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CCENT ICND1 > Exam 100-105 > Flashcards

Exam 100-105 Flashcards

1
Q

What are the characteristics of a network ID as against an IP address?

A

Identifies the network the host device belongs to

Used by routers to maintain information about routes

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2
Q

What is the result of issuing the command “no service password-encryption” on a Cisco IOS router?

A

All future passwords will be stored as plain text in the running configuration

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3
Q

You are troubleshooting an interface issue on your Cisco IOS ISR. The output of “show ip interface brief” indicates that Ethernet0/0 is down, down.
What are the possible reasons for this?

A

There is no cable attached to Ethernet0/0
The device at the other end of the cable is powered off
The interface on the device at the other end of the cable is shutdown

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4
Q

Which statements correctly define ACLs?

A

They are used as a classification tool

They are made up of various permit and deny entries

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5
Q

You have the Class B network 172.16.0.0/16 and want to create 16 subnets.
What will the new subnet mask be for the 16 subnets?

A

/21

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6
Q

You have the Class B network 172.16.0.0/16 and want to create 16 subnets.
What will the new subnet mask be for the 16 subnets?

A

/20

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7
Q

You need to verify the MAC address of Ethernet0/0 on your Cisco IOS ISR.
Which command will display the MAC address?

A

show interfaces Ethernet0/0

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8
Q

You need to verify which interfaces have been enabled for port security and the security action that will be taken if a violation occurs.
Which show command will provide this information?

A

show port-security interface

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9
Q

Which of the following protocols are used to auto negotiate trunk formation between two switches?

A

DTP

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10
Q

At which phase of the DHCP process will a DHCP server provide the client with an IP address, subnet mask, and default gateway?

A

Offer

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11
Q

You want to verify the Cisco IOS software version, ROM version, amount of memory, type of processor, number and types of interfaces, as well as the configuration register value on your 2900 series IOS router. What command will allow you to accomplish this?

A

Show version

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12
Q

You need to prevent your router from receiving and processing RIPv2 routing updates.
How can you accomplish this?

A

Create an ACL denying UDP port 520 packets and apply it inbound on the interface

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13
Q

What is the purpose of InterVLAN routing?

A

To transport packets from one VLAN to another VLAN

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14
Q

The IPv6 address “2001:db8:abc:1234:0290:27ff:fe17:fc0f/64” is assigned to a device.
How was the interface portion assigned?

A

Dynamically, using EUI-64

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15
Q

Which device is responsible for translating the private IPv4 address to a public IPv4 address when using static NAT?

A

Router

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16
Q

You have connected to your Cisco IOS router using SSH for remote management. You have entered the command “debug ip rip” to verify that RIP updates are being sent and received by the router. You wait for 90 seconds and notice that no RIP updates are being sent or received. After reviewing the RIP configuration, you conclude that the configuration is fine. You also verify that logging to the vty lines is set to debugging.
Why are you not seeing the RIP updates?

A

You need to issue the terminal monitor command

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17
Q

You are implementing a VLSM network. You are using the Class A network of 10.0.0.0/8 and need to create networks that support 254 hosts that will be used for each LAN. The tenth network that was created will be used for addressing all the point-to-point links between routers at HQ, all the point-to-point WAN links, and any point-to-point links in the branch offices.
What is the subnet ID of the second point-to-point network created?

A

10.0.9.4/30

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18
Q

Which layer in the hierarchical Cisco Enterprise Campus Architecture is used to provide end users with connectivity to the network?

A

Access

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19
Q

You need to verify which interfaces have been enabled for port security and the security action that will be taken if a violation occurs.
Which show command will provide this information?

A

show port-security

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20
Q

You are configuring RIPv2 on your Cisco IOS router.

Which command and configuration mode is used to enable the RIP routing process on an interface?

A

R1(config-router)#network network_id

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21
Q

What is the purpose of a trunk between to switches?

A

To pass traffic for multiple VLANs on a single physical link

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22
Q

Where is the Cisco IOS stored on a Cisco IOS ISR Router?

A

Flash

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23
Q

When no explicit path is found in the routing table to forward a packet, what optional entry can be used in the routing table to forward the packet?

A

a default route

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24
Q

If you take the network 192.168.1.0/24 and subnet it to four /26 networks, what is the usable address range in the third subnet?

