Which protocol does an IPv4 host use to obtain a dynamically assigned IP address?
A. ARP
B. DHCP
C. CDP
D. DNS
Correct Answer: B
Refer to the exhibit. An access list is required to permit traffic from any host on interface G0/0 and deny traffic from interface G/0/1. Which access list must be applied?
A. ip access-list standard 99 Permit 10.100.100.0 0.0.0.255 Deny 192.168.0.0 0.0.255.255
B. ip access-list standard 99 Permit 10.100.100.0 0.0.0.255 Deny 192.168.0.0 0.255.255.255
C. ip access-list standard 100 Permit 10.100.100.0 0.0.0.255 Deny 192.168.0.0 0.255.255.255
D. ip access-list standard 100 Permit 10.100.100.0 0.0.0.255 Deny 192.168.0.0 0.0.255.255
Correct Answer: A
How does a switch process a frame received on Fa0/1 with the destination MAC address of 0e38.7363.657b when the table is missing the address?
A. lt drops the frame immediately.
B. It forwards the frame back out of interface Fa0/1.
C. It floods the frame to all interfaces except Fa0/1.
D. It holds the frame until the MAC address timer expires and then drops the frame.
Correct Answer: C
Which condition must be met before an NMS handles an SNMP trap from an agent?
A. The NMS software must be loaded with the MIB associated with the trap.
B. The NMS must be configured on the same router as the SNMP agent
C. The NMS must receive a trap and an inform message from the SNMP agent within a configured interval
D. The NMS must receive the same trap from two different SNMP agents to verify that it is reliable.
Correct Answer: A
What is the purpose of a southbound API in a control based networking architecture?
A. Facilities communication between the controller and the applications
B. Facilities communication between the controller and the networking hardware
C. allows application developers to interact with the network
D. integrates a controller with other automation and orchestration tools.
Correct Answer: B
Which switch technology establishes a network connection immediately when it is plugged in?
A. PortFast
B. BPDU guard
C. UplinkFast
D. BackboneFast
Correct Answer: C
What causes a port to be placed in the err-disabled state?
A. latency
B. port security violation
C. shutdown command issued on the port
D. nothing plugged into the port
Correct Answer: B
An engineer needs to add an old switch back into a network. To prevent the switch from corrupting the VLAN database which actionmust be taken?
A. Add the switch in the VTP domain with a lower revision number
B. Add the switch with DTP set to dynamic desirable
C. Add the switch in the VTP domain with a higher revision number
D. Add the switch with DTP set to desirable
Correct Answer: A
Which JSON data type is an unordered set of attribute- value pairs?
A. array
B. string
C. object
D. Boolean
Correct Answer: C
What occurs when overlapping Wi-Fi channels are implemented?
A. The wireless network becomes vulnerable to unauthorized access.
B. Wireless devices are unable to distinguish between different SSIDs
C. Users experience poor wireless network performance.
D. Network communications are open to eavesdropping.
Correct Answer: C
Which technology allows for multiple operating systems to be run on a single host computer?
A. virtual routing and forwarding
B. network port ID visualization
C. virtual device contexts
D. server visualization
Correct Answer: D
Which two QoS tools provides congestion management? (Choose two)
A. CAR
B. CBWFQ
C. PQ
D. PBR
E. FRTS
Correct Answer: BC
An engineer must configure traffic for a VLAN that is untagged by the switch as it crosses a trunk link. Which command should beused?
A. switchport trunk allowed vlan 10
B. switchport trunk native vlan 10
C. switchport mode trunk
D. switchport trunk encapsulation dot1q
Correct Answer: B
How does a Cisco Unified Wireless network respond to Wi-Fi channel overlap?
A. It alternates automatically between 2.4 GHz and 5 GHz on adjacent access points
B. It allows the administrator to assign channels on a per-device or per-interface basis.
C. It segregates devices from different manufacturers onto different channels.
D. It analyzes client load and background noise and dynamically assigns a channel.
Correct Answer: A
What does a switch use to build its MAC address table?
A. VTP
B. DTP
C. egress traffic
D. ingress traffic
Correct Answer: D
Which network plane is centralized and manages routing decisions?
A. policy plane
B. management plane
C. control plane
D. data plane
Correct Answer: C Section: choice Explanation
What does a router do when configured with the default DNS lookup settings, and a URL is entered on the CLI?
