WorksheetsNetworking Worksheet: Switching, Subnetting, and STP
Total questions: 41
Worksheet time: 28mins
You have a network with a subnet of 172.16.17.0/22. Which are valid host addresses?
172.16.20.1
172.16.17.1
172.16.18.255
Your router has the following IP address on Ethernet0: 172.16.112.1/20. How many hosts can be accommodated on the Ethernet segment?
2046
4096
4094
You have a /27 subnet mask. Which of the following are valid hosts? (Choose three.)
143.187.16.56
192.168.15.87
11.244.18.63
Which of the following is a layer 2 protocol used to maintain a loop-free network?
STP
VTP
You have 10 hosts plus a server connected to a switch. Each device is running 10Mbps half-duplex. What is the bandwidth available for each device when it communicates to the server?
100Mbps
10Mbps
What is the result of segmenting a network with a bridge (switch)? (Choose two options.)
It makes smaller collision domains.
It increases the number of broadcast domains.
What will occur if two Cisco LAN switches are connected with a single crossover cable?
The switch port link lights will flash amber, indicating an error.
The switch port link lights will be green, indicating normal operation.
You want to ensure that only the server can connect to port fa0/1 on your Catalyst switch. What can you do to ensure that only the MAC address of the server is allowed by switch port fa0/1? (Choose two.)
Configure the MAC address of the server as a static entry associated with port fa0/1.
Configure port security on fa0/1 to reject traffic with a source MAC address other than that of the server.
Which statement describes a spanning-tree network that has converged?
Your network design emphasizes efficient, error-free transport instead of fast transport. Which switching mode should be configured on the new switches to provide error-free transport to the network?
What are the three distinct functions of layer 2 switching that increase available bandwidth on the network? (Choose three.)
Loop avoidance
Address learning
Forwarding and filtering
You are working on a network design and determine that a new testing application requires multiple hosts that must be capable of sharing data between each host and server running 10Mbps. Other departments use applications that require less than 3Mbps to the server. What should you recommend?
Use a switch with a 100Mbps uplink to the server and 10Mbps to the hosts.
Replace the 10Mbps Ethernet hub with a 100Mbps Ethernet hub.
Use a bridge to break up collision domains.
What technology is used by Catalyst switches to resolve topology loops and ensure that data flows properly through a single network path?
STP
IGRP
Store-and-forward
Which of the following statements is true?
A switch creates separate collision domains and separate broadcast domains. A router provides separate collision domains.
A switch creates a single collision domain and a single broadcast domain. A router creates a single collision domain.
A switch creates separate collision domains but one broadcast domain.
Which of the following is true regarding layer 2 switches? (Choose two.)
A switch is a multiport bridge.
Switches learn MAC addresses by examining the source address of each frame.
Judging by the outputs below, which switch device would be the spanning-tree root bridge? Outputs show spanning-tree summaries with Root ID priorities: Vail Priority 32768, Breckenridge Priority 16384, Keystone Priority 8192, CopperMtn Priority 4096.
Vail
CopperMtn
Keystone
Breckenridge
If Host A wants to send a packet to Host B, which destination address will be in the data frame when it just leaves Host A? Topology shows: Host A IP 172.168.10.99/26 MAC AA:AA:AA:AA:AA:AA; Router R2 IP 172.168.10.65/26 MAC BB:BB:BB:BB:BB:BB; Router R1 IP 172.168.11.65/26 MAC CC:CC:CC:CC:CC:CC; Host B IP 172.168.11.88/26 MAC DD:DD:DD:DD:DD:DD; inter-router link 172.168.10.129/30–172.168.10.130/30.
172.168.10.130
BB:BB:BB:BB:BB:BB
AA:AA:AA:AA:AA:AA
172.168.11.65
If Host A wants to send a packet to Host B, what will the destination IP address be in the packet when it leaves Host A? Diagram shows Host A 172.168.10.99/26 (MAC AA...), Router R2 172.168.10.65/26 (MAC BB...), Router R1 172.168.11.65/26 (MAC CC...), Host B 172.168.11.88/26 (MAC DD...).
172.168.11.65
AA:AA:AA:AA:AA:AA
CC:CC:CC:CC:CC:CC
172.168.11.88
If Host A wants to send a packet to Host B, what will the source address be in the frame when it leaves Router R1? Diagram shows Host A 172.168.10.99/26 (MAC AA...), Router R2 172.168.10.65/26 (MAC BB...), Router R1 172.168.11.65/26 (MAC CC...), Host B 172.168.11.88/26 (MAC DD...).
172.168.10.130
172.168.11.65
BB:BB:BB:BB:BB:BB
CC:CC:CC:CC:CC:CC
What need to configure on a host can help communicate with hosts in other networks.
DNS
Subnetmask
IP
The default gateway
A user is attempting to access http://www.cisco.com/ without success. Which two configuration values must be set on the host to allow this access? Choose two.
The default gateway
Source MAC and Destination MAC
DNS Server
PC Sales cannot connect to ServerA in Marketing. Which is the wrong IP?
