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R&R Basics- CH 4 & 5 Exam

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R&R Basics- CH 4 & 5 Exam
Anthony Schulmeister
Quiz by Anthony Schulmeister, updated more than 1 year ago
Anthony Schulmeister
Created by Anthony Schulmeister about 9 years ago
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Resource summary

Question 1

Question
Consider the following routing table entry for R1: D 10.1.1.0/24 [90/2170112] via 209.165.200.226, 00:00:05, Serial0/0/0 What is the significance of the Serial0/0/0?
Answer
  • It is the interface on the next-hop router when the destination IP address is on the 10.1.1.0/24 network.
  • It is the interface on R1 used to send data that is destined for 10.1.1.0/24.
  • It is the interface on the final destination router that is directly connected to the 10.1.1.0/24 network.
  • It is the R1 interface through which the EIGRP update was learned

Question 2

Question
What are two common types of static routes in routing tables? (Choose two)
Answer
  • a built-in static route by IOS
  • a static route shared between two neighboring routers
  • a static route converted from a route that is learned through a dynamic routing protocol
  • a static route to a specific network
  • a default static route

Question 3

Question
What two pieces of information are displayed in the output of the show ip interface brief command? (Choose two.)
Answer
  • Layer 1 statuses
  • interface descriptions
  • IP addresses
  • MAC addresses
  • speed and duplex settings
  • next-hop addresses

Question 4

Question
Which two items are used by a host device when performing an ANDing operation to determine if a destination address is on the same local network? (Choose two.)
Answer
  • destination MAC address
  • destination IP address
  • source MAC address
  • network number
  • subnet mask

Question 5

Question
Refer to the exhibit. A network administrator issues the show ipv6 route command on R1. What two conclusions can be drawn from the routing table? (Choose two.)
Image:
af01cef6-568b-43ee-b8c3-94fa8bdbee15 (image/png)
Answer
  • The interface Fa0/1 is configured with IPv6 address 2001:DB8:ACAD:A::12.
  • Packets that are destined for the network 2001:DB8:ACAD:2::/64 will be forwarded through Fa0/1.
  • Packets that are destined for the network 2001:DB8:ACAD:2::54/128 will be forwarded through Fa0/0.
  • R1 does not know a route to any remote networks
  • The network FF00::/8 is installed through a static route command.

Question 6

Question
What route would have the lowest administrative distance?
Answer
  • a directly connected network
  • a route received through the EIGRP routing protocol
  • a static route
  • a route received through the OSPF routing protocol

Question 7

Question
When a router receives a packet, it examines the destination address of the packet and looks in the [blank_start]routing[blank_end] table to determine the best path to use to forward the packet.
Answer
  • routing

Question 8

Question
Refer to the exhibit. PC A sends a request to Server B. What IPv4 address is used in the destination field in the packet as the packet leaves PC A?
Image:
b10c2c97-858b-4c32-ad94-1be822988426 (image/jpeg)
Answer
  • 192.168.11.1
  • 192.168.12.16
  • 192.168.10.1
  • 192.168.10.10

Question 9

Question
What are two functions of a router? (Choose two.)
Answer
  • It determines the best path to send packets.
  • It increases the size of the broadcast domain.
  • It connects multiple IP networks
  • It manages the VLAN database
  • It controls the flow of data via the use of Layer 2 addresses

Question 10

Question
Refer to the exhibit. What will the router do with a packet that has a destination IP address of 192.168.12.227?
Image:
acad1ee3-6521-4dae-a71c-a69131d4d6a6 (image/jpeg)
Answer
  • Send the packet out the GigabitEthernet0/1 interface.
  • Send the packet out the Serial0/0/0 interface
  • Drop the packet.
  • Send the packet out the GigabitEthernet0/0 interface.

Question 11

Question
Which statement describes a route that has been learned dynamically?
Answer
  • It is automatically updated and maintained by routing protocols.
  • It has an administrative distance of 1.
  • It is unaffected by changes in the topology of the network
  • It is identified by the prefix C in the routing table.

