<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[derek1997的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/derek1997</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; derek1997]]></copyright><item><title><![CDATA[软考中级软件设计师高频考点：软件测试阶段、桩与驱动及回归测试]]></title><link>https://blog.youkuaiyun.com/derek1997/article/details/170541022</link><guid>https://blog.youkuaiyun.com/derek1997/article/details/170541022</guid><author>derek1997</author><pubDate>Sat, 14 Nov 2026 09:10:46 +0800</pubDate><description><![CDATA[从测试层次与集成策略出发，实际实现驱动、商品目录桩和支付桩，用相同驱动替换本地真实目录，复现金额单位接口错误，验证确认测试、回归测试及非法输入不触发扣款的边界。]]></description><category></category></item><item><title><![CDATA[软考中级软件设计师高频考点：SQL连接、分组聚合与NULL易错题]]></title><link>https://blog.youkuaiyun.com/derek1997/article/details/170541064</link><guid>https://blog.youkuaiyun.com/derek1997/article/details/170541064</guid><author>derek1997</author><pubDate>Sat, 14 Nov 2026 09:10:17 +0800</pubDate><description><![CDATA[核对原始PDF中的完整连接真题与选项，逐项推导员工、工程、参与关系；用SQLite实跑外连接、分组、COUNT、HAVING、缺失连接键及NULL影响NOT IN与NOT EXISTS的真实结果。]]></description><category></category></item><item><title><![CDATA[软考中级软件设计师高频考点：数据字典、模块扇入扇出与作用范围]]></title><link>https://blog.youkuaiyun.com/derek1997/article/details/170541105</link><guid>https://blog.youkuaiyun.com/derek1997/article/details/170541105</guid><author>derek1997</author><pubDate>Sat, 14 Nov 2026 09:09:51 +0800</pubDate><description><![CDATA[用同一订单业务串起数据字典、加工规则、8种条件组合的判定表和模块职责，通过真实保存分支验证范围边界，并将业务调用图中的扇入扇出与数据流、调用次数区分。]]></description><category></category></item><item><title><![CDATA[软考中级软件设计师高频考点：串并联系统可靠度与可用性计算]]></title><link>https://blog.youkuaiyun.com/derek1997/article/details/170541151</link><guid>https://blog.youkuaiyun.com/derek1997/article/details/170541151</guid><author>derek1997</author><pubDate>Fri, 13 Nov 2026 12:36:24 +0800</pubDate><description><![CDATA[核对完整可靠性真题及原图，以成功事件推导串并联和混联，枚举不同可靠度元件状态，比较三取二、共用电源、切换失败、长期可用性与连续任务可靠度，并验证概率边界。]]></description><category></category></item><item><title><![CDATA[软考中级软件设计师高频考点：串并联系统可靠度与可用性计算]]></title><link>https://blog.youkuaiyun.com/derek1997/article/details/170547113</link><guid>https://blog.youkuaiyun.com/derek1997/article/details/170547113</guid><author>derek1997</author><pubDate>Fri, 13 Nov 2026 12:36:07 +0800</pubDate><description><![CDATA[核对完整可靠性真题及原图，以成功事件推导串并联和混联，枚举不同可靠度元件状态，比较三取二、共用电源、切换失败、长期可用性与连续任务可靠度，并验证概率边界。]]></description><category></category></item><item><title><![CDATA[软考中级软件设计师高频考点：DoS、ARP欺骗与IDS、IPS防御辨析]]></title><link>https://blog.youkuaiyun.com/derek1997/article/details/170546965</link><guid>https://blog.youkuaiyun.com/derek1997/article/details/170546965</guid><author>derek1997</author><pubDate>Fri, 13 Nov 2026 12:35:42 +0800</pubDate><description><![CDATA[结合三道真题辨析攻击目标与防护边界，用同一批合成请求逐条跟踪ACL、IDS、IPS和业务服务的处置结果，核对规则顺序、默认拒绝、流量守恒，以及正常重试误报与低频探测漏检。]]></description><category></category></item><item><title><![CDATA[软考中级软件设计师高频考点：软件测试阶段、桩与驱动及回归测试]]></title><link>https://blog.youkuaiyun.com/derek1997/article/details/170547006</link><guid>https://blog.youkuaiyun.com/derek1997/article/details/170547006</guid><author>derek1997</author><pubDate>Thu, 12 Nov 2026 07:39:13 +0800</pubDate><description><![CDATA[从测试层次与集成策略出发，实际实现驱动、商品目录桩和支付桩，用相同驱动替换本地真实目录，复现金额单位接口错误，验证确认测试、回归测试及非法输入不触发扣款的边界。]]