A

192.168.1.129 to 192.168.1.190

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25
Q

What are the benefits of implementing IPv6?

A

Transition richness
Larger address space
Simpler header
Security and mobility

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26
Q

You need to apply an access-list to the vty lines on your router so that you can control which users can make telnet and ssh connections to the device.
Which command in line vty configuration mode will apply the access-list to the vty lines?

A

access-class access-list-number in

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27
Q

What are the results of subnetting a large Class A network?

A

Support more networks as compared to the original Class A network
Support fewer devices in each network as compared to the original Class A network

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28
Q

You are configuring dynamic NAT on your Cisco IOS router that is connected to your ISP. What would be used to define the private IPv4 addresses that can be translated to public IPv4 addresses?

A

An access list
An IP NAT pool
The ip nat inside command

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29
Q

Which command is used to ensure that R2 advertises 203.0.113.0/29 to R1 instead of 203.0.113.0/24 to R1?

A

no auto-summary

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30
Q

Which protocol is used to discover directly connected Cisco IOS devices?

A

CDP

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31
Q

Which command is used to display the open ports on a router so that you can determine which services should be disabled?

A

show control-plane host open-ports

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32
Q

Which of the following should be considered when implementing VLANs?

A

VLAN 1 is the default VLAN
The maximum number of VLANs is switch dependent
The Native VLAN should be changed

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33
Q

What is the maximum stratum level for NTP?

A

15

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34
Q

Which options are available for obtaining a license file?

A

Cisco License Manager

Cisco License Registration Portal

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35
Q

You are configuring static NAT on a Cisco IOS router that is connected to your ISP. You goal is to have the private IP of 10.1.1.10 translated to 203.0.113.5. Which command must be issued on the interface connected to the service provider?

A

ip nat outside

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36
Q

Which commands will successfully create VLAN 5 and name it SALES on a Catalyst IOS switch?

A

Switch(config)#vlan 5

Switch(config-vlan)#name SALES

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37
Q

You are implementing IPv6 stateless address autoconfiguration for your end stations.
What must be the prefix of the IPv6 network in order for the clients to autoconfigure their addresses?

A

/64

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38
Q

Which command is used to create a standard numbered IPv4 ACL?

A

access-list

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39
Q

Which IPv6 prefix is used by the typical LAN for IPv6 networks?

A

/64

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40
Q

What command will successfully change the configuration register so that a Cisco IOS 2900 series router will boot into ROM Monitor mode?

A

Config-register 0x2100

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41
Q

When using NAT to translate private IPv4 addresses to public IPv4 addresses, what term is used to identify the private IPv4 address?

A

inside local

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42
Q

When the Cisco IOS image is located during boot, where is it loaded?

A

RAM

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43
Q

Your router has learned about the network 172.17.8.0/24 from EIGRP and OSPF.
What information will the router populate the routing table with?

A

The EIGRP information because it has the lower administrative distance

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44
Q

Which command is used to determine the licenses that are activated on your ISR?

A

show license

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45
Q

Why should you implement port security on a switch interface?

A

To control which devices are allowed to access the network

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46
Q

Which statement correctly defines an anycast IPv6 address?

A

Used in one-to-nearest communication

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47
Q

What are the two main functions of a router?

A

Determine the optimal path to forward packets and store the decision in a routing table
Forward packets based on entries in a routing table

48
Q

What occurs when you enable the passive interface feature on a router interface that is running RIPv2?

A

It suppresses the sending of routing updates out the interface

49
Q

You have implemented stateless address autoconfiguration in your local area network.
What will the end stations use as their default gateway address?

A

The link-local address of the router’s interface

50
Q

What protocol is used to synchronize time between various Cisco IOS devices in your network?

A

NTP

51
Q

Which UTP cable category introduced 1Gbps throughput?

A

5e

52
Q

Which of the following protocols are used to auto negotiate trunk formation between two switches?

A

DTP

53
Q

What will the solicited node multicast address be for the IPv6 address 2001:DB8:1001:F:2C0:10FF:FE17:FC0F?

A

FF02:0000:0000:0000:0000:0001:FF17:FC0F

54
Q

Which command can you use to encrypt all current and future plain-text passwords that are stored in the running configuration?

A

service password-encryption

55
Q

Which statement is true about the subnet masks /12, /20, and /28?

