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 or enter setup mode
Refer to curriculum topic: 6.3.2
When a router is powered on, it undergoes a POST to veri
Which router bootup sequence is correct??
1. IP addressing
2. Encapsulation
3. Routing
4. Deencapsulation
What are the 4 basic processes that are used in L3 to ensure the end-to-end transport of packets?
ROM
Refer to curriculum topic: 6.3.1
ROM is used to store bootup instructions, basic diagnostic software, and a copy of a limited IOS. NVRAM stores the startup configuration file. RAM provides temporary storage of the running configuration file. Flash is
During troubleshooting procedures, from which location will most Cisco routers load a limited IOS?
R1: G0/0 and S0/0/0
R2: G0/1 and S0/0/0
R1>enable
R1# show ip int brief
Interface IP-Address OK? Method Status Protocol
GigabitEthernet0/0 192.168.20.1 YES manual up up
GigabitEthernet0/1 192.168.30.1 YES manual administratively down down
Serial0/0/0 209.
Here is a link to the PT ActivityView in a new window.
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?
startup configuration
IOS image
Refer to curriculum topic: 6.3.2
A router loads the IOS image file and startup configuration file into RAM when it boots. Then the startup configuration file is copied into RAM as the running configuration file. The power-o
Which two files are loaded into RAM by the router when it boots? (Choose two.)
flash
Refer to curriculum topic: 6.3.2
The IOS image is typically stored in flash memory. If the image is not in flash memory when the router boots, the router bootstrap program can look for it on a TFTP server.
During the boot process, in what memory location will the router bootstrap program look for the IOS image if a TFTP server is not used?
to display the host routing table
Refer to curriculum topic: 6.2.1
The command netstat -r displays the host routing table to verify the routes and costs that a computer uses to communicate to certain networks.
What is the command netstat -r used for?
directing data packets to destination hosts on other networks
providing end devices with a unique network identifier
Refer to curriculum topic: 6.1.1
The network layer is primarily concerned with passing data from a source to a destination on another netw
What are two functions that are provided by the network layer? (Choose two.)
The default gateway address is used to forward packets originating from the switch to remote networks.
Refer to curriculum topic: 6.4.3
A default gateway address allows a switch to forward packets that originate on the switch to remote networks. A default
Within a production network, what is the purpose of configuring a switch with a default gateway address?
Flow Label
Refer to curriculum topic: 6.1.4
The Flow Label in IPv6 header is a 20-bit field that provides a special service for real-time applications. This field can be used to inform routers and switches to maintain the same path for the packet flow so
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?
Time-to-Live
Refer to curriculum topic: 6.1.3
When a router receives a packet, the router will decrement the Time-to-Live (TTL) field by one. When the field reaches zero, the receiving router will discard the packet and will send an ICMP Time Exceeded mes
Which value, that is contained in an IPv4 header field, is decremented by each router that receives a packet?
The MTU is passed to the network layer by the data link layer
Refer to curriculum topic: 6.1.2
The data link layer indicates to the network layer the MTU for the medium that is being used. The network layer uses that information to determine how large the
How does the network layer use the MTU value?
(Not all options are used.)
1 Examine Packet Header
2 Determine Destination Network
3 Examine Routing Table
4 Identify Exit Interface to Destination from route entry
5 Move packet to forwarding interface
A packet arrives at a router interface. The router goes through a series of steps to determine where the packet should be forwarded. Place the steps of the router forwarding process in the correct order.
gateway of last resort
Refer to curriculum topic: 6.2.2
A default static route is used as a gateway of last resort to forward unknown destination traffic to a next hop/exit interface. The next-hop or exit interface is the destination to send traffic to on
Which feature on a Cisco router permits the forwarding of traffic for which there is no specific route?
provides security on the console =
router(config-line)# Password class
displays a message when the router is accessed =
router(config)# banner motd
configures a name on the router =
router(config)# hostname CL1
Match the commands to the correct actions. (Not all options are used.)
router(config)# hostname R1
What is the router config command to specify a name for that router?
router(config-line)# Password cisco
What is the router config command to set the password on the console port to cisco?
router(config-line)# login
Once a password is set on the console, vty, or aux ports what IOS command is needed to activate the password?
router(config)# banner motd # message #
What is the router config command to display a message when the router is access?
router(config)#no ip domain-lookup
What is the IOS command to prevent typos from invoking a DNS lookup?
upper-layer connection-oriented protocols
When connectionless protocols are implemented at the lower layers of the OSI model, what are usually used to acknowledge the data receipt and request the retransmission of missing data?
Any host or user can get a public IPv6 network address because the number of available IPv6 addresses is extremely large.?
Why is NAT not needed in IPv6??
differentiated services
Which IPv4 header field is responsible for defining the priority of the packet??
when the full IOS cannot be found
When would the Cisco IOS image held in ROM be used to boot the router?
ARP cache
routing table
A technician is configuring a router that is actively running on the network. Suddenly, power to the router is lost. If the technician has not saved the configuration, which two types of information will be lost? (Choose two.)
ROM
Fill in the blank. In a router,________ is the nonvolatile memory where the diagnostic software, the bootup instructions, and a limited IOS are stored.
It informs network devices to maintain the same path for real-time application packets.
What is a service provided by the Flow Label field of the IPv6 header?
line console 0
password cisco
login
Which three commands are used to set up a password for a person who attaches a cable to a new router so that an initial configuration can be performed?
show ip interface brief
Which command displays a summary chart of all router interfaces, their IP addresses, and their current operational status?
route print
netstat -r
Which two commands can be used on a Windows host to display the routing table?
The packet will be sent directly to the destination host.
A computer has to send a packet to a destination host in the same LAN. How will the packet be sent?
A configured and activated router interface must be connected to another device in order to operate.
After a router interface has been configured and activate what else is needed in order for the interface to operate?
the default gateway address
A technician is manually configuring a computer with the necessary IP parameters to communicate over the corporate network. The computer already has an IP address, a subnet mask, and a DNS server. What else has to be configured for Internet access?
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.?
How do hosts ensure that their packets are directed to the correct network destination?
IOS image file
Startup configuration
Which two files, if found, are copied into RAM as a router with the default configuration register setting boots up?
WAN interfaces
LAN interfaces
Which two interfaces will allow access via the VTY lines to configure the router?
switch the packet to the directly connected interface
During the process of forwarding traffic, what will the router do immediately after matching the destination IP address to a network on a directly connected routing table entry?
copy running-config startup-config
After troubleshooting a router, the network administrator wants to save the router configuration so that it will be used automatically the next time that the router reboots. What command should be issued?