ExamTopics Logo
Mail Us[email protected]
Menu
Cisco Discussions
exam questions

Exam 300-820 All Questions

View all questions & answers for the 300-820 exam
Go to Exam

Exam 300-820 topic 1 question 7 discussion

Actual exam question from Cisco's 300-820
Question #: 7
Topic #: 1
[All 300-820 Questions]

What are two reasons why port 8443 is unreachable from the Internet to the Expressway-E? (Choose two.)

  • A. The MRA license is missing on the Expressway-E.
  • B. The Unified Communications zone is down.
  • C. Transform is not configured on Expressway-E.
  • D. The SRV record for _cisco-uds is misconfigured.
  • E. The firewall is blocking the port.
Show Suggested Answer Hide Answer
Suggested Answer: BE 🗳️
by BangBang86 at Aug. 13, 2020, 6:30 a.m.

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
Submit Cancel
somedudebob
Highly Voted 3 years ago
Traffic is coming from the internet so can not be the cisco_uds record, as it is created on the internal DNS only. Collab_edge is the external DNS record. It has to be port blocked or traversal zone down
upvoted 6 times
...
BangBang86
Highly Voted 3 years, 3 months ago
Either port blocked, or the UC traversal zone is down.
upvoted 6 times
...
Collabinski
Most Recent 10 months ago
Selected Answer: DE
D & E are correct. The links in the comments do not refer to UC Zone at all.
upvoted 1 times
...
cyberknock
10 months, 4 weeks ago
Selected Answer: DE
there is no unified communications zone, it is for sure DE, the _cisco-uds record must be present
upvoted 1 times
...
preki10
11 months, 3 weeks ago
Selected Answer: DE
There is no "Unified Communications zone", B can't be right....cannot assume it refers to "Unified Communications traversal zone"
upvoted 1 times
...
TestingAAgain
1 year, 5 months ago
Selected Answer: DE
Traffic coming through an MRA pair (C&E) DOES use the _cisco-uds record to get from the C to CUCM. B is wrong because there is no unified Communications Zone (there is a UC Traversal zone, close, but different) in the expressway. Since the 8443 traffic is actually destined for CUCM, if the _cisco-uds record is botched, it won't get there...and thus it will be unreachable.
upvoted 3 times
...
msully
1 year, 5 months ago
Selected Answer: BE
B and E. Collab-edge is used for MRA, not UDS.
upvoted 4 times
...
chacthor
1 year, 9 months ago
Selected Answer: BE
Should be BE
upvoted 3 times
...
rlcabrini
2 years, 10 months ago
https://www.cisco.com/c/en/us/support/docs/unified-communications/expressway/118798-technote-cucm-00.html#anc6 Topic 1 B - The Unified Communications zone is down. E - Firewall is blocking.
upvoted 4 times
Collabinski
10 months, 2 weeks ago
Nothing in this link specifies anything about a "UC Zone". It does mention both the _cisco-uds SRV and firewalls blocking ports,
upvoted 1 times
...
...
khader09
3 years, 1 month ago
D and E are correct
upvoted 1 times
msully
1 year, 9 months ago
Not D, cisco-uds is an internal srv, collab-edge is the external (internet facing) srv record
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