Checkpoint Exam: Communicating Between Networks Exam

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.

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

- login - password cisco - line console 0

What are two functions of NVRAM? (Choose 2) - to contain the running configuration file - to store the ARP table - to store the routing table - to store the startup configuration file - to retain contents when power is removed

- to retain contents when power is removed - to store the startup config file

A network administrator requires access to manage routers and switches locally and remotely. Match the following: 1. Remote access via a dialup connection 2. preferred out of band access method 3. remote access that uses encryption 4. unsecure remote connection

1. AUX 2. console 3. SSH 4. Telnet

Match the following IPs with the correct port they are connected to. 1. packets with destination of 172.17.6.15 2. packets with destination 172.17.14.8 3. packets with destination of 172.17.8.20 4. packets with destination of 172.17.10.5 5. packets with destination of 172.17.12.10

1. FastEthernet0/0 2. FastEthernet0/1 3. Serial0/0/0 4. Fast Ethernet1/1 5. FastEthernet1/0

Match the command with the device mode at which the command is entered 1. copy running-config startup-config 2. ip address 192.168.4.4 255.255.255.0 3. service password-encryption 4. enable 5. login

1. R1# 2. R1(config-if)# 3. R1(config)# 4. R1> 5. R1(config-line)#

Match the commands to the correct actions. 1. displays a message after accessing the router 2. configures the name on the router 3. provides security on the console

1. Router(config)# banner motd # 2. router(config)# hostname CL1 3. router(config-line)# password class

Match the configuration mode with the command that is available in that mode 1. R1> 2. R1(config)# 3. R1(config-line)# 4. R1#

1. enable 2. interface fastethernet 0/0 3. login 4. copy running-config startup-config

Match the phases to the functions during the process of a cisco Router: 1. phase 1 2. Phase 2 3. phrase 3

1. perform the POST and load the bootstrap program 2. locate and load the Cisco IOS software 3. locate and load the startup configuration file

A network administrator is connecting a new host to the Store LAN and 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

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

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

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.

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.​

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

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

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

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?

How to do: 1. open the PT activity on the exam 2. click on CLI for both router0 and router1 3. enable the routers 4. type show ip route 5. compare results answer should be: R1: G0/0 and S0/0/0, R2: G0/1 and S0/0/0

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

It is the IP address of the router1 interface that connects the PC1 LAN to Router1.

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

Neighbor solicitation and neighbor advertisement

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 - multiple ARP replies result in the switch MAC address table containing entries that match the MAC addresses of host that are connected to the relevant switch port. - manually configuring static ARP associations could faciliate ARP poisoning or MAC address spoofing - on large networks with low bandwidth, multiple ARP broadcasts cause data communication delays - 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?

Protocol

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

Remote routes

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

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 will happen if the default gateway address is incorrectly configured on a host?

The host cannot communicate with hosts in other networks.

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

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 is a basic characteristic of the IP protocol?

connectionless

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

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

efficient packet handling

A 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 and press enter

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

line console 0, login, password cisco

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

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 the G0/0 interface on R1

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

the contents of NVRAM will change

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

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

the lower metric value that is associated with the destination network

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 is the aim of an ARP spoofing attack?

to associate IP addresses to the wrong MAC address