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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
Exhibit where 0 DHCP clients. Why?
state is not maintained by DHCP server
26
What conclusion can be drawn from DHCP configuration exhibit
router is configured for stateless DHCPv6
27
What IPV6 addressing is configured by the o flag
stateless DHCPv6
28
Exhibit: what should be done to give PC-A an automatically assigned IP
add DHCP relay
29
Exhibit: why are clients not getting DNS server
router is configured for SLAAC
30
T/F: The M flag is stateful DHCP
TRUE
31
T/F: ip address autoconfig is stateless DHCP
TRUE
32
T/F: HSRP is an open standard protocol
FALSE
33
Cisco proprietary protocol that provides redundancy through the use of an active device and standby device
HSRP
34
Open standard protocol that provides redundancy through virtual master router and backups
VRRP
35
Cisco proprietary protocol for load sharing
GLBP
36
Nonproprietary IPv4 election-only protocol with limited scalability
VRRPv2
37
Cisco proprietary protocol for IPV6 load balancing
GLBP for IPV6
38
Cisco proprietary protocol for IPV4 load balancing
GLBP
39
Nonproprietary protocol for ICMP for IPV4 redundancy
IRDP
40
Cisco proprietary protocol that only permits one router in a group to forward IPV6 packets
HSRP for IPV6
41
Nonproprietary FHRP implementation that's IPV4, election only, and has one master router per group
VRRPv2
42
How often do HSRP routers send hello packets to each other by default
3 seconds
43
What happens over HSRP failover process
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
Which MAC is used by a host connected to two L3 switches (and a virtual router)
the MAC of the virtual router
45
Using active and standby routers is a feature of _____
HSRP
46
Which default gateway should be set on a host connected to a FHRP network
the IP of the virtual router

CISCO CCNA (3 decks)

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