Routers test II

In modern networks, what is the only EGP protocol used?

BGP

Which of the following is considered to be an Exterior Gateway Protocol (EGP)?

BGP

What is the process of removing the Layer 2 header and trailer information to reveal the Layer 3 packet?

Deencapsulation

What VLAN(s) should devices in the IP subnet be in?

Devices in a single VLAN should be in the same IP subnet. Devices in different VLANs should be in separate IP subnets.

What is the name of the algorithm OSPF uses to find the best suitable paths from each OSPF router?

Dijkstra's algorithm

What does the network OSPF router configuration command specify?

Interfaces on which OSPF will run

Which correctly defines the meaning of VLSM?

The use of more than one mask in a single classful network

When is the SPF algorithm for a link state protocol run?

Topology change-a link comes up or down

Which Cisco IOS command is used on a router that is being configured with a ROAS configuration to manage traffic from a specific VLAN?

encapsulation dot1q vlan-id

Which Cisco IOS command is used on a router that is being configured with a ROAS configuration to manage untagged traffic?

encapsulation dot1q vlan-id native

Which Linux/MAC OS CLI command is used to verify the IP address, mask, default router, and other IP settings?

ifconfig

Which Cisco IOS command is used to apply a configured ACL onto a specific interface?

ip access-group

You need to configure a default route. Which of the following commands is the correct way to set the default route out of your network?

ip route 0.0.0.0 0.0.0.0 172.20.3.2

What Cisco IOS command is used to enable the use of IPv4 routing on a Cisco device?

ip routing

You are shown the above internetwork diagram. Both PCs are running Microsoft Windows 8. You are trying to figure out why PC2 cannot connect to the Internet. Which of the following commands, when run from host PC2, would be useful for discovering a solution to the problem?

ipconfig /all

What parameter can be added to the end of a Cisco IOS ip route command to force its inclusion into the routing table, regardless of interface/next-hop status?

permanent

Which filter actions can be used within the configuration of an ACL? (Choose all that apply.)

permit deny

Which IOS command(s) will show the matches (or hits) for each ACL?

show access-lists show ip access-lists

Which Cisco IOS command is used to display the type of serial cable connected to an interface?

show controllers

Which Cisco IOS command is used to display the current assigned DHCP addresses?

show ip dhcp binding

Which command will show what access lists are assigned to an interface and specify direction?

show ip interface

Which Cisco IOS command can be used to display a list of basic IP information with a single line per interface, including IP address and interface status?

show ip interface brief

Which Cisco IOS command is used to display the OSPF LSAs that exist on a specific device?

show ip ospf database

What is the name of the Cisco IOS command used to display the current neighborships that exist on a specific OSPF device?

show ip ospf neighbors

What Cisco IOS command is used to display the status information of the interfaces on a Cisco device, including IP address and mask information, in the briefest format possible?

show protocols

You are at PC1 and have opened a telnet session with R1. Which one of the following commands or key sequences would list the suspended Telnet and SSH session on router R1?

show sessions

Which Cisco IOS command is used to display the current IOS version, where it is located, and what the filename is, as well as details about the physical memory installed on the device?

show version

Which Cisco IOS show command is used to display the VLAN configuration (including native VLAN configuration) of a router?

show vlans

When configuring a trunk between a router and a switch, which command must be configured on the switch to ensure that the trunk comes up? (Choose all that apply.)

switchport mode trunk

You are at PC1 and have opened a telnet session with R1. Which one of the following commands or key sequences would allow you to open a Telnet connection to R2?

telnet 172.16.32.1

An engineer is performing the IP subnet design for an organization and needs to find the best mask that should be used. The organization has been assigned the 172.16.44.0/22 network. They must have the addresses split up so they can be equally organized into16 subnets of at least 50 addresses. Which mask would best fit this requirement? (Choose all that apply.)

255.255.255.192

An engineer is performing the IP subnet design for an organization and needs to find the best mask that should be used. The organization has been assigned the 172.158.20.0/22 network. They must have the addresses split up so they can be organized into at least 16 subnets of at least 30 addresses. Which mask would best fit this requirement? (Choose all that apply.)

255.255.255.192 255.255.255.224

An engineer is performing the IP subnet design for an organization and needs to find the best mask that should be used. The organization has been assigned the 10.200.32.0/23 network. They must have the addresses split up so they can be equally organized into 16 subnets of at least 25 addresses. Which mask would best fit this requirement? (Choose all that apply.)

