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RobsCCNA > ACI net fundamentals all > Flashcards

ACI net fundamentals all Flashcards

1
Q

How many pins are on a V.35 WAN cable interface?

A

34

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2
Q

Which layer 2 devices provide wireless access to wi-fi enabled hosts on the network?

A

access points (ap)

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3
Q

When default subnet masks are in use, what class of IP address is 133.6.5.4

A

Class B

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4
Q

In which type of internal switching process does a frame experience latency greater than cut-through but less than store forward internal switching?

A

Fragment-free

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5
Q

What are the components of an IP address?

A

network id, host id, and subnet id

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6
Q

What would be the host IP address range, if the IP address given is 172.28.23.2 and the subnet mask is 255.255.255.192?

A

/26 172.28.23.1 - 172.28.23.62

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7
Q

What are the four types of cloud computing, based on management type?

A

public, private, hybrid, and community

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8
Q

What model of cloud computing provides on-demand, online access to an application suite without the need for local installation?

A

SaaS Software as a Service

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9
Q

Which device connects the 4-wire cable of the ISP WAN and the router?

A

CSU/DSU (Channel Service Unit/Data Service Unit)

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10
Q

What term describes the behavior when TCP traffic leaving an interface has been reduced to near zero while UDP traffic is steadily increasing at the same time?

A

Starvation

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11
Q

On the basis of which address does a switch make forwarding decisions?

A

MAC Media Access Control address

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12
Q

Which layer 2 network devices forward frames based on MAC address table which is dynamically populated as the device learns new MAC addresses?

A

Switches

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13
Q

Which fields found in a TCP header are NOT found in a UDP header?

A

Sequence number, acknowledgement number, and window size

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14
Q

Which wireless channels were historically reserved by the FCC for government weather radar systems?

A

Channels 52-64 (5.250 - 5.330 GHz)

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15
Q

How many collision domains does a 12-port switch create?

A

12

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16
Q

How many broadcast domains does a 24-port switch create with 2 VLANS having 12 port assigned to each?

A

two

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17
Q

In which type of internal switching process does frame experience minimum latency?

A

cut-through

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18
Q

What command enables routing on a multilayer switch?

A

switch(config)# ip routing

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19
Q

What is the length of an internet protocol version 6 IPV6 address?

A

128 bits

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20
Q

What command is used to renew a DHCP-obtained IP address in Windows?

A

ipconfig/renew

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21
Q

What command is used to configure a static entry in the IPv6 neighbor discovery cache that will enhance the neighbor discovery process that occurs with IPv6?

A

ipv6 neighbor

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22
Q

What IP address concept was developed to conserve the public addressing space?

A

Private IP addressing

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23
Q

Which Cisco Internetwork Operating System (IOS) command is used to view the IPv6 routing table?

A

show ipv6 route

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24
Q

What are the only types of IP addresses registered with ethe Internetwork Information Center (InterNIC)?

A

public

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25
Q

Which OSI Layer 2 devices provide hardware-based switching of LAN traffic?

A

LAN Switches

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26
Q

What are the three approaches for troubleshooting network problems using the OSI model?

A

Bottom up, top down, and divide and conquer

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27
Q

What would be the host IP range, if the IP address given is 192.168.2.1 and the mask bit is 29?

A

192.168.2.1 to 192.168.2.6 /29 is .248

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28
Q

What command is used to configure a network interface card (NIC) in Linux?

A

ifconfig

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29
Q

Which CISCO Internetwork Operating System (IOS) command is used to view the information specific to the interface hardware?

A

show controllers serial

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30
Q

What is meant by the term measured service in cloud computing?

A

the process of tracking resource utilization by the customer for the purpose of charging for those resources

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31
Q

What is resource pooling in virtual computing?

A

a feature whereby collections of resources (CPU and memory) are stored in containers called pools, which are then shared by virtual machines

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32
Q

At what layer of the OSI model are RF waves?

A

one

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33
Q

What would be the transmission mode if two Cisco devices have their NIC speed configured to AUTO mode?

A

full duplex

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34
Q

What is the main difference between virtualization and cloud computing?

A

the location and ownership of the physical components

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35
Q

What should be the default gateway for a host that needs to access a server on a network across the local router?

A

IP address of the local interface of the router

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36
Q

How many pins are on the EIA/TI-530 WAN cable interface?

A

25

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37
Q

What would be the broadcast address if the IP address given is 172.28.232 and the subnet mask is 255.255.240.0

A

/20 172.28.31.255

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38
Q

From which two devices can a router receive clocking on a serial cable?

A

Modem or CSU/DSU

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39
Q

What are the three actions performed by transparent bridges?

A

Learn MAAAAAAAC address by examining the source address of each frame, decide whether to forward the frame or filter it out, and to create a loop-free environment by using STP

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40
Q

What is the purposed of virtual desktops?

A

It will allow you to implement a uniform user environment

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41
Q

What type of communication occurs when a host sends a frame to any specific host on the LAN?