A

They all have the same block size of 16

56
Q

Which command will assign a static global IPv6 address to an interface?

A

ipv6 address 2001::12:1/64

57
Q

Which option is a valid representation of the IPv6 address 2001:0db8:010F:0001:0000:0000:0000:0ACD?

A

2001:db8:10F:1::ACD

58
Q

What is the destination MAC address of a broadcast frame?

A

ff:ff:ff:ff:ff:ff

59
Q

What does a 2900 ISR do if the POST is successful during start up, but there is no configuration file to load?

A

It initiates the system configuration dialog

60
Q

You are currently building a network diagram. You need to add the model number of the local device you are connected to in the diagram.
Which command will provide you with the model number of the local Cisco IOS device?

A

show version

61
Q

Which statements define dynamic NAT when used for private to public translations?

A

Dynamic NAT only translates private addresses matching an ACL to public addresses that are defined in a NAT pool

62
Q

Which command is used to disable the active technology package for a license?

A

license boot module

63
Q

Which command is used to enable port security on an interface?

A

switchport port-security

64
Q

Which command and mode will successfully configure a hostname of R1 on a Cisco IOS router?

A

Router(config)#hostname R1

65
Q

What will occur when you issue the “copy running-config startup-config” command on your IOS device?

A

The configuration in RAM will replace the configuration in NVRAM

66
Q

You have an ACL entry that has the address of 192.168.101.0 and the wildcard mask of 0.0.0.255.
What is the range of IPv4 addresses that will be affected by this ACL?

A

192.168.101.0 through 192.168.101.255

67
Q

Which of the following dynamic routing protocols are Distance Vector routing protocols?

A

EIGRP

RIP

68
Q

Which port number is used by SSHv2?

A

22

69
Q

Which command will assign a static link-local address to an interface?

A

ipv6 address fe80::12:1 link-local

70
Q

Which command is used to disable CDP on an interface?

A

no cdp enable

71
Q

Which dynamic routing protocol uses cost as its metric?

A

OSPF

72
Q

When a wildcard mask is presented in binary, what do the zeros (0) indicate?

A

Match the corresponding bit in the IP address

73
Q

Your Cisco IOS router is acting as a DHCP server.

Which command will display the addresses that have been handed out to clients on the LAN?

A

show ip dhcp bindings

74
Q

The configuration register on your Cisco IOS 2900 series router is set to 0x2101. How will the router choose the IOS image during the boot process?

A

The first image located in flash will be booted

75
Q

When a subnet mask is presented in binary, what do the binary 1s represent?

A

The network portion of an associated address

76
Q

You need to determine the VLAN ID that will be placed in a frame as it exits your Cisco IOS ISR interface of GigabitEthernet 0/0.20. Which command will you use?

A

Show vlans

77
Q

Which commands will disable DTP on an interface?

A

Switchport mode access

Switchport nonegotiate

78
Q

Which statements best describe the role of a router?

A

Routers use a routing table to forward packets

Routers are used to connect hosts that are in different local area networks

79
Q

What is the purpose of subnetting?

A

To take a single network and divide it into multiple smaller networks

80
Q

Which IPv6 prefix will the typical enterprise network receive from the service provider?

A

/48

81
Q

What is the default subnet mask for a Class B address?

A

255.255.0.0

82
Q

You are setting up a Cisco IOS router as a DHCP server.

Which command is used to identify the IPv4 address that is used as the default gateway for the LAN?

A

default-router

83
Q

You have a Class A network with a /27 subnet mask.

How many hosts can be addressed in that network?

A

30

84
Q

You need to create an ACL entry that will only permit all addresses in the 10.1.1.16/28 network.
Which address and wildcard mask combination will accomplish this for us?

A

10.1.1.16 0.0.0.15

85
Q

What is the interface portion of an IPv6 address that is using EUI-64 if the interface MAC address is 00A1-6789-ABCD?

A

02A1:67FF:FE89:ABCD

86
Q

Which is the customer side of the demarcation point?

A

CPE (customer provided equipment)

87
Q

You need to back up the Cisco IOS image for your 2900 ISR.

Which command can be used to verify the size of the IOS image that you will be backing up?

A

show flash

88
Q

Where is the start-up configuration file stored and loaded from by default on a Cisco IOS router?