A. initiates a ping request to the URL
B. prompts the user to specify the desired IP address
C. continuously attempts to resolve the URL until the command is cancelled
D. sends a broadcast message in an attempt to resolve the URL
Correct Answer: D
Switch 1 VLAN 110 - 32778.0018.184e.3c00 Switch 2 VLAN 110 - 24586.001a.e3ff.a680 Switch 3 VLAN 110 - 28682.0022.55cf.cc00 Switch 4 VLAN 110 - 64000.0e38.8320.450f
A. Switch 1
B. Switch 2
C. Switch 3
D. Switch 4
Correct Answer: B
Which type of information resides on a DHCP server ?
A. a list of statically assigned MAC addresses
B. a list of the available IP addresses in a pool
C. a list of public IP addresses and their corresponding names
D. usernames and passwords for the end users in a domain
Correct Answer: B
Which spanning-tree enhancement avoids the learning and listening states and immediately places ports in the forwarding state ?
A. BPDU filter
B. Backbonefast
C. BPDU guard
D. PortFast
Correct Answer: D
What is a DNS lookup operation?
A. DNS server pings the destination to verify that it is available
B. serves requests over destination port 53
C. DNS server forwards the client to an alternate IP address when the primary IP is down
D. responds to a request for IP address to domain name resolution to the DNS server
Correct Answer: D
Refer to the exhibit. A network engineer must configured communication between PC A and the File Server. To prevent interruption forany other communications, which command must be configured?
A. Switch trunk allowed vlan 12
B. Switchport trunk allowed vlan none
C. Switchport trunk allowed vlan add 13
D. Switchport trunk allowed vlan remove 10-11
Correct Answer: C
What is a characteristic of a SOHO network?
A. connects each switch to every other switch in the network
B. enables multiple users to share a single broadband connection
C. provides high throughput access for 1000 or more users
D. includes at least three tiers of devices to provide load balancing and redundancy
Correct Answer: B
Which resource is able to be shared among virtual machines deployed on the same physical server?
A. disk
B. applications
C. VM configuration file
D. operating system
Correct Answer: A
Which implementation provides the strongest encryption combination for the wireless environment?
A. WPA2 + AES
B. WPA + AES
C. WEP
D. WPA + TKIP
Correct Answer: A
Refer to the exhibit. After running the code in the exhibit, which step reduces the amount of data that the NETCONF server returns to the NETCONF client, to only the interface’s configuration?
A. Use the Ixml library to parse the data returned by the NETCONF server for the interfacea??s configuration.
B. Create an XML filter as a string and pass it to get_config() method as an argument.
C. Create a JSON filter as a string and pass it to the get_config() method as an argument.
D. Use the JSON library to parse the data returned by the NETCONF server for the interfacea??s configuration.
Correct Answer: D
What is an appropriate use for private IPv4 addressing?
A. on the public-facing interface of a firewall
B. to allow hosts inside to communicate in both directions with hosts outside the organization
C. on internal hosts that stream data solely to external resources
D. on hosts that communicates only with other internal hosts
Correct Answer: D
What are two functions of an SDN controller? (Choose two)
A. Layer 2 forwarding
B. coordinating VTNs
C. tracking hosts
D. managing the topology
E. protecting against DDoS attacks
Correct Answer: BD
If a switch port receives a new frame while it is actively transmitting a previous frame, how does it process the frames?
A. The new frame is delivered first, the previous frame is dropped, and a retransmission request is sent.
B. The previous frame is delivered, the new frame is dropped, and a retransmission request is sent.
C. The new frame is placed in a queue for transmission after the previous frame.
D. The two frames are processed and delivered at the same time.
Correct Answer: C Section: choice Explanation
Refer to the exhibit. The ntp server 192.168.0.3 command has been configured on router 1 to make it an NTP client of router 2. Which command must be configured on router 2 so that it operates in server-only mode and relies only on its internal clock?
A. Router2(config)#ntp passive
B. Router2(config)#ntp server 172.17.0.1
C. Router2(config)#ntp master 4
D. Router2(config)#ntp server 192.168.0.2
Correct Answer: C
Which WAN topology provides a combination of simplicity quality, and availability?
A. partial mesh
B. full mesh
C. point-to-point
D. hub-and-spoke
Correct Answer: C
Why does a switch flood a frame to all ports?
A. The frame has zero destination MAC addresses.
B. The source MAC address of the frame is unknown
C. The source and destination MAC addresses of the frame are the same
D. The destination MAC address of the frame is unknown.
Correct Answer: D
A network administrator needs to aggregate 4 ports into a single logical link which must negotiate layer 2 connectivity to ports on another switch What must be configured when using active mode on both sides of the connection?
A. 802.1q trunks
B. Cisco vPC
C. LLDP
D. LACP
Correct Answer: D
In which situation is private IPv4 addressing appropriate for a new subnet on the network of an organization?
