Certificación CNNA

Which two statements about the purpose of the OSI model are accurate?

• Defines the network functions that occur at each layer

• Facilitates an understanding of how information travels throughout a network

• Changes in one layer do not impact other layer

• Ensures reliable data delivery through its layered approach

What are two functions of a server on a network?

• runs applications that send and retrieve data for workstations that make requests

• chieves redundancy by exclusively using virtual server clustering

• handles requests from multiple workstations at the same time

• housed solely in a data center that is dedicated to a single client

• runs the same operating system in order to communicate with other servers

What is the primary function of a Layer 3 device?

• to analyze traffic and drop unauthorized traffic from the Internet

• to transmit wireless traffic between hosts

• orward traffic within the same broadcast domain

• to pass traffic between different networks

Which WAN topology provides a combination of simplicity quality, and availability?

• partial mesh

• full mesh

• point-to-point

• hub-and-spoke

A company needs to interconnect several branch offices across a metropolitan area. The network engineer is seeking a solution that provides high-speed converged traffic, including voice, video, and data on the same network infrastructure. The company also wants easy integration to their existing LAN infrastructure in their office locations. Which technology should be recommended?

• VSAT

• ISDN

• Frame Relay

• Ethernet WAN

Which two WAN architecture options help a business scalability and reliability for the network?

• dynamic routing

• static routing

• dual-homed branches

• single-homed branches

• asychronous routing

What are two improvements provided by automation for network management in an SDN environment?

• Artificial intelligence identifies and prevents potential design failures

• Data collection and analysis tools establish a baseline for the network

• New devices are onboarded with minimal effort

• Machine learning minimizes the overall error rate when automating troubleshooting processes

• Proprietary Cisco APIs leverage multiple network management tools

A network administrator must to configure SSH for remote access to router R1. The requirement is to use a public and private key pair to encrypt management traffic to and from the connecting client. Which configuration, when applied, meets the requirements?

• R1#enable

  R1#configure terminal

  R1(config)#ip domain-name cisco.com

  R1(config)#crypto key generate ec keysize 1024

• R1#enable

  R1#configure terminal

  R1(config)#ip domain-name cisco.com

  R1(config)#crypto key generate rsa modulus 1024

• R1#enable

  R1#configure terminal

  R1(config)#ip domain-name cisco.com

  R1(config)#crypto key generate ec keysize 2048

• R1#enable

  R1#configure terminal

  R1(config)#ip domain-name cisco.com

  R1(config)#crypto key encrypt rsa name myKey

An engineer observes high usage on the 2.4GHz channels and lower usage on the 5GHz channels. What must be configured to allow clients to preferentially use 5GHz access points?

• Client Band Select

• Client Band Select

• 11ac MU-MIMO

• Re-Anchor Roamed Clients

When a WLAN with WPA2 PSK is configured in the Wireless LAN Controller GUI which format is supported?

• Unicode

• base64

• ASCII

• decimal