A

NVRAM

89
Q

Which type of unicast address is automatically configured on all interfaces that are enabled for IPv6?

A

link-local

90
Q

What is the wildcard mask equivalent of the subnet mask /23?

A

0.0.1.255

91
Q

Which command can be used to prevent syslog messages from interrupting the commands that you are currently typing in?

A

logging synchronous

92
Q

Which command will you use to verify that an IPv4 address has been applied to an interface in the correct direction?

A

show ip interface

93
Q

You are looking at the MAC address 00:00:0c:43:2e:08.

Which hexadecimal values in the MAC address represent the vendor-assigned portion of the MAC address?

A

43:2e:08

94
Q

You have a Class C address with a subnet mask of /28.

How many bits were borrowed from the host portion of the address?

A

Four

95
Q

Which microcode is used to test the basic functionality of router hardware and determine which components are present?

A

POST

96
Q

What is the default security violation mode for port security on a Cisco 2960 Catalyst switch?

A

Shutdown

97
Q

Which route type in the routing table identifies the networks that are attached to the local router?

A

Directly connected route

98
Q

Which component is used to hold the critical electronic components of a router?

A

Motherboard

99
Q

You need to create a standard IPv4 ACL entry that will deny all packets sourced from the Class C private IP address space.
Which of these options is the correct ACL entry?

A

access-list 10 deny 192.168.0.0 0.0.0.255

100
Q

Which command will assign a global IPv6 address with an autoconfigured interface portion to a router interface?

A

ipv6 address 2001:db8:1:1::/64

101
Q

You need to back up the Cisco IOS image of your Catalyst switch to a tftp server.
Where is the Cisco IOS image stored?

A

Flash

102
Q

If you take the network 192.168.1.0/24 and create four subnets from it, what are the new subnet IDs?

A
  1. 168.1.0
  2. 168.1.192
  3. 168.1.64
  4. 168.1.128
103
Q

Which dynamic routing protocols are examples of link-state routing protocols?

A

OSPF

IS-IS

104
Q

You are implementing a VLSM network. You are using the Class B network of 172.16.0.0/16 and need to create 256 networks from this. The fifth network will then be subnetted into /30 networks.
What is the subnet ID of the fourth /30 network?

A

172.16.4.12/30

105
Q

What is the default inactivity timer in minutes for the Console port on a Cisco IOS 2900 ISR?

A

10

106
Q

You are troubleshooting a DHCP issue for VLAN 10 in your branch office. You need to verify the IPv4 addresses that are part of the DHCP pool.
Which command will accomplish this for you?

A

show ip dhcp pool

107
Q

What is required for a directly connected route to be added to the routing table?

A

Configure an IP address on the interface

The interface Status must be up and the Protocol must be up

108
Q

Which address and wildcard mask combination will match all IPv4 addresses in the networks 192.168.0.0/24 through 192.168.63.0/24?

A

192.168.0.0 0.0.63.255

109
Q

How many default vty lines exist on a Cisco IOS router?

A

5

110
Q

Which command is used to set your Cisco IOS device as an authoritative time source that will be used as the trusted time source?

A

ntp master

111
Q

How does the static default route appear in the routing table for IPv6?

A

::/0

112
Q

You are configuring RIP on your Cisco IOS router.

Which configuration command will successfully enable RIPv2?

A

R1(config)#router rip

R1(config-router)#version 2

113
Q

What is the correct order for the DHCP process?

A

Discover, Offer, Request, Acknowledge

114
Q

You are currently using PAT to translate private IPv4 addresses to the public IPv4 address of your router interface. Users complain that on occasion Internet connections fail. You determine that these failures are a result of PAT running out of port numbers for unique translations. What should you do to resolve this issue?

A

Obtain another public IPv4 address from your ISP and use both IPv4 addresses in a NAT pool that PAT will use for overloading

115
Q

You need to create a standard IPv4 ACL entry that will deny all packets sourced from the Class C private IP address space.
Which of these options is the correct ACL entry?

A

access-list 10 deny 192.168.0.0 0.0.255.255

116
Q

Which command will assign a global IPv6 address with an autoconfigured interface portion to a router interface?

A

ipv6 address 2001:db8:1:1::/64 eui-64

CCENT ICND1 (2 decks)

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