Which standard access control entry permits from odd-numbered hosts in the 10.0.0.0/24 subnet?

• A.Permit 10.0.0.0.0.0.0.1
• B.Permit 10.0.0.1.0.0.0.0
• C.Permit 10.0.0.1.0.0.0.254
• D.Permit 10.0.0.0.255.255.255.254

Correct Answer: C

Explanation
Remember, for the wildcard mask, 1s are I DON'T CARE, and 0s are I CARE. So now let's analyze a simple ACL:
access-list 1 permit 172.23.16.0 0.0.15.255
Two first octets are all 0's meaning that we care about the network 172.23.x.x. The third octet of the wildcard mask, 15 (0000 1111 in binary), means that we care about first 4 bits but don't care about last 4 bits so we allow the third octet in the form of 0001xxxx (minimum:00010000 = 16; maximum: 0001111 = 31).

The fourth octet is 255 (all 1 bits) that means I don't care.
Therefore network 172.23.16.0 0.0.15.255 ranges from 172.23.16.0 to 172.23.31.255.
Now let's consider the wildcard mask of 0.0.0.254 (four octet: 254 = 1111 1110) which means we only care the last bit. Therefore if the last bit of the IP address is a "1" (0000 0001) then only odd numbers are allowed. If the last bit of the IP address is a "0" (0000 0000) then only even numbers are allowed.
Note: In binary, odd numbers are always end with a "1" while even numbers are always end with a "0".
Therefore in this question, only the statement "permit 10.0.0.1 0.0.0.254" will allow all oddnumbered hosts in the 10.0.0.0/24 subnet.

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Refer to the exhibit.

Refer to the exhibit. Which configuration set implements Control plane Policing for SSH and Telnet?

• A.Option C
• B.Option D
• C.Option A
• D.Option B

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Refer to the exhibit.

Which command must be applied to Routed to bring the GRE tunnel to an up/up state?

• A.Router1(config)#interface tunnel0
• B.Router1(config-if)#tunnel source GigabitEthernet0/1
• C.Router1(config-if)#tunnel mode gre multipoint
• D.Router1(config-if)#tunnel source Loopback0

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Which function does a fabric edge node perform in an SD-Access deployment?

• A.Connects the SD-Access fabric to another fabric or external Layer 3 networks
• B.Connects endpoints to the fabric and forwards their traffic
• C.Provides reachability border nodes in the fabric underlay
• D.Encapsulates end-user data traffic into LISP.

Correct Answer: B

Explanation
There are five basic device roles in the fabric overlay:
+ Control plane node: This node contains the settings, protocols, and mapping tables to provide the endpoint-to-location (EID-to-RLOC) mapping system for the fabric overlay.
+ Fabric border node: This fabric device (for example, core layer device) connects external Layer
3 networks to the SDA fabric.
+ Fabric edge node: This fabric device (for example, access or distribution layer device) connects wired endpoints to the SDA fabric.
+ Fabric WLAN controller (WLC): This fabric device connects APs and wireless endpoints to the SDA fabric.
+ Intermediate nodes: These are intermediate routers or extended switches that do not provide any sort of SD-Access fabric role other than underlay services.

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A customer has recently implemented a new wireless infrastructure using WLC-5520S at a site directly next to a large commercial airport Users report that they intermittently lose Wi-Fi connectivity, and troubleshooting reveals it is due to frequent channel changes Which two actions fix this issue? (Choose two)

• A.Remove UNII-2 and Extended UNII-2 channels from the 5 Ghz channel list
• B.Configure channels on the UNII-2 and the Extended UNII-2 sub-bands of the 5 Ghz band only
• C.Enable DFS channels because they are immune to radar interference
• D.Disable DFS channels to prevent interference writ) Doppler radar
• E.Restore the OCA default settings because this automatically avoids channel interference

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