CCNA 1 Ch. 8-10

Refer to the exhibit. A network administrator is connecting a new host to the Manager LAN. The host needs to communicate with remote networks. What IP address would be configured as the default gateway on the new host? 10.118.63.65 10.118.62.1 10.62.63.254 10.118.62.196 209.165.200.87

10.118.62.196

Refer to the exhibit. A user PC has successfully transmitted packets to www.cisco.com. Which IP address does the user PC target in order to forward its data off the local network? 172.20.0.254 172.24.255.4 172.24.255.17 172.20.1.18 172.24.1.22

172.20.0.254

Where are IPv4 address to Layer 2 Ethernet address mappings maintained on a host computer? ARP cache routing table MAC address table neighbor table

ARP cache

What happens when the transport input ssh command is entered on the switch vty lines? Communication between the switch and remote users is encrypted. The switch requires remote connections via a proprietary client software. The switch requires a username/password combination for remote access. The SSH client on the switch is enabled.

Communication between the switch and remote users is encrypted.

A new network administrator has been asked to enter a banner message on a Cisco device. What is the fastest way a network administrator could test whether the banner is properly configured? Reboot the device. Enter CTRL-Z at the privileged mode prompt. Exit global configuration mode. Exit privileged EXEC mode and press Enter . Power cycle the device.

Exit privileged EXEC mode and press Enter .

Which destination address is used in an ARP request frame? 255.255.255.255 FFFF.FFFF.FFFF AAAA.AAAA.AAAA 0.0.0.0 the physical address of the destination host

FFFF.FFFF.FFFF

Which statement describes a feature of the IP protocol? IP encapsulation is modified based on network media. IP relies on upper layer services to handle situations of missing or out-of-order packets. IP relies on Layer 2 protocols for transmission error control. MAC addresses are used during the IP packet encapsulation.

IP relies on upper layer services to handle situations of missing or out-of-order packets.

Refer to the exhibit. Consider the IP address configuration shown from PC1. What is a description of the default gateway address? It is the IP address of the ISP network device located in the cloud. It is the IP address of Switch1 that connects PC1 to other devices on the same LAN. It is the IP address of the Router1 interface that connects the PC1 LAN to Router1. It is the IP address of the Router1 interface that connects the company to the Internet.

It is the IP address of the Router1 interface that connects the PC1 LAN to Router1.

What property of ARP allows hosts on a LAN to send traffic to remote networks? The source MAC address appears in the header of the Ethernet frame. The destination MAC address FF-FF-FF-FF-FF-FF appears in the header of the Ethernet frame. Local hosts learn the MAC address of the default gateway. The port-to-MAC address table on a switch has the same entries as the ARP table on the switch.

Local hosts learn the MAC address of the default gateway.

What are two potential network problems that can result from ARP operation? (Choose two.) Network attackers could manipulate MAC address and IP address mappings in ARP messages with the intent of intercepting network traffic. On large networks with low bandwidth, multiple ARP broadcasts could cause data communication delays. Manually configuring static ARP associations could facilitate ARP poisoning or MAC address spoofing. Multiple ARP replies result in the switch MAC address table containing entries that match the MAC addresses of hosts that are connected to the relevant switch port. Large numbers of ARP request broadcasts could cause the host MAC address table to overflow and prevent the host from communicating on the network.

On large networks with low bandwidth, multiple ARP broadcasts could cause data communication delays. Network attackers could manipulate MAC address and IP address mappings in ARP messages with the intent of intercepting network traffic.

What IPv4 header field identifies the upper layer protocol carried in the packet? Differentiated Services Protocol Version Identification

Protocol

Open the PT activity. Perform the tasks in the activity instructions and then answer the question.Which interfaces in each router are active and operational? R1: G0/0 and S0/0/0 R2: G0/0 and S0/0/0 R1: G0/0 and S0/0/1 R2: G0/1 and S0/0/1 R1: G0/0 and S0/0/0 R2: G0/1 and S0/0/0 R1: G0/1 and S0/0/1R2: G0/0 and S0/0/1

R1: G0/0 and S0/0/0 R2: G0/1 and S0/0/0

What information does the loopback test provide? DHCP is working correctly. The TCP/IP stack on the device is working correctly. The device has the correct IP address on the network. The Ethernet cable is working correctly. The device has end-to-end connectivity.

The TCP/IP stack on the device is working correctly.

What is the effect of using the Router# copy running-config startup-config command on a router? The contents of RAM will change. The contents of NVRAM will change. The contents of ROM will change. The contents of flash will change.

