Cisco CCNA 200-301 Questions & Answers

• Question 851:

  What does physical access control regulate?

  A. access to spec fie networks based on business function

  B. access to servers to prevent malicious activity

  C. access :o computer networks and file systems

  D. access to networking equipment and facilities

  Correct Answer: D

• Question 852:

  What are network endpoints?

  A. act as routers to connect a user to the service prowler network

  B. a threat to the network if they are compromised

  C. support inter-VLAN connectivity

  D. enforce policies for campus-wide traffic going to the internet

  Correct Answer: B

  https://www.paloaltonetworks.com/cyberpedia/what-is-an-endpoint

• Question 853:

  How does QoS optimize voice traffic?

  A. reducing bandwidth usage

  B. by reducing packet loss

  C. by differentiating voice and video traffic

  D. by increasing jitter

  Correct Answer: B

  Key guidelines are Delay one way: 150ms or less Jitter: 30ms or less Loss: 1% or less

• Question 854:

  On workstations running Microsoft Windows, which protocol provides the default gateway for the device?

  A. DHCP

  B. STP

  C. SNMP

  D. DNS

  Correct Answer: A

• Question 855:

  What is the purpose of using First Hop Redundancy Protocol in a specific subnet?

  A. Filter traffic based on destination IP addressing

  B. Sends the default route to the hosts on a network

  C. ensures a loop-free physical topology

  D. forwards multicast hello messages between routers

  Correct Answer: D

  FHRP is layer 3 protocol whose purpose is to protect the default gateway by offering redundancy of the gateway in a subnet. This is achieved by allowing two or more routers to provide a backup for the first-hop IP router address. If a failure of an active router occurs, the backup router will take over the address. The routers negotiate their roles (Active/Standby) with each other by multicast hello messages to share the VIP (virtual IP address) between the FHRP routers. The terms Active/Standby vary between the different types of FHRP. The active router will act as the default gateway and the standby router acts as a backup the active router.

• Question 856:

  What is the difference in data transmission delivery and reliability between TCP and UDP?

  A. TCP transmits data at a higher rate and ensures packet delivery. UDP retransmits lost data to ensure applications receive the data on the remote end.

  B. UDP sets up a connection between both devices before transmitting data. TCP uses the three-way handshake to transmit data with a reliable connection.

  C. UDP is used for multicast and broadcast communication. TCP is used for unicast communication and transmits data at a higher rate with error checking.

  D. TCP requires the connection to be established before transmitting data. UDP transmits data at a higher rate without ensuring packet delivery.

  Correct Answer: D

  UDP speeds up transmissions by enabling the transfer of data before an agreement is provided by the receiving party. As a result, UDP is beneficial in time- sensitive communications, including voice over IP (VoIP), domain name system (DNS) lookup, and video or audio playback.

• Question 857:

  Refer to me exhibit. Which action is taken by the router when a packet is sourced from 10.10.10.2 and destined for 10.10.10.16?

  

  A. It uses a route that is similar to the destination address

  B. It discards the packets.

  C. It floods packets to all learned next hops.

  D. It Queues the packets waiting for the route to be learned.

  Correct Answer: B

  Referring to routing table, 10.10.10.0/28 supports network from 10.10.10.0-10.10.10.15.

  Gateway of last resort is not set

  So traffic destined to 10.10.10.16 will be discarded.

• Question 858:

  Refer to the exhibit. R5 is the current DR on the network, and R4 is the BDR. Their interfaces are flapping, so a network engineer wants the OSPF network to elect a different DR and BDR. Which set of configurations must the engineer implement?

  

  A. R4(config)#interface gi0/0 R4(config-if)#ip ospf priority 20 R5(config)#interface gi0/0 R5(config-if)#ip ospf priority 10

  B. R5(config)#interface gi0/0 R5(config-if)#ip ospf priority 120 R4(config)#interface gi0/0 R4(config-if)#ip ospf priority 110

  C. R3(config)#interface gi0/0 R3(config-if)#ip ospf priority 255 R2(config)#interface gi0/0 R2(config-if)#ip ospf priority 240

  D. R2(config)#interface gi0/0 R2(config-if)#ip ospf priority 259 R3(config)#interface gi0/0 R3(config-if)#ip ospf priority 256

  Correct Answer: C

  highest metrik is DR. max 255

• Question 859:

  Refer to the exhibit.

  

  Which two commands, when configured on router R1, fulfill these requirements? (Choose two.)

  1.

  Packets towards the entire network 2001:db8:2::/64 must be forwarded through router R2.

  2.

  Packets toward host 2001:db8:23::14 preferably must be forwarded through R3.

  A. ipv6 route 2001:db8:23::/128 fd00:12::2

  B. ipv6 route 2001:db8:23::14/128 fd00:13::3

  C. ipv6 route 2001:db8:23::14/64 fd00:12::2

  D. ipv6 route 2001:db8:23::/64 fd00:12::2

  E. ipv6 route 2001:db8:23::14/64 fd00:12::2 200

  Correct Answer: BD

• Question 860:

  An engineer configures interface Gi1/0 on the company PE router to connect to an ISP Neighbor discovery is disabled. Which action is necessary to complete the configuration if the ISP uses third-party network devices?

  

  A. Enable LLDP globally

  B. Disable autonegotiation

  C. Disable Cisco Discovery Protocol on the interface

  D. Enable LLDP-MED on the ISP device

  Correct Answer: A

  LDDP-MED is used only between network devices (such as switches) and endpoint devices (such as phones). For network-to-network connections, LLDP is used.

  Check table 2, protocol uses:

  https://www.cisco.com/en/US/technologies/tk652/tk701/technologies_white_paper0900aecd804cd46d.html