CCNA 1 Chapter 6 Studyguide
A computer has to send a packet to a destination host in the same LAN. How will the packet be sent?
The packet will be sent directly to the destination host
Open the PT Activity. Perform the tasks in the activity instructions and then answer the questions or complete the task. Does the router have enough RAM and flash memory to support the new IOS?
The router has enough RAM and flash memory for the IOS upgrade.
Which IPv4 header field is responsible for defining the priority of the packet? traffic class flow label flags differentiated services
differentiated services
What is purpose of the startup configuration file on Cisco router? -to facilitate the basic operation of the hardware components of a device. -to contain the commands that are used to initially configure a router on startup -to contain the configuration commands that the router IOS is currently using -to provide a limited backup version of the IOS, in case the router cannot load the full featured IOS
to contain the commands that are used to initially configure a router on startup
Refer to the exhibit. Which route from the PC1 routing table will be used to reach PC2?
Network Destination: 192.168.10.0 Netmask: 255.255.255.0 Gateway: On-Link Interface: 192.168.10.10 Metric: 281
Refer to the exhibit. Fill in the blank A packet leaving PC-1 has to traverse __________ hops to reach PC-4. PC 1 and PC2 are connected to SW 1-SW 1 is connected to Router 1, Router 1 is connected to Router 2, Router 2 is connected to Router 3, Router 3 is connected to SW 2-SW 2 is connected to PC3 and PC4
3
When would the Cisco IOS image held in ROM be used to boot the router?
when the full IOS cannot be found
Which statement about router interfaces is true? Commands that apply an IP address and subnet mask to an interface are entered in global configuration mode. Once the no shutdown command is given, a router interface is active and operational. Router LAN interfaces are not activated by default, but router WAN interfaces are. A configured and activated router interface must be connected to another device in order to operate
A configured and activated router interface must be connected to another device in order to operate.
Which two pieces of information are in the RAM of a Cisco router during normal operation? (Choose two.) -Cisco IOS -backup IOS file -IP routing table -basic diagnostic software -startup configuration file
Cisco IOS IP routing table
Which field in the IPv4 header is used to prevent a packet from traversing a network endlessly -Time-To-Live -Sequence Number -Acknowledgment Number -Differentiated Services
Time-To-Live
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? copy startup-config flash copy running-config flash reload copy startup-config running-config copy running-config startup config
copy running-config startup-config
What are two characteristics of IP? (Choose Two) -does not require a dedicated end-to-end connection -operates independently of the network media -retransmits packets if errors occur -re-assembles out of order packers into the correct order at the receiver end -guarantees delivery of packets
does not require a dedicated end-to-end connection operates independently of the network media
What is one advantage that the IPv6 simplified header offers over IPv4? -smaller-sized header -little requirement for processing checksums -smaller-sized source and destination IP addresses -efficient packet handling
efficient packet handling
Match field names to the IP header where they would be found. (Not all options are used.) IPv4 Header Flags Length/Type Total Length Traffic Class Flow Label
Flags Total Length
Match the command with the device mode at which the command is entered. (Not all options are used.) enable
R1>
Refer to the exhibit. R1 Receives a packet destined for the IP address 192.168.2.10. Out which interface will R1 foward the packet?
Serial 0/0/1
Which characteristic of the network layer in the OSI model allows carrying packets for multiple types of communications among many hosts?
The ability to operate without regard to the data that is carried in each packet
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? Transport layer UDP protocols upper-layer connection-oriented protocols connectionless acknowledgements Network layer IP protocols
upper-layer connection-oriented protocols
Match the command with the device mode at which the command is entered. (Not all options are used.) copy running-config startup-config
R1#
What is a service provided by the Flow Label field of the IPv6 header?
It informs network devices to maintain the same path for real-time application packets.
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.) routing table ARP cache Cisco IOS image file startup configuration bootstrap file
routing table ARP cache
Which command displays a summary chart of all router interfaces, their IP address, and their current operational status?
show ip interface brief
Which two files, if found, are copied into RAM as a router with the default configuration register setting boots up (Choose Two) -POST diagnostics -running configuration -startup configuration -IOS image file
startup configuration IOS image file
Which three commands are used to set up secure access to a router through a connection to the console interface? (Choose three.) -interface fastethernet 0/0 -line vty 0-4 -line console 0 -enable secret cisco -login -password cisco
-line console 0 -login -password cisco
What type of route is indicated by the code C in an IPv4 routing table on a Cisco router? -static route -default route -directly connected route -dynamic route tat is learned through EIGRP
directly connected route
Which type of static route that is configured on a router uses only the exit interface?
directly connected static route
Why is NAT not needed in IPv6? Any host or user can get a public IPv6 address because the number of available addresses is extremely large The end-to-end connectivity problems that are caused by NAT are solved because the number of routes increases with the number of nodes that are connected to the internet. Because IPv6 has integrated security, there is no need to hide the IPv6 addresses of internal networks. The problems that are induced by NAT applications are solved because the IPv6 header improves packet handling by intermediate routers.
