ITN 8-10

Refer to the exhibit. A network administrator is connecting a new host to the Store LAN. The host needs to communicate with remote networks. What IP address would be configured as the default gateway on the new host? 172.19.98.230

HQ(config)# interface gi0/1 HQ(config-if)# description Connects to the Branch LAN HQ(config-if)# ip address 172.19.99.99 255.255.255.0 HQ(config-if)# no shutdown HQ(config-if)# interface gi0/0 HQ(config-if)# description Connects to the Store LAN HQ(config-if)# ip address 172.19.98.230 255.255.255.0 HQ(config-if)# no shutdown HQ(config-if)# interface s0/0/0 HQ(config-if)# description Connects to the ISP HQ(config-if)# ip address 10.98.99.254 255.255.255.0 HQ(config-if)# no shutdown HQ(config-if)# interface s0/0/1 HQ(config-if)# description Connects to the Head Office WAN HQ(config-if)# ip address 209.165.200.120 255.255.255.0 HQ(config-if)# no shutdown HQ(config-if)# end

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

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?

Which term describes a field in the IPv4 packet header used to limit the lifetime of a packet?

TTL

FastEthernet1/0

Refer to the exhibit. Match the packets with their destination IP address to the exiting interfaces on the router. (Not all targets are used.) Packets with destination 172.17.12.10

the MAC address of the G0/0 interface on R1

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?

Router(config-line)# password class

provides security on the console

SSH

remote access method that uses encryption

AUX

remote access via a dialup connection

What routing table entry has a next hop address associated with a destination network?

remote routes

R1(config)#

service password-encryption

A network technician issues the arp -d * command on a PC after the router that is connected to the LAN is reconfigured. What is the result after this command is issued?

The ARP cache is cleared.

Why is NAT not needed in IPv6?​

Any host or user can get a public IPv6 network address because the number of available IPv6 addresses is extremely large.​

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?

Exit privileged EXEC mode & press ENTER

Which destination address is used in an ARP request frame?

FFFF.FFFF.FFFF

When transporting data from real-time applications, such as streaming audio and video, which field in the IPv6 header can be used to inform the routers and switches to maintain the same path for the packets in the same conversation?

Flow Label

Which statement describes a feature of the IP protocol?

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

What are two potential network problems that can result from ARP operation? (Choose two.)

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.

Match the phases to the functions during the boot up process of a Cisco router: perform POST & load the startup configuration file

Phase 1

Match the phases to the functions during the boot up process of a Cisco router: locate & load the Cisco IOS software

Phase 2

What information does the loopback test provide?

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

A computer can access devices on the same network but cannot access devices on other networks. What is the probable cause of this problem?

The computer has an invalid default gateway address.

A router boots and enters setup mode. What is the reason for this?

The configuration file is missing from NVRAM.

Within a production network, what is the purpose of configuring a switch with a default gateway address?

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

What property of ARP causes the request to be flooded out all ports of a switch except for the port receiving the ARP request?

The destination MAC address FF-FF-FF-FF-FF-FF appears in the header of the Ethernet frame.

What property of ARP forces all Ethernet NICs to process an ARP request?

The destination MAC address FF-FF-FF-FF-FF-FF appears in the header of the Ethernet frame.

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 frame has the broadcast address as the destination address. The destination address is unknown to the switch. The source address in the frame header is the broadcast address. The source address in the frame is a multicast 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 hosts in other networks.

What property of ARP causes a reply only to the source sending an ARP request?

The source MAC address appears in the header of the Ethernet frame.

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 can be remotely managed from a host on another network.

What property of ARP causes the NICs receiving an ARP request to pass the data portion of the Ethernet frame to the ARP process?

The type field 0x806 appears in the header of the Ethernet frame.

Which statement describes the treatment of ARP requests on the local link?

They are received and processed by every device on the local network.

How do hosts ensure that their packets are directed to the correct network destination?