></description><category></category></item><item><title><![CDATA[软考中级软件设计师高频考点：SQL连接、分组聚合与NULL易错题]]></title><link>https://blog.youkuaiyun.com/derek1997/article/details/170547040</link><guid>https://blog.youkuaiyun.com/derek1997/article/details/170547040</guid><author>derek1997</author><pubDate>Thu, 12 Nov 2026 07:38:28 +0800</pubDate><description><![CDATA[核对原始PDF中的完整连接真题与选项，逐项推导员工、工程、参与关系；用SQLite实跑外连接、分组、COUNT、HAVING、缺失连接键及NULL影响NOT IN与NOT EXISTS的真实结果。]]></description><category></category></item><item><title><![CDATA[软考中级软件设计师高频考点：数据字典、模块扇入扇出与作用范围]]></title><link>https://blog.youkuaiyun.com/derek1997/article/details/170547074</link><guid>https://blog.youkuaiyun.com/derek1997/article/details/170547074</guid><author>derek1997</author><pubDate>Thu, 12 Nov 2026 07:37:42 +0800</pubDate><description><![CDATA[用同一订单业务串起数据字典、加工规则、8种条件组合的判定表和模块职责，通过真实保存分支验证范围边界，并将业务调用图中的扇入扇出与数据流、调用次数区分。]]></description><category></category></item><item><title><![CDATA[软考中级软件设计师高频考点：工厂方法与抽象工厂等创建型模式辨析]]></title><link>https://blog.youkuaiyun.com/derek1997/article/details/170429800</link><guid>https://blog.youkuaiyun.com/derek1997/article/details/170429800</guid><author>derek1997</author><pubDate>Wed, 11 Nov 2026 09:05:34 +0800</pubDate><description><![CDATA[从工厂方法与抽象工厂的产品范围入手，对照建造者、原型和单例的设计意图；通过可运行的组件工厂示例与复制实验分析适用条件、扩展代价和常见误区。]]></description><category></category></item><item><title><![CDATA[软考中级软件设计师高频考点：适配器装饰器代理与外观模式辨析]]></title><link>https://blog.youkuaiyun.com/derek1997/article/details/170429849</link><guid>https://blog.youkuaiyun.com/derek1997/article/details/170429849</guid><author>derek1997</author><pubDate>Wed, 11 Nov 2026 09:05:20 +0800</pubDate><description><![CDATA[按接口转换、动态职责、访问控制和子系统封装区分适配器、装饰器、代理、外观与桥接，并用温度传感器示例验证接口转换、调用计数及权限边界。]]></description><category></category></item><item><title><![CDATA[软考中级软件设计师高频考点：CIDR子网划分与最长前缀匹配]]></title><link>https://blog.youkuaiyun.com/derek1997/article/details/170429888</link><guid>https://blog.youkuaiyun.com/derek1997/article/details/170429888</guid><author>derek1997</author><pubDate>Wed, 11 Nov 2026 09:04:52 +0800</pubDate><description><![CDATA[以IPv4地址为例推导CIDR掩码、网络地址、广播地址、可用地址和子网汇总，说明最长前缀匹配与特殊前缀，并用Python标准库复核计算。]]></description><category></category></item><item><title><![CDATA[软考中级软件设计师高频考点：DFA、NFA与正规式识别方法]]></title><link>https://blog.youkuaiyun.com/derek1997/article/details/170430003</link><guid>https://blog.youkuaiyun.com/derek1997/article/details/170430003</guid><author>derek1997</author><pubDate>Tue, 10 Nov 2026 12:37:15 +0800</pubDate><description><![CDATA[围绕以01结尾的二进制串，逐步构造DFA和NFA，讲解状态集合、ε闭包、正规式与整串匹配，并通过Python枚举对照三种识别方式。]]></description><category></category></item><item><title><![CDATA[软考中级软件设计师高频考点：编译过程词法语法语义分析与符号表]]></title><link>https://blog.youkuaiyun.com/derek1997/article/details/170429948</link><guid>https://blog.youkuaiyun.com/derek1997/article/details/170429948</guid><author>derek1997</author><pubDate>Tue, 10 Nov 2026 12:37:01 +0800</pubDate><description><![CDATA[用表达式示例区分词法、语法和语义分析，解释符号表、中间代码与完整构建流程，结合来源明确的题目和可运行示例验证类型检查及错误处理。]]