exam questions

Exam 200-301 All Questions

View all questions & answers for the 200-301 exam

Exam 200-301 topic 1 question 259 discussion

Actual exam question from Cisco's 200-301
Question #: 259
Topic #: 1
[All 200-301 Questions]

Why does a switch flood a frame to all ports?

  • A. The frame has zero destination MAC addresses.
  • B. The destination MAC address of the frame is unknown.
  • C. The source MAC address of the frame is unknown
  • D. The source and destination MAC addresses of the frame are the same.
Show Suggested Answer Hide Answer
Suggested Answer: B 🗳️

Comments

Chosen Answer:
This is a voting comment (?). It is better to Upvote an existing comment if you don't have anything to add.
Switch to a voting comment New
Fuaad
Highly Voted 3 years, 10 months ago
B is the correct answer please update it
upvoted 38 times
...
zipperump_a_zoo
Most Recent 1 year, 3 months ago
Selected Answer: B
Poorly worded question. What types of traffic will a switch flood out all ports? Broadcast and multicast frames, as well as unicast frames to unknown destinations, are normally flooded to all ports in a basic switch, and all of this traffic will circulate in such a loop. Flooding means that the switch sends the incoming frame to all occupied and active ports (except for the one from which it was received). In essence, flooding is when a switch pretends to be a hub. since there is no option to select a broadcast or multicast it can only be assumes that Cisco is referring to option b as no other option can create a "flooding"
upvoted 2 times
...
Da_Costa
1 year, 11 months ago
Selected Answer: B
The destination is unknown
upvoted 2 times
...
mfaria
1 year, 11 months ago
Selected Answer: B
Switch flooding is done to fill the CAM table and find out if the destination MAC is available. It is sent to all ports except the source one.
upvoted 1 times
...
HSong
2 years, 2 months ago
D is the answer, if the destination MAC is unknown, the frame will be sent to all the port except the original one, but not ALL THE PORTS.
upvoted 2 times
...
jaypzz
2 years, 7 months ago
Selected Answer: B
B is correct
upvoted 1 times
...
R_AZZ23
2 years, 11 months ago
B is the correct answer .
upvoted 2 times
...
ZUMY
3 years ago
Selected Answer: B
B is correct
upvoted 2 times
...
Shirona
3 years ago
B is Correct.
upvoted 1 times
...
sakisg
3 years, 1 month ago
Selected Answer: B
b is correct
upvoted 1 times
...
Djow
3 years, 1 month ago
Selected Answer: D
D is the correct answer. if the source MAC is know, the sw will send trafic to all ports, except the source port...
upvoted 2 times
jojolabubu
7 months ago
The frame includes the MAC of the source so if unknown the table is updated. Poorly worded, even incorrect somehow but answer must be B.
upvoted 1 times
...
...
Weezyfbaby
3 years, 1 month ago
Selected Answer: B
Because CCNA
upvoted 3 times
...
abual3ees
3 years, 1 month ago
Selected Answer: B
b correct
upvoted 1 times
...
Sajowww
3 years, 1 month ago
Selected Answer: B
Source MAC is known, only destination MAC is unknown
upvoted 1 times
battery1979
3 years ago
Question asked what happens if both source and destination are unknown, but no clue how a switch ends up with a frame with an unknown source.
upvoted 1 times
...
...
dfvanloon
3 years, 1 month ago
B is the correct answer can you update the answer.
upvoted 2 times
...
ScorpionNet
3 years, 2 months ago
B is correct because it happens during an ARP request for IPv4 and ICMPv6 ND for IPv6 because the Switch doesn't know what network had the MAC Address assigned yet
upvoted 2 times
...
msomali
3 years, 2 months ago
The correct answer is B. Switches tend to flood frame with the Unknown Destination MAC Address out all ports apart from the Originating (apart from the one it received) port.
upvoted 2 times
...
Community vote distribution
A (35%)
C (25%)
B (20%)
Other
Most Voted
A voting comment increases the vote count for the chosen answer by one.

Upvoting a comment with a selected answer will also increase the vote count towards that answer by one. So if you see a comment that you already agree with, you can upvote it instead of posting a new comment.

SaveCancel
Loading ...