A. There is limited unique address space, and traffic on the new subnet will stay local within the organization.
B. The network has multiple endpoint listeners, and it is desired to limit the number of broadcasts.
C. Traffic on the subnet must traverse a site-to-site VPN to an outside organization.
D. The ISP requires the new subnet to be advertised to the internet for web services.
Correct Answer: A
Aside from discarding, which two states does the switch port transition through while using RSTP (802.1w)? (Choose two)
A. listening
B. blocking
C. forwarding
D. learning
E. speaking
Correct Answer: CD
Which state does the switch port move to when PortFast is enabled?
A. forwarding
B. listening
C. blocking
D. learning
Correct Answer: A
Refer to the exhibit. An access list is created to deny Telnet access from host PC-1 to RTR-1 and allow access from all other hosts A Telnet attempt from PC-2 gives this message:”% Connection refused by remote host” Without allowing Telnet access from PC-1, which action must be taken to permit the traffic?
A. Add the access-list 10 permit any command to the configuration
B. Remove the access-class 10 in command from line vty 0.4.
C. Add the ip access-group 10 out command to interface g0/0.
D. Remove the password command from line vty 0 4.
Correct Answer: A
What is a role of wireless controllers in an enterprise network?
A. centralize the management of access points in an enterprise network
B. support standalone or controller-based architectures
C. serve as the first line of defense in an enterprise network
D. provide secure user logins to devices on the network.
Correct Answer: A
What is the effect when loopback interfaces and the configured router ID are absent during the OSPF Process configuration?
A. No router ID is set, and the OSPF protocol does not run.
B. The highest up/up physical interface IP address is selected as the router ID.
C. The lowest IP address is incremented by 1 and selected as the router ID.
D. The router ID 0.0.0.0 is selected and placed in the OSPF process.
Correct Answer: B
What is recommended for the wireless infrastructure design of an organization?
A. group access points together to increase throughput on a given channel
B. configure the first three access points are configured to use Channels 1, 6, and 11
C. include a least two access points on nonoverlapping channels to support load balancing
D. assign physically adjacent access points to the same Wi-Fi channel
Correct Answer: B
Which 802.11 frame type is indicated by a probe response after a client sends a probe request?
A. action
B. management
C. control
D. data
Correct Answer: B
How do servers connect to the network in a virtual environment?
A. wireless to an access point that is physically connected to the network
B. a cable connected to a physical switch on the network
C. a virtual switch that links to an access point that is physically connected to the network
D. a software switch on a hypervisor that is physically connected to the network
Correct Answer: D
Which CRUD operation corresponds to the HTTP GET method?
A. read
B. update
C. create
D. delete
Correct Answer: A
With REST API, which standard HTTP header tells a server which media type is expected by the client?
A. Accept-Encoding: gzip. deflate
B. Accept-Patch: text/example; charset=utf-8
C. Content-Type: application/json; charset=utf-8
D. Accept: application/json
Correct Answer: D
Which device tracks the state of active connections in order to make a decision to forward a packet through?
A. wireless access point
B. firewall
C. wireless LAN controller
D. router
Correct Answer: B
Refer to the exhibit. PC1 is trying to ping PC3 for the first time and sends out an ARP to S1. Which action is taken by S1?
A. It forwards it out G0/3 only
B. It is flooded out every port except G0/0.
C. It drops the frame
D. It forwards it out interface G0/2 only.
Correct Answer: B
Refer to the exhibit. A network administrator has been tasked with securing VTY access to a router. Which access-list entryaccomplishes this task?
A. access-list 101 permit tcp 10.1.10 0.0.0.255 172.16.10 0.0.0.255 eq ssh
B. access-list 101 permit tcp 10.11.0 0.0.0.255 172.16.10 0.0.0.255 eq scp
C. access-list 101 permit tcp 10.11.0 0.0.0.255 172.16.10 0.0.0.255 eq telnet
D. access-list 101 permit tcp 10.1.10 0.0.0.255 172.16.10 0.0.0.255 eq https
Correct Answer: A
A network administrator must enable DHCP services between two sites. What must be configured for the router to passDHCPDISCOVER messages on to the server?
A. a DHCP Relay Agent
B. DHCP Binding
C. a DHCP Pool
D. DHCP Snooping
Correct Answer: A
Which device controls the forwarding of authentication requests for users when connecting to the network using a lightweight accesspoint?
A. TACACS server
B. wireless access point
C. RADIUS server
D. wireless LAN controller
Correct Answer: D
Refer to the exhibit. What is the result if Gig1/11 receives an STP BPDU?
A. The port transitions to STP blocking
B. The port transitions to the root port
C. The port immediately transitions to STP forwarding.
D. The port goes into error-disable state
Correct Answer: D