Article directory
Topic and source of analysis: 2023-05-04 Software designer's daily practice
1. Today's results
2. Summary of wrong questions
first question
Analysis:
Modify Linux file permissions command:chmod。
second question
Parse:
third question
Parse:
fourth question
Parse:
multimode fiberspecialty:low cost, wide core wire, good light concentrating, large dissipation,inefficient, forlow speed, short distancecommunication.
single mode fiberspecialty:high cost, narrow core wire, need laser source, small dissipation,efficient, forhigh speed, long distancecommunication.
3. Gaps in knowledge
- reviewwhite box testingandMcCabe measure。
- reviewfinite automata。
- Suppose a binary tree is represented by a binary linked list (that is, the two pointers of a node indicate the left and right children respectively). When the binary tree contains k nodes, there must bek+1an empty child pointer. ( For this kind of question, you can also directly exemplify the verification options, such as the case where there is only one node and only two nodes ).
- fountainThe development process model is driven by user needs and driven by objects, and is suitable for object-oriented development methods.
- AdapterA pattern is both a class-structural pattern and an object-structural pattern. This mode is compatible withBridgeA similar feature of the pattern is that both provide a certain degree of indirection to another object, and both involve forwarding requests to this object from an interface other than itself.
- In the Publish-Subscribe (Publish-Subscribe) message mode, after a subscriber subscribes to a topic, all subscribers will receive a notification when a new message arrives on the topic.ObserverDesign patterns are best suited for this.