Nội dung text CCNA-full-200-301.pdf
Vendor: Cisco Exam Code: 200-301 Exam Name: CCNA - Cisco Certified Network Associate Version: 22.111 (1083 Questions, 8 Labs) Updated on: Feb. 21, 2024 Total: 1296 questions (16 Labs)
Updated by Luc Thien Phong. All right reverse! Contact: https://www.facebook.com/ltp1120 Synthesized by: PassLeader, ExamTopics, ITExamAnswers 2 QUESTION 1 Which statement correctly compares traditional networks and controller-based networks? A. Only traditional networks offer a centralized control plane B. Only traditional networks natively support centralized management C. Traditional and controller-based networks abstract policies from device configurations D. Only controller-based networks decouple the control plane and the data plane Answer: D Explanation: Most traditional devices use a distributed architecture, in which each control plane is resided in a networking device. Therefore they need to communicate with each other via messages to work correctly. In contrast to distributed architecture, centralized (or controller-based) architectures centralizes the control of networking devices into one device, called SDN controller -> Answer D is correct. QUESTION 2 How does HSRP provide first hop redundancy? A. It load-balances traffic by assigning the same metric value to more than one route to the same destination in the IP routing table. B. It load-balances Layer 2 traffic along the path by flooding traffic out all interfaces configured with the same VLAN. C. It forwards multiple packets to the same destination over different routed links in the data path D. It uses a shared virtual MAC and a virtual IP address to a group of routers that serve as the default gateway for hosts on a LAN Answer: D Explanation: This virtual IP address is in the same subnet as the interface IP address, but it is a different IP address. The router then automatically creates the virtual MAC address. All the cooperating HSRP routers know these virtual addresses, but only the HSRP active router uses these addresses at any one point in time. The virtual router is responsible for host communications such as an ARP request for the host’s default gateway. Technically, this is served by the active router since it is hosting the virtual router. However, it is the virtual router’s IP address and MAC address that are used for outgoing packets. QUESTION 3 Which two actions influence the EIGRP route selection process? (Choose two) A. The router calculates the reported distance by multiplying the delay on the exiting Interface by 256. B. The router calculates the best backup path to the destination route and assigns it as the feasible successor. C. The router calculates the feasible distance of all paths to the destination route D. The advertised distance is calculated by a downstream neighbor to inform the local router of the bandwidth on the link E. The router must use the advertised distance as the metric for any given route Answer: BC Explanation:
Updated by Luc Thien Phong. All right reverse! Contact: https://www.facebook.com/ltp1120 Synthesized by: PassLeader, ExamTopics, ITExamAnswers 3 The reported distance (or advertised distance) is the cost from the neighbor to the destination. It is calculated from the router advertising the route to the network. For example in the topology below, suppose router A & B are exchanging their routing tables for the first time. Router B says "Hey, the best metric (cost) from me to IOWA is 50 and the metric from you to IOWA is 90" and advertises it to router A. Router A considers the first metric (50) as the Advertised distance. The second metric (90), which is from NEVADA to IOWA (through IDAHO), is called the Feasible distance. The reported distance is calculated in the same way of calculating the metric. By default (K1 = 1, K2 = 0, K3 = 1, K4 = 0, K5 = 0), the metric is calculated as follows: -> Answer A is not correct. Feasible successor is the backup route. To be a feasible successor, the route must have an Advertised distance (AD) less than the Feasible distance (FD) of the current successor route -> Answer B is correct. Feasible distance (FD): The sum of the AD plus the cost between the local router and the next- hop router. The router must calculate the FD of all paths to choose the best path to put into the routing table. Note: Although the new CCNA exam does not have EIGRP topic but you should learn the basic knowledge of this routing protocol. QUESTION 4 Which two capabilities of Cisco DNA Center make it more extensible as compared to traditional campus device management? (Choose two.) A. adapters that support all families of Cisco IOS software B. SDKs that support interaction with third-party network equipment C. customized versions for small, medium, and large enterprises D. REST APIs that allow for external applications to interact natively with Cisco DNA Center E. modular design that is upgradable as needed Answer: BD Explanation: Cisco DNA Center offers 360-degree extensibility through four distinct types of platform capabilities:
Updated by Luc Thien Phong. All right reverse! Contact: https://www.facebook.com/ltp1120 Synthesized by: PassLeader, ExamTopics, ITExamAnswers 4 + Intent-based APIs leverage the controller and enable business and IT applications to deliver intent to the network and to reap network analytics and insights for IT and business innovation. + Process adapters, built on integration APIs, allow integration with other IT and network systems to streamline IT operations and processes. + Domain adapters, built on integration APIs, allow integration with other infrastructure domains such as data center, WAN, and security to deliver a consistent intent-based infrastructure across the entire IT environment. + SDKs allow management to be extended to third-party vendor's network devices to offer support for diverse environments. Reference: https://www.cisco.com/c/en/us/products/collateral/cloud-systems-management/dna- center/nb- 06-dna-cent-platf-aag-cte-en.html QUESTION 5 Refer to the exhibit. What does router R1 use as its OSPF router-ID? A. 10.10.1.10 B. 10.10.10.20 C. 172.16.15.10 D. 192.168.0.1 Answer: C Explanation: OSPF uses the following criteria to select the router ID: 1. Manual configuration of the router ID (via the "router-id x.x.x.x" command under OSPF router configuration mode). 2. Highest IP address on a loopback interface. 3. Highest IP address on a non-loopback and active (no shutdown) interface. QUESTION 6 Which 802.11 frame type is association response? A. management B. protected frame C. control D. action Answer: A Explanation: There are three main types of 802.11 frames: the Data Frame, the Management Frame and the Control Frame. Association Response belongs to Management Frame. Association response is sent in response to an association request. QUESTION 7