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Networking > Routers > Flashcards

Routers Flashcards

1
Q

When a computer knows the destination IP address is not on its network, what message does it send to the default router?

A

ARP message

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2
Q

What is a primary goal of a router?

A

stop broadcasts

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3
Q

On a router by default, all interfaces are ________.

A

down, administratively down

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4
Q

Which command displays the networks a router can communicate with?

A

show ip route

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5
Q

How can you create a default route on a router?

A

ip route ‘destination-ip’ ‘destination-subnet’ ‘gateway-ip’

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6
Q

On a serial connection, what end of the connection needs to set the clock?

A

DCE

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7
Q

Which command can be used to impersonate the service provider and set the speed?

A

clock rate x

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8
Q

How do you create a floating static route?

A

increase the administrative distance to be greater than the default

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9
Q

What two commands are needed when assigning a vlan to a switch port?

A

switchport mode access

switchport access vlan x

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10
Q

What command is used to create a subinterface?

A

interface FastEthernet x/y.z

.z assigns subinterface to interface

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11
Q

What command is used to assign a tag to a subinterface?

A

encapsulation dot1q z

z refers to subinterface

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12
Q

What command is used to enable trunk mode on a port?

A

switchport mode trunk

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13
Q

What is the command for creating a VLAN?

A

vlan x

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14
Q

Which command should you use to assign a vlan to an interface?

A

switchport access vlan x

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15
Q

What command is used to create a subinterface?

A

interface ‘type’ x/y.z

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16
Q

When configuring a trunk port on a switch supporting both Cisco ISL and 802.1q encapsulation, which command should be entered first?

A

switchport trunk encapsulation dot1q

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17
Q

What does Cisco VoIP require from DHCP?

A

ip address and TFTP server

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18
Q

What are the 3 options a DHCP server will most likely assign?

A

router(gateway), subnet mask, dns server

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19
Q

On which of the following platforms is DHCP typically configured?

A

DHCP from a network device

DHCP relay from a central DCHP server

20
Q

What type of message is DHCP?

A

broadcast

21
Q

When configuring DHCP for distributing a specific range of addresses, what must you configure first?

A

ip dhcp excluded-address ‘ip-address range start’ ‘ip-address range end’

22
Q

What command is used to configure DHCP for a vlan?

A

ip dhcp pool vlan x

23
Q

What command is used to assign DNS server(s)?

A

dns-server ‘ip-address’ ‘ip-address2’

24
Q

What command is used to show the binding ip addresses?

A

show ip dhcp binding

25
Q

What windows command is used to end a lease on an IP address from a DHCP server?

A

ipconfig /release

26
Q

What windows command is used to request a new ip address from a DHCP server?

A

ipconfig /renew

27
Q

What is the command for a DHCP relay?

A

ip helper-address ‘ip-address’

28
Q

What is the function of routing protocols?

A

educate routers dynamically without user involvement

29
Q

What is the only way a static route will detect failure?

A

link status changes to down

30
Q

Which routing protocols use distance vector (DV)?

A

RIP, EIGRP, BGP

31
Q

What is a distance vector protocol?

A

only know information from neighbor devices

32
Q

What is a link state protocol?

A

maintains map of network system, loop free

33
Q

What is the largest network that uses BGP?

A

the internet

34
Q

Is distance vector or link state more resource efficient?

A

distance vector

35
Q

Does distance vector or link state have loop free mechanics in place?

A

link state

36
Q

What is a metric?

A

measurement for best path

37
Q

What is the metric for RIP?

A

hops

38
Q

What is the metric for IGRP?

A

bandwidth/delay

39
Q

Which routing protocols use link state?

A

OSPF

40
Q

What is the metric for OSPF?

A

bandwidth

41
Q

What is a feature of EIGRP?

A

unequal load balancing

42
Q

What is IS-IS?

A

routing protocol similar to OSPF, developed by OSI

43
Q

What is the default advertising timer for RIPv2?

A

30 seconds

44
Q

What was one of the most significant changes between RIP versions 1 and 2?

A

RIPv2 is classless

45
Q

What does the network command do (in RIP)?

A

tells RIP what networks to advertise

tells RIP what interfaces to send advertises out of

46
Q

If a packet comes into a router’s interface from another network and it does not match a route in the routing table, what will the router do with the packet?

A

drop the packet

47
Q

What command shows the details of the routing protocol?

A

show ip protocols

Networking (9 decks)

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