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

Which term describes a field in the IPv4 packet header that contains a unicast, multicast, or broadcast address?

destination IPv4 address

What important information is examined in the Ethernet frame header by a Layer 2 device in order to forward the data onward?

destination MAC address

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

Router(config)# banner motd #

displays a message when the router is accessed

What is one advantage that the IPv6 simplified header offers over IPv4?

efficient packet handling

R1>

enable

Which term describes a field in the IPv4 packet header used to detect corruption in the IPv4 header?

header checksum

Match config mode with command: R1(config)#

interface fastethernet 0/0

R1(config-if)#

ip address 192.168.4.4 255.255.255.0

Which parameter does the router use to choose the path to the destination when there are multiple routes available?

the lower metric value that is associated with the destination network

What is the aim of an ARP spoofing attack?

to associate IP addresses to the wrong MAC address

What are two functions of NVRAM?

to retain contents when power is removed to store the startup configuration file

Telnet

unsecure remote access

Which term describes a field in the IPv4 packet header that contains a 4-bit binary value set to 0100?

version

Where are IPv4 address to Layer 2 Ethernet address mappings maintained on a host computer?

ARP cache

What IPv4 header field identifies the upper layer protocol carried in the packet?

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: G0/1 and S0/0/0

Refer to the exhibit. A network administrator is connecting a new host to the Payroll LAN. The host needs to communicate with remote networks. What IP address would be configured as the default gateway on the new host? 10.27.14.148

RTR1(config)# interface gi0/1 RTR1(config-if)# description Connects to the Marketing LAN RTR1(config-if)# ip address 10.27.15.17 255.255.255.0 RTR1(config-if)# no shutdown RTR1(config-if)# interface gi0/0 RTR1(config-if)# description Connects to the Payroll LAN RTR1(config-if)# ip address 10.27.14.148 255.255.255.0 RTR1(config-if)# no shutdown RTR1(config-if)# interface s0/0/0 RTR1(config-if)# description Connects to the ISP RTR1(config-if)# ip address 10.14.15.254 255.255.255.0 RTR1(config-if)# no shutdown RTR1(config-if)# interface s0/0/1 RTR1(config-if)# description Connects to the Head Office WAN RTR1(config-if)# ip address 203.0.113.39 255.255.255.0 RTR1(config-if)# no shutdown RTR1(config-if)# end

172.20.0.254

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?

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

Refer to the exhibit. Consider the IP address configuration shown from PC1. What is a description of the default gateway address?

FastEthernet1/1

Refer to the exhibit. Match the packets with their destination IP address to the exiting interfaces on the router. (Not all targets are used.) Packets with destination 172.17.10.5

FastEthernet0/1

Refer to the exhibit. Match the packets with their destination IP address to the exiting interfaces on the router. (Not all targets are used.) Packets with destination 172.17.14.8

FastEthernet0/0

Refer to the exhibit. Match the packets with their destination IP address to the exiting interfaces on the router. (Not all targets are used.) Packets with destination 172.17.6.15

Serial0/0/0

Refer to the exhibit. Match the packets with their destination IP address to the exiting interfaces on the router. (Not all targets are used.) Packets with destination 172.17.8.20

Which three commands are used to set up secure access to a router through a connection to the console interface?

line console 0 login password Cisco

R1(config-line)#

login

Which two types of IPv6 messages are used in place of ARP for address resolution?

neighbor solicitation neighbor advertisement

Which two functions are primary functions of a router?

packet forwarding path selection

Console

preferred out-of-band access method

Which term describes a field in the IPv4 packet header used to identify the next level protocol?

protocol

What are two services provided by the OSI network layer? (Choose two.) performing error detection routing packets toward the destination encapsulating PDUs from the transport layer placement of frames on the media collision detection

routing packets toward the destination encapsulating PDUs from the transport layer

What property of ARP allows MAC addresses of frequently used servers to be fixed in the ARP table?

A static IP-to-MAC address entry can be entered manually into an ARP table.

What statement describes the function of the Address Resolution Protocol?

ARP is used to discover the MAC address of any host on the local network.

