Cisco CCNA 200-301 Questions & Answers

• Question 781:

  What is a characteristic of an SSID in wireless networks?

  A. eliminates network piggybacking

  B. prompts a user for a login ID

  C. broadcasts a beacon signal to announce its presence by default

  D. must include a combination of letters and numbers

  Correct Answer: C

  SSID broadcast a beacon message periodically and stations listen for these messages from the AP, and it's called passive scanning, active scanning probe request and probe response

• Question 782:

  What are the two functions of SSIDs? (Choose two.)

  A. uses the maximum of 32 alphanumeric characters

  B. controls the speed of the Wi-Fi network

  C. used exclusively with controller-based Wi-Fi networks

  D. supports a single access point

  E. broadcasts by default

  Correct Answer: AE

  An SSID can be supported by MULTIPLE access points

• Question 783:

  Refer to the exhibit.

  

  Configurations for the switch and PCs are complete. Which configuration must be applied so that VLANs 2 and 3 communicate back and forth?

  A. interface GigabitEthernet0/0 ip address 10.10.2.10 255.255.252.0

  B. interface GigabitEthernet0/0.10 encapsulation dot1Q 3 ip address 10.10.2.10 255.255.254.0

  C. interface GigabitEthernet0/0.3 encapsulation dot1Q 3 native ip address 10.10.2.10 255.255.252.0

  D. interface GigabitEthernet0/0.3 encapsulation dot1Q 10 ip address 10.10.2.10 255.255.255.252

  Correct Answer: B

  R1 Subinterface Configuration (4.2.4)

  The router-on-a-stick method requires you to create a subinterface for each VLAN to be routed.

  A subinterface is created using the interface interface_id.subinterface_id global configuration mode command. The subinterface syntax is the physical interface followed by a period and a subinterface number. Although not required, it is

  customary to match the subinterface number with the VLAN number.

  https://www.ciscopress.com/articles/article.asp?p=3089357andseqNum=5

• Question 784:

  Why is UDP more suitable than TCP for applications that require low latency such as VoIP?

  A. UDP reliably guarantees delivery of all packets: TCP drops packets under heavy load

  B. UDP uses sequencing data for packets to arrive in order TCP offers the capability to receive packets in random order

  C. TCP uses congestion control for efficient packet delivery: UDP uses flow control mechanisms for the delivery of packets

  D. TCP sends an acknowledgement for every packet received: UDP operates without acknowledgments

  Correct Answer: D

  1.

  The PDU of "Transport" Layer is called as a "Segment".

  2.

  The PDU of "Network" Layer is called as a "Packet".

  3.

  The PDU of the "Data-Link" Layer is called "Frames".

  More information on source: https://www.geeksforgeeks.org/difference-between-segments-packets-and-frames/

• Question 785:

  What is a characteristic of private IPv4 addressing?

  A. traverses the internet when an outbound ACL is applied

  B. alleviates the shortage of IPv4 addresses

  C. is used when the ISP requires the new subnet to be advertised to the internet for web services

  D. enables secure connectivity over the internet

  Correct Answer: B

• Question 786:

  Which type of API allows SDN controllers to dynamically make changes to the network?

  A. northbound API

  B. REST API

  C. SOAP API

  D. southbound API

  Correct Answer: D

  Cisco overview doc for SDN here: https://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/Data_Center/VMDC/SDN/SDN.html

• Question 787:

  Refer to the exhibit.

  

  Which IPv6 configuration is required for R17 to successfully ping the WAN interface on R18?

  

  A. Option A

  B. Option B

  C. Option C

  D. Option D

  Correct Answer: B

  ipv6 unicast-routing statement included (IPv6 is enabled on the router). Compared to the exhibit, Fa0/0 and Fa0/1 have correct configurations. The route to subnet 2001:db8:4::/64 points to R18's Fa1/0 (correct next-hop).

• Question 788:

  Refer to the exhibit.

  

  Between which zones do wireless users expect to experience intermittent connectivity?

  A. between zones 1 and 2

  B. between zones 2 and 5

  C. between zones 3 and 4

  D. between zones 3 and 6

  Correct Answer: C

  Zones 3 and 4 both have Channel 11 that is overlapped. Zones 3 and 6 do not overlap at all.

• Question 789:

  Which device permits or denies network traffic based on a set of rules?

  A. access point

  B. firewall

  C. wireless controller

  D. switch

  Correct Answer: B

• Question 790:

  Refer to the exhibit.

  

  The entire MAC address table for SW1 is shown here:

  

  What does SW1 do when Br-4 sends a frame to Br-2?

  A. It inserts the source MAC address and port into the forwarding table and forwards the frame to Br-2.

  B. It maps the Layer 2 MAC address for FaO/3 to the Layer 3 IP address and forwards the frame.

  C. It performs a lookup in the MAC address table for Br-4 and discards the frame due to a missing entry.

  D. It floods the frame out of all ports except on the port where Br-2 is connected.

  Correct Answer: A