The contents of NVRAM will change.

Within a production network, what is the purpose of configuring a switch with a default gateway address? A switch must have a default gateway to be accessible by Telnet and SSH. It provides a next-hop address for all traffic that flows through the switch. The default gateway address is used to forward packets originating from the switch to remote networks. Hosts that are connected to the switch can use the switch default gateway address to forward packets to a remote destination

The default gateway address is used to forward packets originating from the switch to remote networks.

Under which two circumstances will a switch flood a frame out of every port except the port that the frame was received on? (Choose two.) The source address in the frame is a multicast address. The destination address is unknown to the switch. The source address in the frame header is the broadcast address. The frame has the broadcast address as the destination address. The destination address in the frame is a known unicast address.

The frame has the broadcast address as the destination address. The destination address is unknown to the switch.

What will happen if the default gateway address is incorrectly configured on a host? The host cannot communicate with other hosts in the local network. The host will have to use ARP to determine the correct address of the default gateway. A ping from the host to 127.0.0.1 would not be successful. The host cannot communicate with hosts in other networks. The switch will not forward packets initiated by the host.

The host cannot communicate with hosts in other networks.

The global configuration command ip default-gateway 172.16.100.1 is applied to a switch. What is the effect of this command? The switch is limited to sending and receiving frames to and from the gateway 172.16.100.1. The switch can communicate with other hosts on the 172.16.100.0 network. The switch can be remotely managed from a host on another network. The switch will have a management interface with the address 172.16.100.1.

The switch can be remotely managed from a host on another network.

Refer to the exhibit. The exhibit shows a small switched network and the contents of the MAC address table of the switch. PC1 has sent a frame addressed to PC3. What will the switch do with the frame? The switch will discard the frame. The switch will forward the frame only to ports 1 and 3. The switch will forward the frame to all ports except port 4. The switch will forward the frame to all ports. The switch will forward the frame only to port 2.

The switch will forward the frame to all ports except port 4.

How do hosts ensure that their packets are directed to the correct network destination? They search in their own local routing table for a route to the network destination address and pass this information to the default gateway. They have to keep their own local routing table that contains a route to the loopback interface, a local network route, and a remote default route.​ They send a query packet to the default gateway asking for the best route. They always direct their packets to the default gateway, which will be responsible for the packet delivery.

They have to keep their own local routing table that contains a route to the loopback interface, a local network route, and a remote default route.​

Which field in the IPv4 header is used to prevent a packet from traversing a network endlessly? Time-to-Live Differentiated Services Sequence Number Acknowledgment Number

Time-to-Live

Match the command with the device mode at which the command is entered. (Not all options are used.)

X

Match the commands to the correct actions. (Not all options are used.)

X

Match the configuration mode with the command that is available in that mode. (Not all options are used.)

X

Refer to the exhibit. Match the packets with their destination IP address to the exiting interfaces on the router. (Not all targets are used.)

X

What is a basic characteristic of the IP protocol? connectionless media dependent user data segmentation reliable end-to-end delivery

connectionless

Which term describes a field in the IPv4 packet header that contains an 8-bit binary value used to determine the priority of each packet? differentiated services source IPv4 address protocol destination IPv4 address

differentiated services

What is one advantage that the IPv6 simplified header offers over IPv4? little requirement for processing checksums smaller-sized header smaller-sized source and destination IP addresses efficient packet handling

efficient packet handling

Which two types of IPv6 messages are used in place of ARP for address resolution? echo request echo reply broadcast neighbor solicitation anycast neighbor advertisement

neighbor solicitation neighbor advertisement

Which two functions are primary functions of a router? (Choose two.) flow control microsegmentation path selection domain name resolution packet forwarding

packet forwarding path selection

Which three commands are used to set up secure access to a router through a connection to the console interface? (Choose three.) login interface fastethernet 0/0 line vty 0 4 password cisco line console 0 enable secret cisco

password cisco line console 0 login

Refer to the exhibit. PC1 attempts to connect to File_server1 and sends an ARP request to obtain a destination MAC address. Which MAC address will PC1 receive in the ARP reply? the MAC address of S1 the MAC address of the G0/0 interface on R1 the MAC address of File_server1 the MAC address of S2 the MAC address of the G0/0 interface on R2

the MAC address of the G0/0 interface on R1

What is the aim of an ARP spoofing attack? to overwhelm network hosts with ARP requests to fill switch MAC address tables with bogus addresses to flood the network with ARP reply broadcasts to associate IP addresses to the wrong MAC address

to associate IP addresses to the wrong MAC address