Refer to the exhibit. A network administrator is connecting a new host to the Medical LAN. The host needs to communicate with remote networks. What IP address would be configured as the default gateway on the new host? 192.168.191.189

BldgA(config)# interface gi0/1 BldgA(config-if)# description Connects to the Medical LAN BldgA(config-if)# ip address 192.168.191.189 255.255.255.0 BldgA(config-if)# no shutdown BldgA(config-if)# interface gi0/0 BldgA(config-if)# description Connects to the Client LAN BldgA(config-if)# ip address 192.168.190.70 255.255.255.0 BldgA(config-if)# no shutdown BldgA(config-if)# interface s0/0/0 BldgA(config-if)# description Connects to the ISP BldgA(config-if)# ip address 10.190.191.254 255.255.255.0 BldgA(config-if)# no shutdown BldgA(config-if)# interface s0/0/1 BldgA(config-if)# description Connects to the Head Office WAN BldgA(config-if)# ip address 198.51.100.213 255.255.255.0 BldgA(config-if)# no shutdown BldgA(config-if)# end

Refer to the exhibit. A network administrator is connecting a new host to the Medical LAN. The host needs to communicate with remote networks. What IP address would be configured as the default gateway on the new host? 192.168.201.200

BldgA(config)# interface gi0/1 BldgA(config-if)# description Connects to the Medical LAN BldgA(config-if)# ip address 192.168.201.200 255.255.255.0 BldgA(config-if)# no shutdown BldgA(config-if)# interface gi0/0 BldgA(config-if)# description Connects to the Client LAN BldgA(config-if)# ip address 192.168.200.80 255.255.255.0 BldgA(config-if)# no shutdown BldgA(config-if)# interface s0/0/0 BldgA(config-if)# description Connects to the ISP BldgA(config-if)# ip address 10.200.201.254 255.255.255.0 BldgA(config-if)# no shutdown BldgA(config-if)# interface s0/0/1 BldgA(config-if)# description Connects to the Head Office WAN BldgA(config-if)# ip address 203.0.113.222 255.255.255.0 BldgA(config-if)# no shutdown BldgA(config-if)# end

What happens when the transport input ssh command is entered on the switch vty lines?

Communication between the switch and remote users is encrypted.

What property of ARP causes cached IP-to-MAC mappings to remain in memory longer?

Entries in an ARP table are time-stamped and are purged after the timeout expires.

Match the phases to the functions during the boot up process of a Cisco router: locate & load the startup configuration file

Phase 3

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? 10.118.62.196

Floor(config)# interface gi0/1 Floor(config-if)# description Connects to the Registrar LAN Floor(config-if)# ip address 10.118.63.65 255.255.255.0 Floor(config-if)# no shutdown Floor(config-if)# interface gi0/0 Floor(config-if)# description Connects to the Manager LAN Floor(config-if)# ip address 10.118.62.196 255.255.255.0 Floor(config-if)# no shutdown Floor(config-if)# interface s0/0/0 Floor(config-if)# description Connects to the ISP Floor(config-if)# ip address 10.62.63.254 255.255.255.0 Floor(config-if)# no shutdown Floor(config-if)# interface s0/0/1 Floor(config-if)# description Connects to the Head Office WAN Floor(config-if)# ip address 209.165.200.87 255.255.255.0 Floor(config-if)# no shutdown Floor(config-if)# end

Refer to the exhibit. A network administrator is connecting a new host to the Registrar LAN. The host needs to communicate with remote networks. What IP address would be configured as the default gateway on the new host? 192.168.225.223

Floor(config)# interface gi0/1 Floor(config-if)# description Connects to the Registrar LAN Floor(config-if)# ip address 192.168.225.223 255.255.255.0 Floor(config-if)# no shutdown Floor(config-if)# interface gi0/0 Floor(config-if)# description Connects to the Manager LAN Floor(config-if)# ip address 192.168.224.103 255.255.255.0 Floor(config-if)# no shutdown Floor(config-if)# interface s0/0/0 Floor(config-if)# description Connects to the ISP Floor(config-if)# ip address 10.224.225.254 255.255.255.0 Floor(config-if)# no shutdown Floor(config-if)# interface s0/0/1 Floor(config-if)# description Connects to the Head Office WAN Floor(config-if)# ip address 203.0.113.246 255.255.255.0 Floor(config-if)# no shutdown Floor(config-if)# end

Refer to the exhibit. A network administrator is connecting a new host to the Registrar LAN. The host needs to communicate with remote networks. What IP address would be configured as the default gateway on the new host? 192.168.235.234

