Explanation:
The EIGRP route will be placed in the routing table. When a router learns multiple routes to a network from different routing table population methods, which includes routes from routing protocols and static routes created by the administrator, it does so in two steps:

– It selects the route with the lowest administrative distance.
– If multiple routes exist with equal administrative distance (usually meaning they learned from the same routing protocol), it chooses from the routes by selecting the one with the lowest cost.

Since EIGRP has the lowest default administrative distance (90), the EIGRP route will be chosen.

The RIP route will not be chosen because it has a default administrative distance of 120.

The OSPF route will not be chosen because it has a default administrative distance of 110.

Explanation:
SwitchB will forward the frame out FastEthernet0/10 only. The MAC address table indicates that the switch has the destination MAC address in its table and the destination is located on switch port FastEthernet 0/10, therefore it will switch the frame to that interface.

It will not forward the frame out all ports. It will only do that when it receives a frame for which it knows no destination and then it will forward it out all ports except the one on which it arrived. For example if it were sending a frame to 00c0.5658.d26e, which is nowhere to be found in the table and the frame arrived on port FastEthernet0/10 it would send the frame to very port except FastEthernet0/10.

It will not forward the frame out FastEthernet0/4. The MAC address located on that port is 00c0.57ce.ce33, which means that is the port on which the frame arrived.

It will not drop the frame. It will not drop the frame when it has the destination in its MAC table.

It will record the source MAC address. That address is already present in the table.

Explanation:
The overload keyword, when specified with the ip nat inside command, translates multiple devices in the internal network to a single address in the IP address pool. For example:
ip nat pool test 172.28.15.1 172.28.15.1 prefix 24

In this example, the NAT pool named “test” only has a range of one address. Another variation of this command is as follows:

ip nat inside source list 3 interface serial 0 overload

This command configures NAT to overload on the address assigned to the serial 0 interface.

When this variation is used, the command uses a list named 3 to determine the addresses in the pool

With static NAT, translation mappings are created statically and are placed in the translation tables regardless of whether there is traffic flowing.

With dynamic NAT, the translation mappings table is populated as the required traffic flows through NAT-enabled devices.

Override is not a valid NAT option. There is no such option.

Explanation:
The command snmp-server host 192.168.5.5 informs version 3 noauth CISCO will configure the host to authenticate a user by username and send clear text notifications. The receiver will then acknowledge receipt of the notification. The keyword informs indicates that an inform message type will be used. Unlike a trap, an inform message is acknowledged by the receiver.

The version 3 keyword indicates that version 3 is in use, which is the ONLY version that supports authentication and encryption. Finally, the noauth keyword specifies authentication by username only and no encryption.

The command snmp-server host 192.168.5.5 traps version 3 auth public configures the host to send traps rather than informs.

The command snmp-server host 192.168.5.5 informs version 2c public specifies version 2c, which only support community string-based authentication.
The command snmp-server host 192.168.5.5 informs version 3 authpriv public specifies the keyword authpriv, which indicates encryption will be used and authentication based on HMAC-MD5 or HMAC-SHA algorithms.

Explanation:
You need to address Open System Interconnect (OSI) Layer 1, the Physical layer, to resolve the problem. IP-based video conferencing applications are bandwidth- intensive and may cause the network to slow down unless there is enough bandwidth to ensure proper network operation. To resolve bandwidth problems, you may need to switch to a higher capacity network backbone, which may require a change of cabling or media types, such as fiber optics. Cabling and network media types are defined at OSI Layer 1.

The seven layers of the OSI model are as follows, in descending order from Layer 7 to Layer 1:

– Application: Interacts directly with the application. It provides application services, such as e-mail and File Transfer Protocol (FTP).

– Presentation: Enables coding and conversion functions for application layer data. The Presentation layer converts data into a format that is acceptable by the application layer. The formatting and encryption of data is done at this layer.

– Session: Creates, manages, and terminates sessions between communicating nodes. The session layer handles the service requests and responses that take place between different hosts.

– Transport: Delivers data sequentially and without errors. This layer manages data transmission between devices, a process known as flow control. The Transport layer protocols are Transmission Control Protocol (TCP) and User Datagram Protocol (UDP).

– Network: Defines the network address or the Internet Protocol (IP) address, which is then used by the routers to forward the packets.

– Data Link: Ensures the reliable delivery of data to the physical address of the destination.

– Physical layer: This layer includes the physical equipment involved in the data transfer, such as the cables and switches. It also include fiber optic, wireless, and Ethernet.

Explanation:
The show controllers command provides hardware-related information used to troubleshoot and diagnose issues with Cisco router interfaces. The output of the command is as follows:

routerA# show controllers serial 0
HD unit 1, idb = 0x1C44E8, driver structure at 0x1CBAC8 buffer size 1524 HD unit 1
V.35 DTE cable, clock rate 64000

The show interfaces, show ip interface, and show interface switchport commands do not display any hardware-related information, such as connected cable types.

The show interface dce command is incorrect because this is not a valid Cisco IOS command.