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Exam 350-401 topic 1 question 1026 discussion

Actual exam question from Cisco's 350-401
Question #: 1026
Topic #: 1
[All 350-401 Questions]

What is the architectural difference between the MAC address table and TCAM?

  • A. TCAM entries are stored for 600 seconds, and MAC address table entries are kept for 200 seconds.
  • B. TCAM entries are populated using the ARP table, and the MAC address table is populated dynamically from outgoing frames.
  • C. TCAM entries consist of VLAN, port ID and source MAC Address, and MAC address table entries consist of source MAC address end port ID.
  • D. TCAM entries are composed of value, mask, and result, and MAC address table entries are composed of value and results.
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Suggested Answer: D 🗳️

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pacman64
2 weeks, 4 days ago
Selected Answer: D
The correct answer is D: TCAM entries are composed of value, mask, and result, and MAC address table entries are composed of value and results. Here's why: TCAM (Ternary Content Addressable Memory): - Uses a three-component structure: 1. Value: The data to match 2. Mask: Determines which bits to compare 3. Result: The action to take when matched - Allows for wildcard matching - Optimized for fast lookups in networking devices MAC Address Table: - Uses a simpler two-component structure: 1. Value: MAC address 2. Result: Port number/interface - Direct one-to-one mapping - No masking capability needed Why other options are incorrect: A) The timing values are incorrect, and timing isn't an architectural difference B) This describes population methods, not architectural differences C) This incorrectly describes the components of both structures
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Telcoeric
3 months, 3 weeks ago
A: No. this is exactly backwards. B: No. EIGRP is considered a hybrid routing protocol. C: No. EIGRP uses DUAL, OSPF uses SPF. D: Yes. But poorly worded. External EIGRP has an AD of 170. Internal EIGRP has an AD of 90.
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chiacche
3 months, 3 weeks ago
Example: TCAM: deny ip 192.168.1.0 0.0.0.255 any MAC: MAC Address Port 00:1A:2B:3C:4D:5E Gi0/1
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