Any host or user can get a public IPv6 network address because the number of available addresses is extremely large.
Refer to the exhibit. Match the packets with their destination IP address to the exiting interfaces on the router packets with the destination of 172.17.6.15? <output omitted> Gateway of last resort is 0.0.0.0 to network 0.0.0.0 10.0.0/24 is subnetted, 1 subnets C 10.1.0.0 is directly connected, Serial 0/0/0 172.17.0.0/24 is subnetted, 4 subnets 0 172.17.6.0 [110/2] via 192.168.3.4, 00:10:41, FastEthernet 0/0 0 172.17.10.0 [110/2] via 192.168.5.2, 00:09:52, FastEthernet 1/1 0 172.17.12.0 [110/12]via 192.168.4.2, 00:12:23, FastEthernet 1/0 C 172.17.14.0 is directly connected, FastEthernet 0/1 C 192.168.3.0/24 is directly connected, FastEthernet 0/0 C 192.168.4.0/24 is directly connected, FastEthernet 1/0 C 192.168.5.0/24 is directly connected FastEthernet 1/1 S* 0.0.0.0/0 is directly connected, Serial 0/0/0
FastEthernet 0/0
Refer to the exhibit. Match the packets with their destination IP address to the exiting interfaces on the router packets with the destination of 172.17.12.10? <output omitted> Gateway of last resort is 0.0.0.0 to network 0.0.0.0 10.0.0/24 is subnetted, 1 subnets C 10.1.0.0 is directly connected, Serial 0/0/0 172.17.0.0/24 is subnetted, 4 subnets 0 172.17.6.0 [110/2] via 192.168.3.4, 00:10:41, FastEthernet 0/0 0 172.17.10.0 [110/2] via 192.168.5.2, 00:09:52, FastEthernet 1/1 0 172.17.12.0 [110/12]via 192.168.4.2, 00:12:23, FastEthernet 1/0 C 172.17.14.0 is directly connected, FastEthernet 0/1 C 192.168.3.0/24 is directly connected, FastEthernet 0/0 C 192.168.4.0/24 is directly connected, FastEthernet 1/0 C 192.168.5.0/24 is directly connected FastEthernet 1/1 S* 0.0.0.0/0 is directly connected, Serial 0/0/0
FastEthernet 1/0
Refer to the exhibit. Match the packets with their destination IP address to the exiting interfaces on the router packets with the destination of 172.17.10.5? <output omitted> Gateway of last resort is 0.0.0.0 to network 0.0.0.0 10.0.0/24 is subnetted, 1 subnets C 10.1.0.0 is directly connected, Serial 0/0/0 172.17.0.0/24 is subnetted, 4 subnets 0 172.17.6.0 [110/2] via 192.168.3.4, 00:10:41, FastEthernet 0/0 0 172.17.10.0 [110/2] via 192.168.5.2, 00:09:52, FastEthernet 1/1 0 172.17.12.0 [110/12]via 192.168.4.2, 00:12:23, FastEthernet 1/0 C 172.17.14.0 is directly connected, FastEthernet 0/1 C 192.168.3.0/24 is directly connected, FastEthernet 0/0 C 192.168.4.0/24 is directly connected, FastEthernet 1/0 C 192.168.5.0/24 is directly connected FastEthernet 1/1 S* 0.0.0.0/0 is directly connected, Serial 0/0/0
FastEthernet 1/1
Refer to the exhibit. Match the packets with their destination IP address to the exiting interfaces on the router packets with the destination of 172.17.14.8? <output omitted> Gateway of last resort is 0.0.0.0 to network 0.0.0.0 10.0.0/24 is subnetted, 1 subnets C 10.1.0.0 is directly connected, Serial 0/0/0 172.17.0.0/24 is subnetted, 4 subnets 0 172.17.6.0 [110/2] via 192.168.3.4, 00:10:41, FastEthernet 0/0 0 172.17.10.0 [110/2] via 192.168.5.2, 00:09:52, FastEthernet 1/1 0 172.17.12.0 [110/12]via 192.168.4.2, 00:12:23, FastEthernet 1/0 C 172.17.14.0 is directly connected, FastEthernet 0/1 C 192.168.3.0/24 is directly connected, FastEthernet 0/0 C 192.168.4.0/24 is directly connected, FastEthernet 1/0 C 192.168.5.0/24 is directly connected FastEthernet 1/1 S* 0.0.0.0/0 is directly connected, Serial 0/0/0
FastEthernet0/1
Which statement describes a hardware feature of a Cisco 1941 router that has the default hardware configuration? -It does not have an AUX port. -It has three FastEthernet interfaces for LAN access. -It has two types of ports that can be used to access the console. -It does not require a CPU because it relies on Compact Flash to run the iOS
It has two types of ports that can be used to access the console.