A

Unicast

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42
Q

What command can be used to define a prefix pool when using DHCPv6?

A

ipv6 local pool

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43
Q

What command places a port on a multi-layer switch in layer 3 mode?

A

switch(config-if)# no switchport

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44
Q

What would be the broadcast address if the ip address given is 192.168.2.1 and the subnet mask is 255.255.255.192

A

/26 192.168.2.63

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45
Q

Which CISCO IOS show command will generate the output “Serial0 is administratively down, line protocol is down”?

A

show interfaces

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46
Q

What software allows a virtual machine to exist in virtual computing?

A

the hypervisor

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47
Q

Which cable is used on a router’s wide area network (WAN) interface to connect to the serial ports?

A

serial cable

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48
Q

Which OSI later 3 devices are used to segregate a network into separate broadcast domains?

A

routers

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49
Q

What are the three common service models of cloud computing?

A

Software as a Service, platform as a Service, and Infrastructure as a Service

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50
Q

How does a standalone switch treat a broadcast frame?

A

The switch will forward the packet to all ports except the port on which it was received

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51
Q

What antenna type radiates in a 360-degree pattern in the horizontal plane

A

Omnidirectional

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52
Q

What IPv6 command is used to define a static host name-to-address mapping in the host name cache?

A

ipv6host

53
Q

Which term defines a LAN segment where broadcast from one NIC can be received by all other NICs on the segment?

A

broadcast domain

54
Q

What type of IPv6 address has a prefix of FEC0::/10?

A

site-local

55
Q

What is the range of private address for class C ip address?

A

192.168.0.0 to 192.168.255.255

56
Q

In which mode is the IPv6 host command executed?

A

Global config mode

57
Q

How many broadcast domains does a 24-port switch, without VLAN configured, have?

A

one

58
Q

What is the range of private address for class B IP addresses?

A

172.16.0.0 to 172.16.31.255.255

59
Q

What is the WLAN name called?

A

SSID

60
Q

Which OSI layer 2 devices provide software-based switching of LAN traffic?

A

LAN bridges

61
Q

What would be the subnet ID if the IP address is 172.168.23.2, the maximum number of hosts per subnet is 254, and the maximum number of subnets possible is 256?

A

172.28.23.0 /24

62
Q

What model of cloud computing provides computer and server infrastructure, typically through virtualization environment?

A

IaaS

63
Q

How many pins are on an ETIA/TIA-449 WAN Cable interface?

A

37

64
Q

What type of interface has an entry for multiple next hops?

A

Multipoint interface

65
Q

What is the broadcast MAC address for ethernet as defined by IEEE?

A

FFFF.FFFF.FFFF

66
Q

What would be the subnet mask if the IP address is 172.168.23.2, the maximum number of hosts per subnet is 254, and the maximum number of subnets possible is 256?

A

/24 255.255.255.0

67
Q

Which cable type is the copper-wire LAN cabling standard defined by the TIA?

A

UTP

68
Q

What type of ports on a multi-layer switch have an assigned IP address and subnet mask?

A

routed ports

69
Q

How many pins are on an x.21 WAN cable interface?

A

15

70
Q

What behavior causes a ping packet to take a different path in the return than it did on its way to the destination?

A

asymmetric routing

71
Q

At which OSI layer do the wireless access ports operate?

A

2

72
Q

What are the fur port mode LEDs available on a Cisco Catalyst switch?

A

stat, util, duplex, and speed

73
Q

What type of communication occurs when a host sends a frame to all host machines in the ethernet lan segment?

A

broadcast

74
Q

How many broadcast domains does a 4-port hub create?

A

one

75
Q

Which type of switching process only waits to receive the first 64 bytes of the frame before forwarding it to the destination port?

A

Fragment-free

76
Q

How do information security requirements for virtual servers differ from the information security requirements for physical servers?

A

There is no difference

77
Q

What is the purpose of virtual PBX?

A

It allows you to outsource your telephony service to a service

78
Q

How does a standalone switch treat a multicast frame?

A

The switch will forward the packet to all ports except the port on which it was received

79
Q

What type of IPv6 address is used on links that connect organizations to their internet service providers ISPs?

A

Global unicast

80
Q

Which system LED color indicates that a switch is operating normally?

A

green

81
Q

Which OSI layer 3 parameter misconfiguration will cause a host that can communicate on local segment, to receive IP packets from a host across a router but would not be able to reply to that host?

A

default gateway

82
Q

What type of communication occurs when a host sends a frame to select few host machines on the Ethernet LAN segment?

A

multicast

83
Q

Which two unshielded twisted pair (UTP) cable categories support Gigabit ethernet?

A

UTP CAT 5 and 6

84
Q

Which type of cable is used to connect the console port on a switch to a terminal?

A

a rollover console cable

85
Q

Which TCP/IP transport layer protocol is connection-oriented?

