CCNAtogov1

If primary and secondary root switches with priority 16384 both experience catastrophic losses, which tertiary switch can take over?. a switch with priority 20480. a switch with priority 8192. a switch with priority 4096. a switch with priority 12288.

Which two statements about late collisions are true? (Choose two.). They may indicate a duplex mismatch. By definition, they occur after the 512th bit of the frame has been transmitted. They indicate received frames that did not pass the FCS match. They are frames that exceed 1518 bytes. They occur when CRC errors and interference occur on the cable.

Which command can you enter to set the default route for all traffic to an interface?. router(config)#ip route 0.0.0.0 0.0.0.0 GigabitEthernet0/1. router(config)#ip route 0.0.0.0 255.255.255.255 GigabitEthernet0/1. router(config-router)#default-information originate. router(config-router)#default-information originate always.

Which two spanning-tree port states does RSTP combine to allow faster convergence? (Choose two.). blocking. listening. learning. forwarding. discarding.

If a router has four interfaces and each interface is connected to four switches, how many broadcast domains are present on the router?. 1. 2. 4. 8.

Match the items on the left with appropriate OSI layer on the right. (Not all options are used.). bits. packets. udp. IP address. segments. MAC address. windowing. routing. switching.

The left describes the types of cables, while the right describes the purposes of the cables. Drag the items on the left to the proper locations. (Not all items can be used.). crossover. null modem. straight-through. rollover. 9-25 pin serial.

Which command enables IPv6 forwarding on a Cisco router?. ipv6 local. ipv6 host. ipv6 unicast-routing. ipv6 neighbor.

Refer to the exhibit. What is the most appropriate summarization for these routes?. 10.0.0.0 /21. 10.0.0.0 /22. 10.0.0.0 /23. 10.0.0.0 /24.

Which set of commands is recommended to prevent the use of a hub in the access layer?. * switch(config-if)#switchport mode trunk switch(config-if)#switchport port-security maximum 1 *. * switch(config-if)#switchport mode trunk switch(config-if)#switchport port-security mac-address 1 *. * switch(config-if)#switchport mode access switch(config-if)#switchport port-security maximum 1 *. * switch(config-if)#switchport mode access switch(config-if)#switchport port-security mac-address 1 *.

A router has learned three possible routes that could be used to reach a destination network. One route is from EIGRP and has a composite metric of 20514560. Another route is from OSPF with a metric of 782. The last is from RIPv2 and has a metric of 4. Which route or routes will the router install in the routing table?. the OSPF route. the EIGRP route. the RIPv2 route. all three routes. the OSPF and RIPv2 routes.

Two routers named Atlanta and Brevard are connected via their serial interfaces as illustrated, but they are unable to communicate. The Atlanta router is known to have the correct configuration. Given the partial configurations, identify the fault on the Brevard router that is causing the lack of connectivity. incompatible IP address. insufficient bandwidth. incorrect subnet mask. incompatible encapsulation. link reliability too low. IPCP closed.

A network administrator needs to configure a serial link between the main office and a remote location. The router at the remote office is a non-Cisco router. How should the network administrator configure the serial interface of the main office router to make the connection?. * Main(config)# interface serial 0/0 Main(config-if)# ip address 172.16.1.1 255.255.255.252 Main(config-if)# no shut *. * Main(config)# interface serial 0/0 Main(config-if)# ip address 172.16.1.1 255.255.255.252 Main(config-if)# encapsulation ppp Main(config-if)# no shut *. * Main(config)# interface serial 0/0 Main(config-if)# ip address 172.16.1.1 255.255.255.252 Main(config-if)# encapsulation frame-relay Main(config-if)# authentication chap Main(config-if)# no shut *. * Main(config)# interface serial 0/0 Main(config-if)#ip address 172.16.1.1 255.255.255.252 Main(config-if)#encapsulation ietf Main(config-if)# no shut *.

Which Layer 2 protocol encapsulation type supports synchronous and asynchronous circuits and has built-in security mechanisms?. HDLC. PPP. X.25. Frame relay.

