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CISCO CCNA > Chap2er 7-9 > Flashcards

Chap2er 7-9 Flashcards

yeah

1
Q

DHCP messages that are broadcasts

A

discover, request

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2
Q

DCHP messages that are unicasts

A

offer, acknowledgment

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3
Q

Order of DHCPV4 messages

A

DISCOVER, OFFER, REQUEST, PACK (ACKNOWLEDGE)

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4
Q

T/F: A client configured to use DHCP sends out a discover message on boot

A

TRUE

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5
Q

T/F: A DCHPREQUEST message is unicast

A

FALSE

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6
Q

What are the MAC and IPs in DHCPDISCOVER

A

FF-FF-FF-FF-FF-FF and 255.255.255.255

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7
Q

What IP does a PC use when requesting an IP

A

255.255.255.255

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8
Q

What DHCP message is sent by a server to let the client know it can use an IP

A

DHCPACK

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9
Q

T/F: All messages in DHCP lease renewal are unicast

A

TRUE

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10
Q

What protocol assigns IPs, and what port does it use

A

DHCP, 67

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11
Q

What is a result when DHCP is not working

A

hosts are assigned IP in the 169.254.0.0/16 network

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12
Q

What is the effect of ip dhcp exclude-address

A

IPs from to will not be assigned

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13
Q

What is the subnet mask equivalent of /23

A

255.255.254.0

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14
Q

Command to show all MAC addresses for IPs in DHCP

A

show ip dhcp binding

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15
Q

Ports used for DHCP traffic

A

67, 68

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16
Q

Why do ISPs assign DHCP addresses to routers

A

easy address management

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17
Q

What is typically used to configure connection to ISP

A

set WAN connection to DHCP

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18
Q

Advantage of configuring Cisco router as relay agent

A

provides relay services for multiple UDP connections

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19
Q

If a company uses SLAAC to config IPV6 addresses, what is used as the default gateway for hosts

A

link-local address of router interface attached to the network

20
Q

How do hosts verify IPV6 is unique

A

sends neighbor solicitation message and makes sure there’s no router advertisement

21
Q

DHCP IPV6 steps

A

solicit, advertise, request, reply (SARRy)

22
Q

Command to enable O flag

A

ipv6 nd other-config-flag

23
Q

What happens when PC tries to configure DHCP (M flag is 0, O flag is 1)

A

uses info contained in RA message and contacts DHCP server for more info

24
Q

What needs to be enabled on a router to receive prefix and prefix length on hosts

A

ipv6 unicast-routing

25
Q

Exhibit where 0 DHCP clients. Why?

A

state is not maintained by DHCP server

26
Q

What conclusion can be drawn from DHCP configuration exhibit

A

router is configured for stateless DHCPv6

27
Q

What IPV6 addressing is configured by the o flag

A

stateless DHCPv6

28
Q

Exhibit: what should be done to give PC-A an automatically assigned IP

A

add DHCP relay

29
Q

Exhibit: why are clients not getting DNS server

A

router is configured for SLAAC

30
Q

T/F: The M flag is stateful DHCP

A

TRUE

31
Q

T/F: ip address autoconfig is stateless DHCP

A

TRUE

32
Q

T/F: HSRP is an open standard protocol

A

FALSE

33
Q

Cisco proprietary protocol that provides redundancy through the use of an active device and standby device

A

HSRP

34
Q

Open standard protocol that provides redundancy through virtual master router and backups

A

VRRP

35
Q

Cisco proprietary protocol for load sharing

A

GLBP

36
Q

Nonproprietary IPv4 election-only protocol with limited scalability

A

VRRPv2

37
Q

Cisco proprietary protocol for IPV6 load balancing

A

GLBP for IPV6

38
Q

Cisco proprietary protocol for IPV4 load balancing

A

GLBP

39
Q

Nonproprietary protocol for ICMP for IPV4 redundancy

A

IRDP

40
Q

Cisco proprietary protocol that only permits one router in a group to forward IPV6 packets

A

HSRP for IPV6

41
Q

Nonproprietary FHRP implementation that’s IPV4, election only, and has one master router per group

A

VRRPv2

42
Q

How often do HSRP routers send hello packets to each other by default

A

3 seconds

43
Q

What happens over HSRP failover process

A

Forwarding router fails, standby router stops receiving hello messages, standby router assumes role of forwarding router, new forwarding router assumes MAC and IP of virtual router

44
Q

Which MAC is used by a host connected to two L3 switches (and a virtual router)

A

the MAC of the virtual router

45
Q

Using active and standby routers is a feature of _____

A

HSRP

46
Q

Which default gateway should be set on a host connected to a FHRP network

A

the IP of the virtual router

CISCO CCNA (3 decks)

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