A

TCP

86
Q

What model of cloud computing provides a virtualized deployment platform, a value-added solution stack, and an application development platform?

A

PaaS

87
Q

How many collision domains does a 12-port hub create?

A

one

88
Q

Which security control is lost when using cloud computing?

A

Physical control of the data

89
Q

What are the three types of switching processes?

A

Store and forward, cut-through, and fragment-free switching

90
Q

Which field in the header of a TCP packet refers to the number of packets that can be received without an acknowledgement?

A

window size

91
Q

Which term defines a LAN segment where frames of a group of NICs can collide with each other?

A

Collision Domain

92
Q

Which type of switching process allows switch to perform address lookup and forward the frame as soon as the destination address field in the frame header is received?

A

cut-through

93
Q

What is the name of the first Ethernet NIC in Linux Computer?

A

eth0

94
Q

Where should you install security updates and anti-malware software on a virtual computer?

A

On both the host computer and on all virtual machines

95
Q

Which type of Ethernet cable is used to connect the 10/100 port of the switch to the router?

A

a straight-through cable

96
Q

In which layer of the Cisco three-later hierarchical mode is the emphasis on high speed?

A

core

97
Q

Which Cisco IOS show command will generate the output “MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, rely 255/255, load 1/255”?

A

show interfaces

98
Q

What command lists all the TCP/IP configuration parameters for the windows computer on which it is run?

A

ipconfig /all

99
Q

what command is used to enable IPv6 forwarding on a router?

A

IPv6 unicast-routing

100
Q

Which network device provides a common connection point for network hosts and operates at OSI layer 1?

A

a hub

101
Q

Which type of Ethernet cable is used to connect 10/100 port on the switch to another switch

A

a crossover cable

102
Q

What type of IPv6 addresses participate in the neighbor discovery protocol and the stateless autoconfiguration process

A

link local

103
Q

Which type of switching process allows switch to verify the Frame Check Sequence (FCS) of a frame before forwards it the destination port?

A

store and forward

104
Q

What type of antenna is unidirectional with a wide beam width?

A

patch antenna

105
Q

What antenna type is very high-gain and has a very sharp beam in radiation?

A

parabolic dish

106
Q

Which type of switching process does not allow switch to verify the FCS Frame Check Sequence in a frame before forwarding it to the destination port?

A

cut-through

107
Q

How many hosts per subnet can be accommodated with IP address 172.168.23.2 ad subnet mask of 255.255.240.0?

A

4094

108
Q

Which TCP/IP transport layer protocol has very little overhead?

A

UDP

109
Q

Which protocol enables hosts on a LAN segment to determine the MAC address of hosts with Known IP address?

A

ARP address resolution protocol

110
Q

What would be the destination MAC address for a host sending a packet to another host across a router?

A

the mac address of the router

111
Q

Which network devices operate at layer 1 and provide multiple ports to connect many hosts on the network?

A

Hub

112
Q

What does an amber system LED on a Cisco Catalysts switch represent?

A

POST Power On Self Test Failure

113
Q

How does a standalone switch treat a Unicast frame for which is could not find any mapping in the switch MAC table?

A

the switch will forward the frame to all ports except the port on which it was received

114
Q

What command enables inter-VLAN routing on as switch?

A

the ip routing command

115
Q

What type of IPv6 address has the prefix FE80::/10?

A

link-local

116
Q

How many pins are on an EIA?TIA-232 WAN cable interface?

A

25

117
Q

What is the maximum number of subnets that will be created with IP address 192.168.2.1 and a subnet mask of 255.255.255.240

A

16

118
Q

From which end of a serial cable does a router receive a clock rate from a CSU/DSU or modem?

A

the Data Communication Equipment (DCE) end

119
Q

Which MS-DOS command will enable you to verify the default gateway configuration of a host that is unable to communicate with hosts across a local Cisco router?

A

the ipconfig command

120
Q

What three OSI layer parameters required to be configured on a host to communicate with hosts across the router

A

IP address, subnet mask, and the default gateway

121
Q

What is the purpose of virtual switches

A

It will allow you to host services on different broadcast domains on the same physical switch

122
Q

What type of device is required to host three LAAN subnets and a T1 internet connection?

A

router

123
Q

What is the range of a class A private IP addresses?

A

10.0.0.0 to 10.255.255.255

124
Q

What type of IPv6 address falls in the range 2000::/3 to E000::/3?

A

global unicast

125
Q

What service can be used to convert private IP addresses to public IP addresses and vice versa?

A

NAT Network Address Translation

126
Q

Which type of switching process requires switch to wait until the entire frame is received before forwarding it to the destination port?

A

store and forward

127
Q

Which TCP/IP transport layer protocol is connectionless?

A

UDP

128
Q

Which internal switching process works on the premise that collisions are detected within the first 64 bytes of a frame?

A

Fragment-Free

129
Q

In which type of internal switching process does a frame experience maximum latency?

A

store and forward

RobsCCNA (13 decks)

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