192.168.1.86
192.168.1.81
192.168.1.41
192.168.1.87
If host B wants to send a packet to host A, what will the destination IP address be in the packet when it leaves host B?
172.168.11.88
172.168.10.130
172.168.10.99
If host A wants to send a packet to host B, what will the destination address be in the frame when it leaves Router R1?
BB:BB:BB:BB:BB:BB
172.168.10.130
172.168.11.88
If host A wants to send a packet to host B, what is the gateway in host A?
172.168.10.129
172.168.10.65
172.168.11.65
If host B wants to send a packet to host A, what is the gateway in host B?
172.168.10.65
172.168.11.65
172.168.10.129
Network 206.143.5.0 was assigned to the Acme Company to connect to its ISP. The administrator of Acme would like to configure one router with the commands to access the Internet. Which commands could be configured on the Gateway router to allow Internet access to the entire network? Choose two.
Gateway(config)#router rip
Gateway(config)#ip default-network 206.143.5.0
Gateway(config)#ip route 0.0.0.0 0.0.0.0 206.143.5.2
What command is used to stop RIP routing updates from exiting out an interface but still receive RIP route updates?
Router(config-router)#passive-interface s0
Router(config-if)#passive-interface
Host_A wants to send data to the HTTPS server as shown in the graphic. What is the gateway in HostA? Choose two.
The IP address of RouterA's Fa0/0 interface
The IP address of RouterA's Fa0/1 interface
Which of the following statements are true regarding the command ip route 172.16.4.0 255.255.255.0 192.168.4.2? Choose two.
The command is used to establish a static route.
The command is used to configure the default route.
What is split horizon?
Which command displays RIP routing updates?
show protocols
show ip route
debug ip route
debug ip rip
What does RIPv2 use to prevent routing loops? (Choose two.)
Holddown timers
Classless masking
Authentication
CIDR
Split horizon
A network administrator views the output from the show ip route command. A network that is advertised by both RIP and IGRP appears in the routing table flagged as an IGRP route. Why is the RIP route to this network not used in the routing table?
The IGRP route has fewer hops.
RIP has a higher metric value for that route.
IGRP has a lower administrative distance.
IGRP has a faster update timer.
The RIP path has a routing loop.
You type debug ip rip on your router console and see that 172.16.10.0 is being advertised to you with a metric of 16. What does this mean?
The route is inaccessible.
The route is 16 hops away.
The route has a delay of 16 microseconds.
The route is queued at 16 messages a second.
IGRP uses which of the following as default parameters for finding the best path to a remote network? (Choose two.)
STP
Path bandwidth value
Hop count
Cumulative interface delay
MTU
The corporate router receives an IP packet with a source IP address of 192.168.214.20 and a destination address of 192.168.22.3. Looking at the following output from the Corporate router, what will the router do with this packet? Corp#sh ip route [output cut] R 192.168.215.0 [120/2] via 192.168.20.2, 00:00:23, Serial0/0 R 192.168.115.0 [120/1] via 192.168.20.2, 00:00:23, Serial0/0 R 192.168.30.0 [120/1] via 192.168.20.2, 00:00:23, Serial0/0 C 192.168.20.0 is directly connected, Serial0/0 C 192.168.214.0 is directly connected, FastEthernet0/0
The router will broadcast looking for the destination.
The packets will be routed out the S0/0 interface.
The packets will be routed out the Fa0/0 interface.
The packets will be discarded.
If your routing table has a static, a RIP, and an IGRP route to the same network, which route will be used to route packets by default?
RIP route
They will all load-balance.
IGRP route
Static route
Any available route
You have the following routing table. Which of the following networks will not be placed in the neighbor routing table? R 192.168.30.0/24 [120/1] via 192.168.40.1, 00:00:12, Serial0 C 192.168.40.0/24 is directly connected, Serial0 172.16.0.0/24 is subnetted, 1 subnets C 172.16.30.0 is directly connected, Loopback0 R 192.168.20.0/24 [120/1] via 192.168.40.1, 00:00:12, Serial0 R 10.0.0.0/8 [120/15] via 192.168.40.1, 00:00:07, Serial0 C 192.168.50.0/24 is directly connected, Ethernet0
192.168.30.0
10.0.0.0
All of them will be placed in the neighbor routing table.
172.16.30.0
Two connected routers are configured with RIP routing. What will be the result when a router receives a routing update that contains a higher-cost path to a network already in its routing table?
The updated information will replace the existing routing table entry.
The update will be ignored and no further action will occur.
The existing routing table entry will be deleted from the routing table and all routers will exchange routing updates to reach convergence.
The updated information will be added to the existing routing table.
What is route poisoning?
It prevents regular update messages from reinstating a route that has just come up.
It describes when a router sets the metric for a downed link to infinity.
It is information received from a router that can't be sent back to the originating router.
It sends back the protocol received from a router as a poison pill, which stops the regular updates.