Refer to the exhibit. The two connected ports on the switch are not turning orange or green. What would be the most effective steps to troubleshoot this physical layer problem? (Choose three.). Ensure that the Ethernet encapsulations match on the interconnected router and switch ports. Ensure that cables A and B are straight-through cables. Ensure cable A is plugged into a trunk port. Ensure the switch has power. Reboot all of the devices. Reseat all cables.

A network administrator is troubleshooting the OSPF configuration of routers R1 and R2. The routers cannot establish an adjacency relationship on their common Ethernet link. The OSPF area is not configured properly. The priority on R1 should be set higher. The cost on R1 should be set higher. The hello and dead timers are not configured properly. A backup designated router needs to be added to the network. The OSPF process ID numbers must match.

What will happen if a private IP address is assigned to a public interface connected to an ISP?. Addresses in a private range will be not be routed on the Internet backbone. Only the ISP router will have the capability to access the public network. The NAT process will be used to translate this address to a valid IP address. A conflict of IP addresses happens, because other public routers can use the same range.

Refer to the exhibit. The Bigtime router is unable to authenticate to the Littletime router. What is the cause of the problem?. The usernames are incorrectly configured on the two routers. The passwords do not match on the two routers. CHAP authentication cannot be used on a serial interface. The routers cannot be connected from interface S0/0 to interface S0/0. With CHAP authentication, one router must authenticate to another router. The routers cannot be configured to authenticate to each other.

What will be the result if the following configuration commands are implemented on a Cisco switch? Switch(config-if)# switchport port-security Switch(config-if)# switchport port-security mac-address sticky. A dynamically learned MAC address is saved in the startup-configuration file. A dynamically learned MAC address is saved in the running-configuration file. A dynamically learned MAC address is saved in the VLAN database. Statically configured MAC addresses are saved in the startup-configuration file if frames from that address are received. Statically configured MAC addresses are saved in the running-configuration file if frames from that address are received.

Refer to the exhibit. The following commands are executed on interface fa0/1 of 2950Switch. 2950Switch(config-if)# switchport port-security 2950Switch(config-if)# switchport port-security mac-address sticky 2950Switch(config-if)# switchport port-security maximum 1 The Ethernet frame that is shown arrives on interface fa0/1. What two functions will occur when this frame is received by 2950Switch? (Choose two.). The MAC address table will now have an additional entry of fa0/1 FFFF.FFFF.FFFF. Only host A will be allowed to transmit frames on fa0/1. This frame will be discarded when it is received by 2950Switch. All frames arriving on 2950Switch with a destination of 0000.00aa.aaaa will be forwarded out fa0/1. Hosts B and C may forward frames out fa0/1 but frames arriving from other switches will not be forwarded out fa0/1. Only frames from source 0000.00bb.bbbb, the first learned MAC address of 2950Switch, will be forwarded out fa0/1.

Which command would you configure globally on a Cisco router that would allow you to view directly connected Cisco devices?. enable cdp. cdp enable. cdp run. run cdp.

A Cisco router is booting and has just completed the POST process. It is now ready to find and load an IOS image. What function does the router perform next?. It checks the configuration register. It attempts to boot from a TFTP server. It loads the first image file in flash memory. It inspects the configuration file in NVRAM for boot instructions.

What are three advantages of VLANs? (Choose three.). VLANs establish broadcast domains in switched networks. VLANs utilize packet filtering to enhance network security. VLANs provide a method of conserving IP addresses in large networks. VLANs provide a low-latency internetworking alternative to routed networks. VLANs allow access to network services based on department, not physical location. VLANs can greatly simplify adding, moving, or changing hosts on the network.

Refer to the exhibit. The output that is shown is generated at a switch. Which three statements are true? (Choose three.). All ports will be in a state of discarding, learning, or forwarding. Thirty VLANs have been configured on this switch. The bridge priority is lower than the default value for spanning tree. All interfaces that are shown are on shared media. All designated ports are in a forwarding state. This switch must be the root bridge for all VLANs on this switch.

