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CCNA Questions with well solved solutions
Which standard natively includes portfast, uplink fast and backbonefast - ANSWER>>802.1w
Can leaf nodes in spine-leaf connect to other leaf nodes - ANSWER>>No An LACP channel group on SwitchA is configured to operate in active mode. Which mode could you configure the corresponding channel group on SwitchB to create a valid EtherChannel config? - ANSWER>>Active and Passive What priority value does a Cisco IP phone assign to traffic revieved from a host on its access port by default? - ANSWER>> What is VLAN hopping? - ANSWER>>An attacker send double-tagged 802.1Q frames over a trunk link What is MAC flooding? - ANSWER>>An attacker send traffic out every port on a switch What is ARP poisoning - ANSWER>>An attacker intercepts traffic intended for another recipient What is MAC spoofing? - ANSWER>>An attacker identifies itself using the address of another host What is DHCP Spoofing? - ANSWER>>An attacker installs a rogue server on the network What is JSON object syntax - ANSWER>>{} What is JSON text syntax - ANSWER>>"" You have issued the power incline police command on a switch, what will occur when an attached PD attempts to draw more than its allocated amount of power?
- ANSWER>>The port will enter an error-disabled state, and a log message will appear on the console What is used to calculate EIGRP metric? - ANSWER>>Sum of segment delays and the lowest segment bandwidth T/F FastEthernet, GigEthernet, and TenGigEthernet will all have the same OSPF cost - ANSWER>>True What is authorization? - ANSWER>>The process of verifying the level of access configured for a user You want to view the IP address of the neighboring device, the interface the switch is connected to on the neighboring device, and the interface the neighboring device is connected to on the switch. What command should you use? - ANSWER>>Show cdp neighbors detail Which cisco lightweight AP mode sends captured traffic to an analyzer? - ANSWER>>Sniffer mode What CISCO AP mode enables a failsafe for the AP if its connection to the WLC by way of CAPWAP tunnel goes down? - ANSWER>>FlexConnect mode What AP mode acts as a dedicated connection between two networks? - ANSWER>>Bridge mode Which command correctly configured a domain name for the pool - ANSWER>>RouterA(dhcp-config)#domain-name example.com Your company has been assigned the 2021:0:0:99::/64 IPv6 prefix and your host PC has a MAC of 00-33-66-99-BB-EE. What IPv6 address is used? - ANSWER>>2021::99:0233:66FF:FE99:BBEE Which Cisco SDA components creates VXLAN tunnels between SDA switches - ANSWER>>The overlay network
What is a 3 level syslog - ANSWER>>Error What is a 4 level syslog - ANSWER>>Warning What is a 5 level syslog - ANSWER>>Notice What is a 6 level syslog - ANSWER>>Informational What is a 7 level syslog - ANSWER>>Debug What address blocks are defined by the RFC 1918 - ANSWER>>172.16.0.0/12 and 192.168.0.0/ RouterA is configured as a DHCP server and you want to configure RouterB as a DHCP relay agent, what command should you do to achieve this on RouterB - ANSWER>>ip-helper address "ip-address of routerA" RouterA takes several routes to the same IP address, which route will be installed on the routing table - ANSWER>>The route with the lowest AD Which of the following does RED and WRED address - ANSWER>>tail drop What is a cisco propietary protocol FHRP that elects an AVG - ANSWER>>GLBP What is found in an EIGRP routing table - ANSWER>>successors What cisco management solution is typically installed on a desktop workstation? - ANSWER>>Cisco Network Assistant What is a cisco proprietary API - ANSWER>>OnePK What uses an imperative SDN model - ANSWER>>OpenFlow What uses a declarative SDN model - ANSWER>>OpFlex What uses XML and RPCs to configure network devices - ANSWER>>NETCONF
What technology allows you to tunnel any layer 3 protocol through an IP transport network? - ANSWER>>GRE (Generic Routing Encapsulation) What IPv6 address is a link local multicast used to send a packet to all routers on a segment - ANSWER>>FF02:: In a split-MAC deployment which device is responsible for prioritizing packets and responding to beacon and probe requests? - ANSWER>>A lightweight AP What protocols are used by WPA to provide MICs and encyrption? - ANSWER>>CCMP and AES What command automatically generates SSH on a router - ANSWER>>crypto key generate rsa What information is not provided by an IP phone to a catalyst switch using CDP - ANSWER>>voice VLAN ID How would you configure DAI for a switch connected to 3 vlans - ANSWER>>ip arp inspection vlan 2- Enables an SDN controller to communicate with devices on the data plane - ANSWER>>Southbound API entirety of overlay and underlay network - ANSWER>>fabric enables an SDN controller to communicate with the application plane - ANSWER>>Northbound API creates VXLAN tunnels between SDA switches - ANSWER>>Overlay collection of devices that comprise of the IP network that connects to each fabric node - ANSWER>>underlay There are three routers, the link from A-B is a FastEthernet and from B-C is an ethernet link, what is the OSPF cost? - ANSWER>>
What component simpligies the management and deployment of wireless APs in a Cisco Autonomous WLAN - ANSWER>>WLSE (Wireless LAN Solution Engine) What protocols use UDP - ANSWER>>DNS, DHCP, TFTP, SNMP, NTP, Syslog What protocols use TCP - ANSWER>>HTTP, FTP, SMTP, SSH, Telnet What address does a switch use to make forwarding decisions? - ANSWER>>destination MAC address You are configuring security on a new Guest LAN using the WLC GUI, what security setting are most likely to be configured? - ANSWER>>Web Authentication and Web Passthrough What configuration management tool typically uses SSH to connect to remote nodes? - ANSWER>>Ansible What is true about an EIGRP feasible successor - ANSWER>>It has an advertised distance that is less then the feasible distance of the successor You run a show interface status command to troubleshoot connectivity issues, what causes are you trying to isolate? - ANSWER>>Speed and duplex mismatches What are northbound API's? - ANSWER>>OSGi and REST What are southbound API's? - ANSWER>>NETCONF, OpenFlow, OnePK, OpFlex What plane do Northbound API's communicate with - ANSWER>>Application plane What plane do Southbound API's communicate with - ANSWER>>Network Plane What is a CAM table (Content Addressable memory) - ANSWER>>stores information such as MAC addresses available on physical ports with their associated VLAN Parameters
What addresses does a CAM table use to populate the table - ANSWER>>Source MAC address True or False, a trunk port will show up when the show vlan command is ran - ANSWER>>False If the router iD is not manually configured, how is the router ID determined? - ANSWER>>First by the highest IP on the loopback interface, then by the highest IP among physical interfaces If you want to configure a WPA2 passphrase in ascii format, what management method should you use? - ANSWER>>PSK (Pre-Shared Key) This is also used for 64 bit hex notation What is used by WPA2 and WPA3 to provide encryption - ANSWER>>AES (Advanced Encryption Standard) What types of IPv6 address are not routable? - ANSWER>>FE80::/ this is a link- local address, and FF02::/16 this is a link-local multicast address What type of IPv6 address is 2000::/3 - ANSWER>>Global Unicast What type of IPv6 address is Fe80::/10 - ANSWER>>Link-Local Prefix What type of IPv6 address is fc00::/7 - ANSWER>>Unique Local Address What type of IPv6 address is ::1/128 - ANSWER>>Loopback Address What type of IPv6 address is ff00::/8 - ANSWER>>Multicast address In a controller based network what process is moved to the central controller? - ANSWER>>OSPF You issue service password-encryption command, which passwords will be encrypted in the future? - ANSWER>>Password configured by any means will be encrypted