255.255.255.224

An engineer is performing the IP subnet design for an organization and needs to find the best mask that should be used. The organization has been assigned the 192.69.24.128/26 network. They must have the addresses split up so they can be organized into at least 8 subnets of at least 6 addresses. Which mask would best fit this requirement? (Choose all that apply.)

255.255.255.248 255.255.255.240

When designing subnets, what magic number would be used for the subnet mask 255.255.255.224?

32

Refer to the figure. Acme Corporation is adding a new field office and needs to figure out the best subnet that would meet its requirements. Currently, it has the 40.20.40.0/22 range. The office will initially have 25 PCs but will need to be able to expand up to a maximum of 60 at some point in the future. Which of the available options shown below would meet these requirements and not waste any address space?

40.20.41.64/26 40.20.41.0/26

Which VLSM subnets will overlap? (Choose all that apply.) 60.146.192.0/18 60.146.128.0/18 60.146.0.0/17 60.146.64.0/18 None

60.146.0.0/17 60.146.64.0/18

When calculating designing subnets, what magic number would be used for the subnet mask 255.255.192.0?

64

How many subnet bits are used for the IP address/mask 172.16.240.67/24?

8

Which ICMP message is used by the traceroute utility to determine the path to a destination?

TTL Exceeded

What is the multicast address OSPF uses to sent traffic to all other OSPF-speaking routers?

224.0.0.5

An office will be expanding, and a new network will need to be added to support the expansion. The new network will need to be capable of supporting a minimum of 140 network hosts and expand to a maximum of 332 network hosts. What is the proper VLSM subnet size for this requirement?

/23

In DHCP, what address is reserved for use by clients that are not yet configured with an IP address?

0.0.0.0

Which wildcard mask is the correct one to match all the traffic in a network with a subnet mask of 255.255.255.248?

0.0.0.7

How many subnet bits are used for the IP address/mask 130.184.59.65/17?

1

The CSU/DSU converts the Layer ________ standards between the Telco and the serial interface.

1

Which of the following VLSM subnets will overlap? (Choose two.)

10.1.11.111 /14 10.2.22.222 /15

What is the best summary route for the following networks? 10.200.64.0/18 10.201.128.0/17 10.200.192.0/19

10.200.0.0/15

What ranges of numbers are used when configuring an extended numbered ACL? (Choose all that apply.)

100—199 2000—2699

What is the default administrative distance assigned to all OSPF routes?

110

What is the best summary route for the following networks? 172.150.90.0 172.150.116.0 172.150.125.0 172.150.96.0

172.150.64.0/18

What is the best summary route for the following networks? 172.17.254.64 /26 172.17.255.36 /30 172.17.253.128 /25

172.17.252.0 /22

Which VLSM subnet will not overlap?

172.31.1.129 /32

How many subnet bits are used for the IP address/mask 120.74.27.127/26?

18

What is the best summary route for the following networks? 192.168.128.0 /23 192.168.131.0 /26 192.168.131.240 /29

192.168.128.0 /22

What contiguous IP subnet will meet the following requirements: 3 subnets that will support a maximum of 2000 hosts, 3 subnets that will support a maximum of 300 hosts, and 40 subnets that will support a maximum of 6 hosts?

192.168.96.0 /19

What ranges of numbers are used when configuring a standard numbered ACL? (Choose all that apply.)

1—99 and 1300—1999.

What is the best summary route for the following networks? 200.75.160.0/21 200.75.174.0/23 200.75.168.0/22

200.75.160.0/20

Refer to the figure. Acme Corporation is adding a new field office and needs to figure out the best subnet that would meet its requirements. Currently, it has the whole Class C address space (208.72.58.0/24). The office will initially have 10 PCs but will need to be able to expand up to a maximum of 30 at some point in the future. Which of the available options shown below would meet these requirements and not waste any address space? (Note: If there is more than one option, select the one lowest in the range.)

208.72.58.64/27

What name is used to refer to the piece of equipment that connects a router (serial interface) to a leased line provider?

CSU/DSU

What is one step in identifying a VLSM overlap?

Calculate the subnet ID and subnet broadcast address of each subnet.

On modern Cisco routers, what is the default version of internal routing logic used?

Cisco Express Forwarding

What type of route adds the subnet to the routing table of a Cisco device when the ip address command is issued on an interface with a state of Up/Up?

Connected route

What protocol can be used to automatically assign IP addresses and other parameters to a host or router?