></description><category></category></item><item><title><![CDATA[软考中级软件设计师高频考点：中缀后缀表达式与语法树遍历]]></title><link>https://blog.youkuaiyun.com/derek1997/article/details/170430044</link><guid>https://blog.youkuaiyun.com/derek1997/article/details/170430044</guid><author>derek1997</author><pubDate>Tue, 10 Nov 2026 12:36:45 +0800</pubDate><description><![CDATA[以表达式树推导中缀、前缀和后缀表示，结合来源明确的题目说明优先级和结合性，并用可运行代码检查后缀求值、左右操作数顺序与非法输入。]]></description><category></category></item><item><title><![CDATA[软考中级软件设计师高频考点：责任链与策略模式辨析及行为型模式真题详解（附历年真题·百度网盘）]]></title><link>https://blog.youkuaiyun.com/derek1997/article/details/170347528</link><guid>https://blog.youkuaiyun.com/derek1997/article/details/170347528</guid><author>derek1997</author><pubDate>Mon, 09 Nov 2026 15:27:29 +0800</pubDate><description><![CDATA[结合日志责任链与促销策略两个完整Python案例，讲解请求传递、算法替换和行为型对象模式的判断方法。提供运行环境、真实输出、阈值和满减边界验证，并按原卷文字解析相关真题。]]></description><category></category></item><item><title><![CDATA[软考中级软件设计师高频考点：段页式地址转换与FIFO LRU页面置换计算及真题详解（附历年真题·百度网盘）]]></title><link>https://blog.youkuaiyun.com/derek1997/article/details/170347617</link><guid>https://blog.youkuaiyun.com/derek1997/article/details/170347617</guid><author>derek1997</author><pubDate>Mon, 09 Nov 2026 15:26:50 +0800</pubDate><description><![CDATA[从页号和偏移拆分推导分页及段页式地址转换，说明TLB与访存次数的前提。用完整Python程序实跑FIFO、LRU、OPT，对照缺页与淘汰序列、8KiB跨页边界及Belady异常，并解析可定位来源的真题。]]></description><category></category></item><item><title><![CDATA[软考中级软件设计师高频考点：单一职责开闭接口分离与里氏替换设计原则及真题详解（附历年真题·百度网盘）]]></title><link>https://blog.youkuaiyun.com/derek1997/article/details/169841308</link><guid>https://blog.youkuaiyun.com/derek1997/article/details/169841308</guid><author>derek1997</author><pubDate>Sun, 08 Nov 2026 07:49:22 +0800</pubDate><description><![CDATA[本文系统梳理软考中级软件设计师高频考点——面向对象五大设计原则（单一职责、开闭、里氏替换、接口分离、依赖倒置），通过“题干原话”精准匹配、对比图示辨析易混点，并以Python代码实证“胖接口”问题及修复过程。结合2021-2022年真题解析，强调“首句定性”“背原话不背缩写”应试策略，助力考生高效掌握核心知识点，提升机考解题准确率。]]></description><category></category></item><item><title><![CDATA[软考中级软件设计师高频考点：封装继承多态与动态绑定过载多态及真题详解（附历年真题·百度网盘）]]></title><link>https://blog.youkuaiyun.com/derek1997/article/details/169839011</link><guid>https://blog.youkuaiyun.com/derek1997/article/details/169839011</guid><author>derek1997</author><pubDate>Sun, 08 Nov 2026 07:48:59 +0800</pubDate><description><![CDATA[本文系统解析软考中级软件设计师高频考点——面向对象三大特性封装、继承、多态，以及动态绑定与四类多态（过载、强制、包含、参数）的辨析。用对照表区分「运行期动态绑定」与「编译期过载绑定」，并结合真题演示如何判断一段代码中调用的是父类还是子类方法，帮助考生把握 OOP 题目的核心判据。]]></description><category></category></item><item><title><![CDATA[软考中级软件设计师高频考点：黑盒测试等价类划分与边界值分析及真题详解（附历年真题·百度网盘）]]></title><link>https://blog.youkuaiyun.com/derek1997/article/details/169838966</link><guid>https://blog.youkuaiyun.com/derek1997/article/details/169838966</guid><author>derek1997</author><pubDate>Sun, 08 Nov 2026 07:48:37 +0800</pubDate><description><![CDATA[本文系统解析软考中级软件设计师高频考点——黑盒测试中的等价类划分与边界值分析方法。用一张表讲清有效等价类与无效等价类的划分规则、边界值取点（min-1 到 max+1 六个点）以及健壮性测试的扩展，并结合历年真题演示如何由输入条件域推导测试用例数，帮助考生在综合知识选择题中快速锁定正确答案。]]></description><category></category></item></channel></rss>