Question 12

Question
Refer to the exhibit. A network administrator has configured R1 as shown. When the administrator checks the status of the serial interface, the interface is shown as being administratively down. What additional command must be entered on the serial interface of R1 to bring the interface up?
Image:
f5daa3b9-bfb3-4ea5-97f5-89ed5dac0dbc (image/jpeg)
Answer
  • no shutdown
  • end
  • IPv6 enable
  • clockrate 128000

Question 13

Question
A network administrator configures a router by the command ip route 0.0.0.0 0.0.0.0 209.165.200.226. What is the purpose of this command?
Answer
  • to forward packets destined for the network 0.0.0.0 to the device with IP address 209.165.200.226
  • to add a dynamic route for the destination network 0.0.0.0 to the routing table
  • to forward all packets to the device with IP address 209.165.200.226
  • to provide a route to forward packets for which there is no route in the routing table

Question 14

Question
Refer to the exhibit. If PC1 is sending a packet to PC2 and routing has been configured between the two routers, what will R1 do with the Ethernet frame header attached by PC1?
Image:
ae9959c2-1213-40e3-b232-13ec9fd0f21b (image/png)
Answer
  • open the header and replace the destination MAC address with a new one
  • open the header and use it to determine whether the data is to be sent out S0/0/0
  • remove the Ethernet header and configure a new Layer 2 header before sending it out S0/0/0
  • nothing, because the router has a route to the destination network

Question 15

Question
Which software is used for a network administrator to make the initial router configuration securely?
Answer
  • HTTPS client software
  • Telnet client software
  • SSH client software
  • terminal emulation client software

Question 16

Question
In order for packets to be sent to a remote destination, what three pieces of information must be configured on a host? (Choose three.)
Answer
  • IP address
  • subnet mask
  • default gateway
  • DHCP server address
  • DNS server address

Question 17

Question
What command will enable a router to begin sending messages that allow it to configure a link-local address without using an IPv6 DHCP server?
Answer
  • the ipv6 route ::/0 command
  • the ip routing command
  • a static route
  • the ipv6 unicast-routing command

Question 18

Question
A packet moves from a host on one network to a device on a remote network within the same company. If NAT is not performed on the packet, which two items remain unchanged during the transfer of the packet from source to destination? (Choose two.)
Answer
  • destination MAC address
  • source MAC address
  • Layer 2 header
  • source IP address
  • destination IP address
  • source ARP table

Question 19

Question
What is a characteristic of an IPv4 loopback interface on a Cisco IOS router?
Answer
  • It is assigned to a physical port and can be connected to other devices.
  • Only one loopback interface can be enabled on a router.
  • The no shutdown command is required to place this interface in an UP state.
  • It is a logical interface internal to the router.

Question 20

Question
Refer to the exhibit. What does R1 use as the MAC address of the destination when constructing the frame that will go from R1 to Server B?
Image:
ccd7707c-84d3-44e4-ade6-f22d4375f6e0 (image/jpeg)
Answer
  • R1 uses the destination MAC address of S1.
  • If the destination MAC address that corresponds to the IPv4 address is not in the ARP cache, R1 sends an ARP request.
  • R1 leaves the field blank and forwards the data to the PC.
  • The packet is encapsulated into a PPP frame, and R1 adds the PPP destination address to the frame.

Question 21

Question
A network administrator configures the interface fa0/0 on the router R1 with the command ip address 172.16.1.254 255.255.255.0. However, when the administrator issues the command show ip route, the routing table does not show the directly connected network. What is the possible cause of the problem?
Answer
  • The subnet mask is incorrect for the IPv4 address.
  • The configuration needs to be saved first.
  • No packets with a destination network of 172.16.1.0 have been sent to R1.
  • The interface fa0/0 has not been activated.

Question 22

Question
Which two statements correctly describe the concepts of administrative distance and metric? (Choose two.)
Answer
  • Administrative distance refers to the trustworthiness of a particular route.
  • The value of the administrative distance can not be altered by the network administrator.
  • The metric is always determined based on hop count.
  • A router first installs routes with higher administrative distances.
  • The metric varies depending which Layer 3 protocol is being routed, such as IP
  • Routes with the smallest metric to a destination indicate the best path.

Question 23

Question
Which two parameters are used by EIGRP as metrics to select the best path to reach a network? (Choose two.)
Answer
  • resiliency
  • delay
  • hop count
  • confidentiality
  • jitter
  • bandwidth

Question 24

Question
What is a disadvantage of using router-on-a-stick inter-VLAN routing?
Answer
  • does not support VLAN-tagged packets
  • requires the use of multiple router interfaces configured to operate as access links
  • does not scale well beyond 50 VLANs
  • requires the use of more physical interfaces than legacy inter-VLAN routing

Question 25

Question
How are IP addressing designs affected by VLAN implementations?
Answer
  • Each VLAN must have a different subnet mask.
  • VLANs do not use a broadcast address.
  • Each VLAN must have a different network number.
  • VLANs do not support VLSM.