DHCP

An ________ is a routing protocol that was design and intended for use between different autonomous systems.

EGP

What is the name of the process that occurs with link state routing protocols when they share their topology information to all attached neighbors (via multicast)?

Flooding

An ________ is a routing protocol that was designed and intended for use inside a single autonomous system.

IGP

When configuring a Cisco switch, which functionality is not the same between a router and a switch Cisco IOS CLI?

IP address assignment

Which of the following protocols are considered routed protocols? (Choose all that apply.)

IPv4 IPv6

Which of the following statements best describes the term autonomous system?

It is an internetwork under the administrative control of a single organization.

When looking over the output of the show ip ospf database Cisco IOS command, what type of LSA is associated with the entries that are listed under the "Router Link State" heading?

LSA Type 1

If an interface shows a status of Up/Down, what is the most likely cause of the problem to be investigated?

Layer 2 configuration

What type of route adds the host to the routing table of a Cisco device when the ip address command is issued on an interface with a state of Up/Up?

Local route

An engineer is performing the IP subnet design for an organization and needs to find the best mask that should be used. The organization has been assigned the 172.52.239.0/24 network. They must have the addresses split up so they can be equally organized into 10 subnets of at least 32 addresses. Which mask would best fit this requirement? (Choose all that apply.)

None

Which VLSM subnets will overlap? 72.100.216.0/22 172.100.220.0/23 172.100.192.0/20 None 172.100.208.0/21

None

Which code is used in the output of the show ip route Cisco IOS command to identify OSPF routes?

O

Standard ACLs can match the following:

Source addresses on both inbound and outbound interfaces

When a standard ping is performed from a Cisco device, which IP address is used as the source of the ICMP packets?

Outbound interface IP address

What is the name of the oldest variation of Cisco internal routing logic?

Process switching

Which interface status code type is generally used to display the Layer 2 status of an interface?

Protocol status

Which listed action will NOT occur from the OSPF configuration of the passive-interface Cisco IOS command on an interface?

Quit responding to ICMP messages

Refer to the figure. On which interface would the ip helper-address command be entered to ensure that the DHCP clients were able to get an IPv4 address from the DHCP server?

R1 — Fa0/0

Which IP routing protocols are classful? (Choose all that apply.)

RIP version 1 IGRP

The WAN cable that is installed by a Telco provider typically has an ________ connector.

RJ-48

The ________ configuration creates a subinterface for each VLAN on the trunk and routes all frames associated with each VLAN ID as it comes in or out of the subinterface.

ROAS

Which type of DHCP message is sent from the client to ask to be assigned with the IP address that was offered by the server?

Request

The ________ serves as each router's unique name or identifier within OSPF.

Router ID

What is a consideration to take into account when adding a new subnet to an existing VLSM design? (Choose the best answer.)

Select a VLSM subnet that has an adequate number of host IP addresses.

Which router interface type can be configured with an encapsulation of HDLC or PPP?

Serial

What type of cable is used to connect a router's console port and a management PC?

Serial rollover

You are at PC1 and have opened a telnet session with R1. Which one of the following commands could you issue to see the router ARP cache?

Show arp

What does the area parameter of the network OSPF subcommand specify?

The area to which an interface is assigned

Which items are not methods OSPF uses to pick a RID? (Choose three.)

The highest MAC address of the first physical interface in the up state if no loopback interfaces are configured The highest MAC address of the first loopback interface The router MAC address if mac-address [mac-address] is configured globally

As the network engineer, you are configuring the Fast Ethernet interface. You have issued the following command to the fa0/0 interface: ip address 200.16.24.1 255.255.255.0. Which of the following must be true before the router can add this information to its routing table? (Choose two.)

The interface must have the no shutdown command issued. The interface status codes for the interface must be in the up and up condition.

In what two conditions does a router choose to process a frame? (Choose two.)

When the frame has no errors When the frame destination address is the same as the local address (Layer 2)

You are trying to figure out whether a host on your network is correctly sending frames to its default gateway. Which of the following commands could you issue on the host to see the current IP to MAC address translations?

arp -a

When connecting two routers via a serial interface, which Cisco IOS command is required to set the line rate of the interface, and on which side of the connection would it be configured?

clock rate, DCE

Which Cisco IOS command is used to define the subnet that will be assigned via a local DHCP server?

network

Which Cisco IOS command is used to disable the use of the zero subnet?

no ip subnet-zero

Which CLI command is used to perform a manual DNS lookup of a hostname?

nslookup