Real Exam Questions 02141 Sample | Generated by AI

Home 2026.06

Question: Show me real exam questions from recent 02141 papers (applicable to the Guangdong April 2026 sitting).

Answer:

I pulled the April 2025 national paper (the most recent published set — papers with the same course code are usable across provinces). Below is a representative sample, translated to English with the correct answer and a one-line reason for each, so it doubles as drill material. The full original Chinese paper with answer links is at the source.

Section 1 — Single choice (单选, 1 pt each)

These are real questions from the 2025-04 paper, paraphrased into English:

  1. In asynchronous transmission, the unit of data sent is: byte / character / word / field → Character (字符). Async framing wraps each character with start/stop bits — this is the textbook ch.2 definition.
  2. RS-232 is a typical protocol of which layer? → Physical layer. It specifies voltages, pins, connectors — mechanical/electrical characteristics = physical layer.
  3. Which option lists only internet-layer (网络互连层) protocols? → IP, ICMP, IGMP together (the distractors smuggle in UDP/TCP/FTP, which are transport/application layer). Train yourself to layer-classify every protocol acronym instantly.
  4. In the LAN reference model, everything related to attaching to different transmission media lives in: → the MAC sublayer. LLC is media-independent; MAC is media-dependent. Classic 802 model question.
  5. The topology of traditional (classic coax) Ethernet is: → Bus (总线型). “Traditional” is the trap word — modern switched Ethernet is star, but the textbook’s 传统以太网 means 10BASE-2/5.
  6. The VLAN standard is: → IEEE 802.1Q. Distractors are 802.1D (STP), 802.1p (priority), 802.1s (MSTP). Pure memorization.
  7. CSMA/CD in traditional Ethernet aims to avoid: → Collisions (冲突). The CD literally stands for collision detection.
  8. A routing table’s basic structure contains destination network, next hop, interface, and: → Subnet mask. Needed to do the longest-prefix match.
  9. With symmetric encryption among n users where each pair shares a key, total keys needed: → n(n−1)/2. It’s just C(n,2) — and the follow-up they love: public-key crypto reduces this to 2n keys (n key pairs).
  10. Common Internet security protocols are: → IPsec, SSL, TLS (distractor sets mix in IGMP/ICMP/TTL, which aren’t security protocols at all).

Section 2 — Fill in the blank (填空, 1 pt each)

Real 2025-04 items, translated. You must produce the exact Chinese term:

  1. The metric for the amount of data passing through a network per unit time → 吞吐量 (throughput).
  2. Adjacent layers in a layered architecture exchange data through → 接口/服务访问点 (interface / SAP).
  3. The application-layer protocol of the WWW service → HTTP.
  4. The connectionless transport-layer protocol in TCP/IP → UDP.
  5. A transport-layer port number is a binary integer of → 16 bits.

Sections 3–4 — Short answer & application (from adjacent years’ papers)

The back half of papers recycles heavily. Verified recurring examples:

What this tells you about the 23

Look at the pattern: every single-choice answer above is a one-hop fact lookup, and the fill-ins demand exact Chinese terminology. There’s no systems reasoning anywhere — your production networking knowledge literally cannot express itself in this format unless you’ve loaded the textbook’s vocabulary table into memory. The fix is mechanical: scrape the 真题 pages above into a JSONL of (question, answer, chapter) and drill with a tiny CLI quizzer until single-choice + fill-in (~35 pts) is near-perfect, then bank the two application archetypes (~20 pts) — that alone clears 60 before you write a single 简答.

Want me to write that scraper + spaced-repetition drill script (Python, runs on your Air, feeds from these zikaosw pages)?

References:

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