螺纹基本尺寸?
基本尺寸为:大径d、小径d1、螺距p、螺旋角φ,其中大径d和螺距p为基本尺寸,小径d1和螺旋角φ为附加尺寸。对于标准的Stub ACME螺纹,其基本公制尺寸如下:大径d=25.4/n-0.0069314n,其中n为螺距,以毫米表示;小径d1=0.8d;螺距p=1.0824/n;螺旋角φ=29°。 Stub ACME螺纹通常应用于压力容器和工业泵阀等领域,对于设计师和制造商来说,理解正确的螺纹尺寸和规格是非常重要的。因为当选用不正确的螺纹尺寸时,可导致组件之间的连接不紧或松动等问题,严重影响产品的质量和使用效果。
八、Understanding the Meaning of Check Stub in Finance
A check stub, also known as a paycheck stub or a pay stub, is a financial document that provides detailed information about an employee's earnings and deductions. It serves as a record of the employee's compensation and is commonly attached to a physical paycheck or included in an electronic payroll system.
Key Elements of a Check Stub
A typical check stub contains various important details that help both employers and employees to keep track of their financial transactions and understand their income breakdown. These elements include:
- Employee Information: The check stub includes the employee's name, address, and sometimes the employee identification number.
- Earnings: This section displays the employee's gross earnings, including regular wages, overtime pay, commissions, bonuses, or any other income received during the pay period.
- Deductions: Deductions on a check stub cover various items, such as taxes, social security contributions, health insurance premiums, retirement plan contributions, and any other withholdings agreed upon by the employee and the employer.
- Net Pay: The net pay represents the amount of money an employee actually receives after deductions have been subtracted from their gross earnings. It is the final amount reflected on the paycheck.
- Year-to-Date (YTD) Totals: The check stub provides a summary of the employee's earnings and deductions accumulated from the beginning of the year to the present pay period. This information is useful for both tax filing purposes and personal finance management.
The Importance of Check Stubs
Check stubs play a crucial role in ensuring transparency and efficiency in the payroll process. They benefit both employers and employees in the following ways:
- Income Verification: Check stubs serve as proof of income when employees apply for loans, mortgages, or rental agreements. Lenders or landlords often require this documentation to assess an individual's financial stability and ability to meet financial obligations.
- Financial Planning: With detailed information about earnings and deductions, employees can gain a better understanding of their spending habits and make informed decisions about budgeting and saving.
- Tax Reporting: Check stubs provide valuable information needed for accurate tax filing. They summarize withholdings, deductions, and other relevant financial data that individuals may need to report when filling out their tax returns.
- Dispute Resolution: In the event of a payroll discrepancy or dispute, check stubs provide a clear reference point for employees and employers to identify and resolve any issues related to earnings or deductions.
In Summary
A check stub is a financial document that outlines an employee's earnings, deductions, and net pay for a specific pay period. It serves as an essential record for both employers and employees to track income, manage finances, meet legal requirements, and ensure transparency in the payroll process. Understanding the information presented on a check stub can provide individuals with valuable insights into their financial situation and help them make informed decisions regarding budgeting, savings, and tax reporting.
Thank you for taking the time to read this article and gain a deeper understanding of the meaning and significance of check stubs in finance. We hope this information proves helpful in managing your personal finances and navigating the complexities of the payroll system.
九、stub end是什么管件?
stub end 就是松套法兰的翻边松套件,不带法兰的一端。
十、com.stub.plugin是什么?
obs是一款直播软件。 目前市面上同类软件很多,比如此刻主播助手就比obs更好用。 obs-studio是obs的另一款版本。 plugin的意思是直播辅助插件。比如自动答谢、弹幕点歌等。 这些插件在此刻主播助手的插件库即可找到