Floor(config)# interface gi0/1 Floor(config-if)# description Connects to the Registrar LAN Floor(config-if)# ip address 192.168.235.234 255.255.255.0 Floor(config-if)# no shutdown Floor(config-if)# interface gi0/0 Floor(config-if)# description Connects to the Manager LAN Floor(config-if)# ip address 192.168.234.114 255.255.255.0 Floor(config-if)# no shutdown Floor(config-if)# interface s0/0/0 Floor(config-if)# description Connects to the ISP Floor(config-if)# ip address 10.234.235.254 255.255.255.0 Floor(config-if)# no shutdown Floor(config-if)# interface s0/0/1 Floor(config-if)# description Connects to the Head Office WAN Floor(config-if)# ip address 203.0.113.3 255.255.255.0 Floor(config-if)# no shutdown Floor(config-if)# end

Refer to the exhibit. A network administrator is connecting a new host to the Store LAN. The host needs to communicate with remote networks. What IP address would be configured as the default gateway on the new host? 172.20.132.13

HQ(config)# interface gi0/1 HQ(config-if)# description Connects to the Branch LAN HQ(config-if)# ip address 172.20.133.132 255.255.255.0 HQ(config-if)# no shutdown HQ(config-if)# interface gi0/0 HQ(config-if)# description Connects to the Store LAN HQ(config-if)# ip address 172.20.132.13 255.255.255.0 HQ(config-if)# no shutdown HQ(config-if)# interface s0/0/0 HQ(config-if)# description Connects to the ISP HQ(config-if)# ip address 10.132.133.254 255.255.255.0 HQ(config-if)# no shutdown HQ(config-if)# interface s0/0/1 HQ(config-if)# description Connects to the Head Office WAN HQ(config-if)# ip address 198.51.100.156 255.255.255.0 HQ(config-if)# no shutdown HQ(config-if)# end

What property of ARP allows hosts on a LAN to send traffic to remote networks?

Local hosts learn the MAC address of the default gateway.

Refer to the exhibit. A network administrator is connecting a new host to the Service LAN. The host needs to communicate with remote networks. What IP address would be configured as the default gateway on the new host? 192.168.167.166

Main(config)# interface gi0/1 Main(config-if)# description Connects to the Service LAN Main(config-if)# ip address 192.168.167.166 255.255.255.0 Main(config-if)# no shutdown Main(config-if)# interface gi0/0 Main(config-if)# description Connects to the Engineering LAN Main(config-if)# ip address 192.168.166.46 255.255.255.0 Main(config-if)# no shutdown Main(config-if)# interface s0/0/0 Main(config-if)# description Connects to the ISP Main(config-if)# ip address 10.166.167.254 255.255.255.0 Main(config-if)# no shutdown Main(config-if)# interface s0/0/1 Main(config-if)# description Connects to the Head Office WAN Main(config-if)# ip address 198.51.100.189 255.255.255.0 Main(config-if)# no shutdown Main(config-if)# end

Refer to the exhibit. A network administrator is connecting a new host to the Service LAN. The host needs to communicate with remote networks. What IP address would be configured as the default gateway on the new host? 172.29.157.156

Main(config)# interface gi0/1 Main(config-if)# description Connects to the Service LAN Main(config-if)# ip address 172.29.157.156 255.255.255.0 Main(config-if)# no shutdown Main(config-if)# interface gi0/0 Main(config-if)# description Connects to the Engineering LAN Main(config-if)# ip address 172.29.156.36 255.255.255.0 Main(config-if)# no shutdown Main(config-if)# interface s0/0/0 Main(config-if)# description Connects to the ISP Main(config-if)# ip address 10.156.157.254 255.255.255.0 Main(config-if)# no shutdown Main(config-if)# interface s0/0/1 Main(config-if)# description Connects to the Head Office WAN Main(config-if)# ip address 198.51.100.177 255.255.255.0 Main(config-if)# no shutdown Main(config-if)# end

Router(config)# hostname CL1

configures a name on the router

What is a basic characteristic of the IP protocol?

connectionless

R1#

copy running-config startup-config

Which term describes a field in the IPv4 packet header that contains a 32-bit binary value associated with an interface on the sending device?

source IPv4 address

What is the effect of using the Router# copy running-config startup-config command on a router?

the contents of NVRAM will change