Guangdong 02141 Exam Analysis Guide

Guangdong 02141 Exam Analysis Guide | Generated by AI

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Question: Analyze the National Higher Education Self-study Examination course 02141 Computer Networks, including an analysis of past years’ exam questions in Guangdong.

Answer:

The course 02141 Computer Networks (计算机网络技术) is a national unified examination subject in China’s Higher Education Self-Study Examination (自学考试) system. It is commonly included in computer-related majors (such as computer application technology, computer information management, etc.) at the专科 (specialist/undergraduate) level. In Guangdong province, it follows the national curriculum and uses the same national unified exam papers for most sittings.

Textbook and Syllabus

Main textbook: Computer Networks Technology (计算机网络技术) by Zhang Haixia (张海霞), published by China Machine Press (机械工业出版社), 2016 edition.
This remains the standard textbook as of recent exam cycles (confirmed in Guangdong’s 2026 open course list).
The syllabus covers foundational to intermediate computer networking concepts, aligned with the textbook’s structure (typically 9-10 chapters).

Core Topics (based on typical coverage in 02141 exams):

Introduction to computer networks (history, classification, performance indicators like delay, throughput).
OSI reference model and TCP/IP model (layers, functions, comparison).
Physical layer (transmission media, signals, modulation, multiplexing).
Data link layer (framing, error control, flow control, protocols like HDLC, PPP, MAC sublayer, Ethernet basics).
Network layer (IP addressing, subnetting, routing algorithms, ICMP, ARP).
Transport layer (TCP and UDP, reliable transmission, congestion control, ports).
Application layer (DNS, HTTP, FTP, SMTP, common protocols and services).
Network devices (hubs, switches, routers, VLAN basics).
Network security basics and wireless networks (in some versions).

The exam emphasizes conceptual understanding, protocol principles, and basic calculations (e.g., subnetting, binary conversion for IP).

Exam Format and Question Types

The exam is a closed-book written test, usually 150 minutes, total 100 points. Typical structure (consistent across many national papers, including those used in Guangdong):

Single-choice questions: 20-30 questions, 1-2 points each (often 20 questions × 2 points = 40 points). Covers basic concepts and definitions.
Multiple-choice or fill-in-the-blanks: Sometimes included (10-20 points).
Short-answer / brief explanation questions: 4-6 questions (explain protocols, layers, differences, etc.), 5-10 points each.
Calculation/application questions: Subnet mask calculation, IP address classification, binary-hex conversion, CRC check, etc.
Comprehensive / essay questions: 1-2 larger questions on protocol working process or network design.

The difficulty is moderate, suitable for self-learners. Passing requires ≥60 points.

Analysis of Past Years’ Exam Questions

The exam papers for 02141 are national unified (全国统考), so Guangdong candidates take the same papers as other provinces (no separate Guangdong-specific papers for this course). Past papers from 2002 to recent years (up to 2025/2026 cycles) are available through various self-study platforms.

Key patterns from past papers (2000s–2025):

High-frequency topics (repeated almost every year):
- OSI vs TCP/IP model comparison and layer functions.
- IP address classes, subnetting, CIDR.
- TCP three-way handshake, four-way teardown, reliable transmission mechanisms.
- Ethernet frame structure, CSMA/CD.
- Common protocols: HTTP port 80, DNS, ARP request/reply.
Calculation questions: Subnet division (find network ID, broadcast, usable hosts), often 8-12 points.
Error control: Hamming code or CRC (occasional).
Changes over time: Early papers (2000s) focused more on basics and older technologies; recent papers (2020+) include more on VLAN, wireless basics, and modern TCP/IP applications, but core remains stable.
Stability: Questions often recycle concepts with slight rephrasing. Mastering 5-10 years of papers covers 80-90% of new exam content.
Difficulty trend: Generally stable; choice questions test memory, short answers test understanding, calculations test application.

Guangdong-specific notes:

Guangdong uses the national papers for 02141.
Exam sittings: Usually April and October (sometimes January/July added).
Resources like gdszkw.com, zikaosw.cn, and various Taobao/Bilibili packs provide Guangdong-compatible past papers (up to 2025 April in some collections).
Pass rate is reasonable with systematic review; focus on textbook + past papers.

Preparation Advice:

Prioritize: Chapters on network models, IP/TCP/UDP, data link & network layer.
Practice: Do at least 8-10 full past papers under timed conditions.
Common pitfalls: Confusing OSI layers vs TCP/IP, miscalculating subnets, forgetting protocol port numbers.

This course tests fundamental networking knowledge that remains relevant.

References:

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