Which two commands can be used to verify a trunk link configuration status on a given Cisco switch interface? (Choose two.). show interface trunk. show interface interface. show ip interface brief. show interface vlan. show interface switchport.

Which two states are the port states when RSTP has converged? (Choose two.). discarding. listening. learning. forwarding. disabled.

Refer to the exhibit. A technician has installed Switch B and needs to configure it for remote access from the management workstation connected to Switch A . Which set of commands is required to accomplish this task?. * SwitchB(config)# interface FastEthernet 0/1 SwitchB(config-if)# ip address 192.168.8.252 255.255.255.0 SwitchB(config-if)# no shutdown *. * SwitchB(config)# interface vlan 1 SwitchB(config-if)# ip address 192.168.8.252 255.255.255.0 SwitchB(config-if)# ip default-gateway 192.168.8.254 255.255.255.0 SwitchB(config-if)# no shutdown *. * SwitchB(config)# ip default-gateway 192.168.8.254 SwitchB(config)# interface vlan 1 SwitchB(config-if)# ip address 192.168.8.252 255.255.255.0 SwitchB(config-if)# no shutdown *. * SwitchB(config)# ip default-network 192.168.8.254 SwitchB(config)# interface vlan 1 SwitchB(config-if)# ip address 192.168.8.252 255.255.255.0 SwitchB(config-if)# no shutdown *. * SwitchB(config)# ip route 192.168.8.254 255.255.255.0 SwitchB(config)# interface FastEthernet 0/1 SwitchB(config-if)# ip address 192.168.8.252 255.255.255.0 SwitchB(config-if)# no shutdown *.

Which of the following are benefits of VLANs? (Choose three.). They increase the size of collision domains. They allow logical grouping of users by function. They can enhance network security. They increase the size of broadcast domains while decreasing the number of collision domains. They increase the number of broadcast domains while decreasing the size of the broadcast domains. They simplify switch administration.

What are three benefits of implementing VLANs? (Choose three.). A higher level of network security can be reached by separating sensitive data traffic from other network traffic. A more efficient use of bandwidth can be achieved allowing many physical groups to use the same network infrastructure. A more efficient use of bandwidth can be achieved allowing many logical networks to use the same network infrastructure. Broadcast storms can be mitigated by increasing the number of broadcast domains, thus reducing their size. Broadcast storms can be mitigated by decreasing the number of broadcast domains, thus increasing their size. VLANs make it easier for IT staff to configure new logical groups, because the VLANs all belong to the same broadcast domain. Port-based VLANs increase switch-port use efficiency, thanks to 802.1Q trunks.

Which three statements accurately describe Layer 2 Ethernet switches? (Choose three.). Spanning Tree Protocol allows switches to automatically share VLAN information. Establishing VLANs increases the number of broadcast domains. Switches that are configured with VLANs make forwarding decisions based on both Layer 2 and Layer 3 address information. Microsegmentation decreases the number of collisions on the network. In a properly functioning network with redundant switched paths, each switched segment will contain one root bridge with all its ports in the forwarding state. All other switches in that broadcast domain will have only one root port. If a switch receives a frame for an unknown destination, it uses ARP to resolve the address.

Which of the following correctly describe steps in the OSI data encapsulation process? (Choose two.). The transport layer divides a data stream into segments and may add reliability and flow control information. The data link layer adds physical source and destination addresses and an FCS to the segment. Packets are created when the network layer encapsulates a frame with source and destination host addresses and protocol-related control information. Packets are created when the network layer adds Layer 3 addresses and control information to a segment. The presentation layer translates bits into voltages for transmission across the physical link.

Which of the following describes the roles of devices in a WAN? (Choose three.). A CSU/DSU terminates a digital local loop. A modem terminates a digital local loop. A CSU/DSU terminates an analog local loop. A modem terminates an analog local loop. A router is commonly considered a DTE device. A router is commonly considered a DCE device.