Question 26

Question
Refer to the exhibit. In this network design, which connection or connections if any, add the VLAN ID number if host H1 sends information to host H2?
Image:
9ab2c438-f4f4-4f2e-9f1f-0fe0c876a07f (image/png)
Answer
  • from the switch to H2
  • from the switch to G0/0 on the router
  • from G0/1 on the router to G1/2 on the switch
  • from H1 to the switch
  • no link

Question 27

Question
What is a characteristic of legacy inter-VLAN routing?
Answer
  • Inter-VLAN routing must be performed on a switch instead of a router.
  • The router requires one Ethernet link for each VLAN
  • Only one VLAN can be used in the topology.
  • The user VLAN must be the same ID number as the management VLAN.

Question 28

Question
Refer to the exhibit. A network administrator needs to configure router-on-a-stick for the networks that are shown. How many subinterfaces will have to be created on the router if each VLAN that is shown is to be routed and each VLAN has its own subinterface?
Answer
  • 1
  • 3
  • 2
  • 5
  • 4

Question 29

Question
Refer to the exhibit. What is the problem with this configuration, based on the output of the router?
Image:
3a6d33e1-d3e4-4650-8b9e-fdb766963e5f (image/png)
Answer
  • The subnet mask is wrong.
  • The subinterface number does not match the third octet in the IPv4 address.
  • There is no subinterface for the administrative VLAN.
  • The encapsulation has not been configured on the subinterface.

Question 30

Question
What condition is required to enable Layer 3 switching?
Answer
  • All routed subnets must be on the same VLAN.
  • The Layer 3 switch must have IP routing enabled.
  • Inter-VLAN portions of Layer 3 switching must use router-on-a-stick.
  • All participating switches must have unique VLAN numbers.

Question 31

Question
Refer to the exhibit. Communication between the VLANs is not occurring. What could be the issue?
Answer
  • The wrong port on the router has been used.
  • A duplex issue exists between the switch and the router.
  • The Gi1/1 switch port is not in trunking mode.
  • Default gateways have not been configured for each VLAN.

Question 32

Question
Refer to the exhibit. A network administrator is verifying the configuration of inter-VLAN routing. Users complain that PCs on different VLANs cannot communicate. Based on the output, what are two configuration errors on switch interface Gi1/1? (Choose two.)
Image:
677d8d3c-1392-4417-9d64-ee8440a03df1 (image/png)
Answer
  • Gi1/1 is in the default VLAN.
  • Gi1/1 is configured as trunk mode.
  • The trunking encapsulation protocol is configured wrong.
  • Voice VLAN is not assigned to Gi1/1.
  • Negotiation of trunking is turned on on Gi1/1

Question 33

Question
Refer to the exhibit. A network administrator is verifying the configuration of inter-VLAN routing. Users complain that PC2 cannot communicate with PC1. Based on the output, what is the possible cause of the problem?
Image:
00408b67-79dc-4a42-92b8-ed7bed599187 (image/png)
Answer
  • The encapsulation dot1Q 5 command contains the wrong VLAN.
  • Gi0/0 is not configured as a trunk port.
  • The command interface GigabitEthernet0/0.5 was entered incorrectly.
  • The no shutdown command is not entered on subinterfaces.
  • There is no IP address configured on the interface Gi0/0.

Question 34

Question
Refer to the exhibit. A network administrator is verifying the configuration of inter-VLAN routing. Based on the partial output that is displayed by the use of the show vlan command, which conclusion can be drawn for the Gi1/1 interface?
Image:
fabf2b88-d016-4504-b2d3-88e8aff6ed3f (image/png)
Answer
  • It is shut down.
  • It is configured as trunk mode.
  • It belongs to the default VLAN.
  • It is not connected to any device.

Question 35

Question
Inter-VLAN communication is not occurring in a particular building of a school. Which two commands could the network administrator use to verify that inter-VLAN communication was working properly between a router and a Layer 2 switch when the router-on-a-stick design method is implemented? (Choose two.)
Answer
  • From the switch, issue the show interfaces interface command.
  • From the switch, issue the show interfaces trunk command.
  • From the router, issue the show interfaces trunk command.
  • From the router, issue the show interfaces interface command.
  • From the router, issue the show ip route command.

Question 36

Question
What is a characteristic of a routed port on a Layer 3 switch?
Answer
  • It cannot have an IP address assigned to it.
  • It supports trunking.
  • It is commonly used as a WAN link.
  • It is not assigned to a VLAN.

