varios ccna

What should be done prior to backing up an IOS image to a TFTP server? (Choose three.). Make sure that the server can be reached across the network. Check that authentication for TFTP access to the server is set. Assure that the network server has adequate space for the IOS image. Verify file naming and path requirements. Make sure that the server can store binary files. Adjust the TCP window size to speed up the transfer.

Refer to the exhibit. What type of connection would be supported by the cable diagram shown?. PC to router. PC to switch. server to router. router to router.

Refer to the exhibit. What type of connection would be supported by the cable diagram shown?. PC to router. PC to switch. server to switch. switch to router.

Which two statements are true about the command ip route 172.16.3.0 255.255.255.0 192.168.2.4? (Choose two.). It establishes a static route to the 172.16.3.0 network. It configures the router to send any traffic for an unknown destination to the 172.16.3.0 network. It creates a static route to the 192.168.2.0 network. It uses the default administrative distance. It configures the router to send any traffic for an unknown destination out the interface with the address 192.168.2.4. It is a route that would be used last if other routes to the same destination exist.

A network administrator needs to configure port security on a switch. Which two statements are true? (Choose two.). The network administrator can apply port security to dynamic access ports. The network administrator can apply port security to EtherChannels. When dynamic MAC address learning is enabled on an interface, the switch can learn new addresses, up to the maximum defined. The sticky learning feature allows the addition of dynamically learned addresses to the running configuration. The network administrator can configure static secure or sticky secure MAC addresses in the voice VLAN.

Which two are advantages of static routing when compared to dynamic routing? (Choose two.). Configuration complexity decreases as network size increases. Security increases because only the network administrator may change the routing table. Route summarization is computed automatically by the router. Routing tables adapt automatically to topology changes. An efficient algorithm is used to build routing tables, using automatic updates. Routing updates are automatically sent to neighbors. links. Routing traffic load is reduced when used in stub network.

What are three features of the IPv6 protocol? (Choose three.). checksums. optional IPsec. autoconfiguration. complicated header. plug-and-play. no broadcasts.

At which layer of the OSI model does IPsec operate?. network. transport. session. application.

Which term describes the process of encapsulating IPv6 packets inside IPv4 packets?. tunneling. hashing. routing. NAT.

What functions do routers perform in a network? (Choose two.). packet switching. access layer security. path selection. VLAN membership assignment. bridging between LAN segments. microsegmentation of broadcast domains.

How many subnets can be gained by subnetting 172.17.32.0/23 into a /27 mask, and how many usable host addresses will there be per subnet?. 8 subnets, 31 hosts. 8 subnets, 32 hosts. 16 subnets, 30 hosts. 16 subnets, 32 hosts. A Class B address can't be subnetted into the fourth octet.

Which device might be installed at a branch office to enable and manage an IPsec site-to-site VPN?. Cisco IOS IPsec/SSL VPN client. Cisco VPN Client. ISDN terminal adapter. Cisco Adaptive Security Appliance.

Workstation A has been assigned an IP address of 192.0.2.24/28. Workstation B has been assigned an IP address of 192.0.2.100/28. The two workstations are connected with a straight- through cable. Attempts to ping between the hosts are unsuccessful. What are two things that could be attempted that would allow communications between the hosts? (Choose two.). Replace the straight-through cable with a crossover cable. Change the subnet mask of the hosts to /25. Change the subnet mask of the hosts to /26. Change the address of Workstation A to 192.0.2.15. Change the address of Workstation B to 192.0.2.111.

You have been asked to come up with a subnet mask that will allow all three web servers to be on the same network while providing the maximum number of subnets. Which network address and subnet mask meet this requirement?. 192.168.252.8 255.255.255.252. 168.252.16 255.255.255.252. 192.168.252.8 255.255.255.248. 192.168.252.0 255.255.255.252. 192.168.252.16 255.255.255.240.

Why do large OSPF networks use a hierarchical design?(choose three). to confine network instability to single areas of the network. to reduce the complexity of router configuration. to speed up convergence. to lower costs by replacing routers with distribution layer switches. to decrease latency by increasing bandwidth. to reduce routing overhead.

Which ip address would a network technician ping on the local host, to test the ip stack?. 224.0.0.9. 224.0.0.5. 127.0.0.1. 255.255.255.255.

The network administrator has asked you to check the status of the workstation's IP stack by pinging the loopback address. Which address would you ping to perform this task?. 10.1.1.1. 127.0.0.1. 192.168.0.1. 239.1.1.1.

Which command is necessary to permit SSH or Telnet access to a cisco switch that is otherwise configured for these vty line protocols?. transport type all. transport output all. transport preferred all. transport input all.

In which solution is a router ACL used?. protecting a server from unauthorized access. controlling path selection, based on the route metric. reducing router CPU utilization. filtering packets that are passing through a router.

Refer to the exhibit. Which two devices can be used to complete the connection between the WAN router at the customer site and the service provider? (Choose two.). modem. ISDN TA. CSU/DSU. ATM switch. Frame Relay switch. WAN switch.

Drag each category on the left to its corresponding router output on the right. Each router output line is in the result of a show ip interface command. (Not all categories are used.). Layer 1 problem. Layer 2 problem. Layer 3 problem. port operational. port disabled.

In which circumstance are multiple copies of the same unicast frame likely to be transmitted in a switched LAN?. after broken links are re-established. in an improperly implemented redundant topology. when upper-layer protocols require high reliability. during high traffic periods. when a dual ring topology is in use.

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.

Refer to the exhibit. Hosts in network 192.168.2.0 are unable to reach hosts in network 192.168.3.0. Based on the output from RouterA, what are two possible reasons for the failure?(Choose two). The cable that is connected to S0/0 on RouterA is faulty. Interface S0/0 on RouterB is administratively down. Interface S0/0 on RouterA is configured with an incorrect subnet mask. The IP address that is configured on S0/0 of RouterB is not in the correct subnet. Interface S0/0 on RouterA is not receiving a clock signal from the CSU/DSU. The encapsulation that is configured on S0/0 of RouterB does not match the encapsulation that is configured on S0/0 of RouterA.

The loopback interfaces on R4 with the IP addresses of 10.4.4.4/32, 10.4.4.5/32 and 10.4.4.6/32 are not appearing in the routing table of R5. Why are the interfaces missing?. The interfaces are shutdown, so they are not being advertised. R4 has been incorrectly configured to be in another AS, so it does not peer with R5. Automatic summarization is enabled, so only the 10.0.0.0 network is displayed. The loopback addresses haven`t been advertised, and the network command is missing on R4.