What are two types of router interfaces? (Choose two) -SVI -LAN -DHCP -Telnet -WAN
LAN WAN
Following default settings, what is the next step in the router boot sequence after the iOS loads from flash? -Perform the POST routine. -Locate and load the startup-config file from NVRAM -Load the bootstrap program from ROM. -Load the running-config file from RAM.
Locate and load the startup-config file from NVRAM
What IPv4 header field identifies the upper layer protocol carried in the packet? -Protocol -Identification -Version -Differentiated Services
Protocol
Match the command with the device mode at which the command is entered. (Not all options are used.) service password encryption
R1(config)#
Match the command with the device mode at which the command is entered. (Not all options are used.) ip address 192.168.4.4 255.255.255.0
R1(config-if)#
Match the command with the device mode at which the command is entered. (Not all options are used.) login
R1(config-line)#
Fill in the blank In a router, ___________ is the nonvolatile memory where the diagnostic software, the bootup instructions, and a limited IOS are stored.
ROM
Open the PT Activity. The enable password on all devices is cisco. Perform the tasks in the activity instructions and then answer the question. For what reason is the failure occurring?
SW 1 does not have a default gateway
Refer to the exhibit. Match the packets with their destination IP address to the exiting interfaces on the router packets with the destination of 172.17.8.20? <output omitted> Gateway of last resort is 0.0.0.0 to network 0.0.0.0 10.0.0/24 is subnetted, 1 subnets C 10.1.0.0 is directly connected, Serial 0/0/0 172.17.0.0/24 is subnetted, 4 subnets 0 172.17.6.0 [110/2] via 192.168.3.4, 00:10:41, FastEthernet 0/0 0 172.17.10.0 [110/2] via 192.168.5.2, 00:09:52, FastEthernet 1/1 0 172.17.12.0 [110/12]via 192.168.4.2, 00:12:23, FastEthernet 1/0 C 172.17.14.0 is directly connected, FastEthernet 0/1 C 192.168.3.0/24 is directly connected, FastEthernet 0/0 C 192.168.4.0/24 is directly connected, FastEthernet 1/0 C 192.168.5.0/24 is directly connected FastEthernet 1/1 S* 0.0.0.0/0 is directly connected, Serial 0/0/0
Serial 0/0/0
Which characteristic describes an IPv6 enhancement over IPv4? -IPv6 addresses are based on 128-bit flat addressing as opposed to IPv4 which is based on 32-bit hierarchical addressing. -The IPv6 header is simpler than the IPv4 header is, which improves packet handling. -Both IPv4 and IPv6 support authentication, but only IPv6 supports privacy capabilities. -The IPv6 address space is four times bigger than the IPv4 address space.
The IPv6 header is simpler than the IPv4 header is, which improves packet handling.
A router boots and enters setup mode. What is the reason for this? -The IOS image is corrupt. -Cisco IOS is missing from flash memory. -The configuration file is missing from NVRAM -The POST process has detected hardware failure.
The configuration file is missing from NVRAM.
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.
Match field names to the IP header where they would be found. (Not all options are used.) IPv6 Header Flags Length/Type Total Length Traffic Class Flow Label
Traffic Class Flow Label
When a connectionless protocol is in use at a lower layer of the OSI model, how is missing data detected and retransmitted if necessary?
Upper-layer connection-oriented protocols keep track of the data received and can request retransmission from teh upper-level protocols on the sending host.
Which two interfaces will allow access via the VTY lines to configure the router? (Choose two) console interfaces USB interfaces WAN interfaces LAN interfaces Aux interfaces
WAN interfaces LAN interfaces
What routing table entry has a next hop address associated with a destination network? -directly-connected routes -local routes -remote routes -C and L source routes
remote routes
Which two commands can be used on a Windows host to display the routing table? (choose two) netstat -s route print netstat -r tracert show ip route
route print netstat -r
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?
switch the packet to the directly connected interface
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? the default gateway address the MAC address the domain name of the organization the WINS server address
the default gateway address