Question 37

Question
While configuring inter-VLAN routing on a multilayer switch, a network administrator issues the no switchport command on an interface that is connected to another switch. What is the purpose of this command?
Answer
  • to create a routed port for a single network
  • to create a switched virtual interface
  • to provide an access link that tags VLAN traffic
  • to provide a static trunk link

Question 38

Question
What is a disadvantage of using multilayer switches for inter-VLAN routing?
Answer
  • Multilayer switches are limited to using trunk links for Layer 3 routing.
  • Spanning tree must be disabled in order to implement routing on a multilayer switch.
  • Multilayer switches have higher latency for Layer 3 routing.
  • Multilayer switches are more expensive than router-on-a-stick implementations.

Question 39

Question
How is traffic routed between multiple VLANs on a multilayer switch?
Answer
  • Traffic is routed via physical interfaces.
  • Traffic is routed via internal VLAN interfaces.
  • Traffic is broadcast out all physical interfaces.
  • Traffic is routed via subinterfaces.

Question 40

Question
An administrator is attempting to configure a static route on a Cisco 2960 series switch. After the administrator types the command ip route 0.0.0.0 0.0.0.0 10.1.1.1, an error message appears stating that the command is not recognized. What must the administrator do so that this command is accepted?
Answer
  • Enter the command ip route 0.0.0.0 0.0.0.0. vlan 10.
  • Enter the command ipv6 unicast-routing.
  • Enter the command sdm prefer lanbase-routing and reload.
  • Enter the command no switchport.

Question 41

Question
Refer to the exhibit. Router RA receives a packet with a source address of 192.168.1.35 and a destination address of 192.168.1.85. What will the router do with this packet?
Image:
15731409-26eb-4aff-b5fa-4b64099aa510 (image/png)
Answer
  • The router will drop the packet.
  • The router will forward the packet out interface FastEthernet 0/1.3.
  • The router will forward the packet out interface FastEthernet 0/1.2.
  • The router will forward the packet out interface FastEthernet 0/1.2 and interface FastEthernet 0/1.3.
  • The router will forward the packet out interface FastEthernet 0/1.1.

Question 42

Question
Refer to the exhibit. After attempting to enter the configuration that is shown in router RTA, an administrator receives an error and users on VLAN 20 report that they are unable to reach users on VLAN 30. What is causing the problem?
Image:
0629bdff-89ca-4fda-affb-8ce85852fdfb (image/png)
Answer
  • The no shutdown command should have been issued on Fa0/0.20 and Fa0/0.30.
  • There is no address on Fa0/0 to use as a default gateway.
  • RTA is using the same subnet for VLAN 20 and VLAN 30.
  • Dot1q does not support subinterfaces.

Question 43

Question
Refer to the exhibit. A network administrator is configuring RT1 for inter-VLAN routing. The switch is configured correctly and is functional. Host1, Host2, and Host3 cannot communicate with each other. Based on the router configuration, what is causing the problem?
Image:
79519958-53bf-4f32-8b88-e62cf0aea8de (image/png)
Answer
  • Routers do not support 802.1Q encapsulation on subinterfaces.
  • IP addresses on the subinterfaces are incorrectly matched to the VLANs.
  • Each subinterface of Fa0/0 needs separate no shutdown commands.
  • Interface Fa0/0 is missing IP address configuration information.

Question 44

Question
Refer to the exhibit. In what switch mode should port G0/1 be assigned if Cisco best practices are being used?
Image:
e5cc0a89-7945-4a38-99bc-19f67f7a444d (image/png)
Answer
  • native
  • auto
  • access
  • trunk

Question 45

Question
Refer to the exhibit. Which command can the administrator issue to change the VLAN10 status to up?
Image:
124f06fb-9191-4ab6-952e-c34a47662c0d (image/png)
Answer
  • Switch1(config)# interface vlan 10 Switch1(config-if)# ip address 192.168.10.1 255.255.255.0 Switch1(config-if)# no shutdown
  • Switch1(config)# interface vlan 10 Switch1(config-if)# no shutdown
  • Switch1(config)# vlan 10 Switch1(config-vlan)# exit
  • Switch1(config)# interface vlan 10 Switch1(config-if)# ip address 192.168.10.1 255.255.255.0

Question 46

Question
A network engineer is troubleshooting the configuration of new VLANs on a network. Which command is used to display the list of VLANs that exists on the switch? [blank_start]show vlan[blank_end]
Answer
  • show vlan

Question 47

Question
Which statement describes a disadvantage of using router subinterfaces for inter-VLAN routing?
Answer
  • All untagged traffic is dropped
  • Routed traffic must contend for bandwidth on a single router interface.
  • It is more expensive than using individual router interfaces.
  • Trunking cannot be used to connect the router to the switch.
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