Ccna R&s Scaling Networks Chapters 1-4

Front 1

Which type of router allows users to access content anytime and anyplace, regardless of whether they are at home or work?

Back 1

network edge routers

Front 2

How much traffic is a 48-port gigabit switch capable of switching when operating at full wire speed?

Back 2

48 Gb/s

Front 3

Provides a high-speed backbone link btween dispersed networks

Back 3

Core Layer

Front 4

Forwards traffic from one local network to another

Back 4

Distribution Layer

Front 5

Provides connectivity for users

Back 5

Access Layer

Front 6

Combines multiple physical links into a single logical link

Back 6

Ether Channel

Front 7

What is a characteristic of out-of-band device management?

Back 7

It requires a terminal emulation client

Front 8

What are two features modern enterprise networks are expected to support?

Back 8

Critical applications
Converged network traffic

Front 9

Among the beneficial functions of a router are enhanced network security and containment of _____ traffic.

Back 9

broadcast

Front 10

Which network design solution will best extend access layer connectivity to host devices?

Back 10

Wireless connectivity

Front 11

Which two methods help to prevent the disruption of network services?

Back 11

Duplicate equipment to provide failover services
Redundant connections to provide alternate physical paths

Front 12

The number of ports available on a single switch is referred to as _____ _______.

Back 12

port density

Front 13

Which two issues are the result of a broadcast storm?

Back 13

Due to high processing demands, communication may fail between end stations in the broadcast domain.
Constant changes to the MAC address table prevent a switch from accurately forwarding frames.

Front 14

Which port state receives BPDU frames, but does not forward ANY frames?

Back 14

Blocking

Front 15

Which port state can participate in BPDU frame forwarding based on BPDUs received, but does not forward data frames?

Back 15

Listening

Front 16

Which port state learns MAC addresses, but does not forward data frames?

Back 16

Learning

Front 17

Which port state forwards data frames and sends and receives BPDU frames?

Back 17

Forwarding

Front 18

Which port state does not participate in spanning tree and does not forward frames?

Back 18

Disabled

Front 19

Which port state is set when the switch port is administratively disabled?

Back 19

Disabled

Front 20

Default priority value

Back 20

32768

Front 21

What is one way to correct a spanning tree failure?

Back 21

Manually remove redundant links in the switched network.

Front 22

What is the first step of the spanning-tree election process?

Back 22

All the switches send out BPDUs advertising themselves as the root bridge.

Front 23

Which five port states are used by PVST+

Back 23

Blocking
Listening
Learning
Forwarding
Disabled

Front 24

Which three port states are used by Rapid PVST+?

Back 24

Discarding
Learning
Forwarding

Front 25

Using multiple paths between switches to ensure there is no single point of failure is an example of __________.

Back 25

Redundancy

Front 26

Used within a group of routers for selecting an active device and a standby device to provide gateway services to a LAN.

Back 26

HSRP

Front 27

Cisco enhancement of RSTP to provide a spanning-tree instance for each VLAN

Back 27

Rapid PVST+

Front 28

Legacy standard for STP that runs all VLANs in a single spanning-tree instance

Back 28

STP

Front 29

Allows multiple VLANs to run in a single spanning-tree instance

Back 29

MSTP

Front 30

Cisco enhancement of STP that provides a separate spanning-tree instance for each VLAN

Back 30

PVST+

Front 31

Updated version of the STP standard, incorporating IEEE 802.1w

Back 31

802.1D-2004

Front 32

Evolution of STP that provides faster convergence than STP

Back 32

RSTP

Front 33

Routes traffic destined to network segments beyond the source network segment for which the sending node may not have explicit routing info

Back 33

Default Gateway

Front 34

A set of routers working together appearing as a single router to hosts on a LAN segment

Back 34

Virtual Router

Front 35

Layer 3 address assigned to a protocol that shares the single address among multiple devices

Back 35

Virtual IP Address

Front 36

A device that is part of a virtual router group assigned to alternate default gateway

Back 36

Standby Router

Front 37

Layer 2 address returned by ARP for an FHRP gateway

Back 37

Virtual MAC Address

Front 38

Device that is part of a virtual router group assigned to default gateway

Back 38

Forwarding Router

Front 39

Cisco-proprietary FHRP designed to allow for transparent failover of a first-hop IPv4 device

Back 39

HSRP

Front 40

Used in a group of routers for selecting an active and a standby device

Back 40

HSRP

Front 41

Non-proprietary election protocol that allows several routers to utilize the same vitual IPv4 address

Back 41

VRRP

Front 42

One router is elected as the virtual master, with the other routers acting as backups in case the primary virtual router fails

Back 42

VRRP

Front 43

Cisco-proprietary FHRP that protects data traffic from a failed router or circuit while also allowing load balancing between a group of redundant routers

Back 43

GLBP

Front 44

Allows IPv4 hosts to locate routers that provide IPv4 connectivity to other (nonlocal) IP networks

Back 44

IRDP

Front 45

Provide alternate default gateways for hosts in the redundant router or multilayer switched environment

Back 45

FHRP

Front 46

Sends BPDU frames for communication between switches

Back 46

STP

Front 47

What command can verify if a switch is a root bridge. What command can be used to do this?

Back 47

show spanning-tree

Front 48

Which two FHRP protocols will not be able to function with multivendor devices?

Back 48

HSRP
GLBP

Front 49

The switch port immediately transitions from blocking to the forwarding state.

Back 49

PortFast

Front 50

T/F: A switch port with PortFast configured can receive BPDUs.

Back 50

False

Front 51

With FHRP, which two items will be shared by a set of routers appearing as a single router?

Back 51

IP address
MAC address

Front 52

After the election of the root bridge has been completed, how will switches find the best paths to the root bridge?

Back 52

Each switch will analyze the sum of all port costs to reach the root and use the path with the lowest cost.

Front 53

Cisco-proprietary protocol that aids in the automatic creation of EtherChannel links

Back 53

PAgP

Front 54

IEEE standard that can be used to facilitate EtherChannels in multivendor environments

Back 54

LACP

Front 55

Places an interface in a passive, responding state. Does not initiate PAgP negotiations

Back 55

Auto

Front 56

Initiates LACP negotiations with other interfaces

Back 56

Active

Front 57

Actively initiates PAgP negotiations with other interfaces

Back 57

Desirable

Front 58

Forces EtherChannel state without PAgP or LACP initiated negotiations

Back 58

On

Front 59

Places an interface in a passive, responding state. Does not initiate LACP negotiations

Back 59

Passive

Front 60

PAgP modes

Back 60

On
Desirable
Auto

Front 61

LACP modes

Back 61

On
Active
Passive

Front 62

Which three parameters must match, on the ports of two switches, for a PAgP Etherchannel to be created?

Back 62

Speed
Duplex
VLAN

Front 63

The command Switch (config-if-range)#__________ 1 mode active creates an interface port channel 1 on a switch.

Back 63

channel-group

Front 64

EtherChannel link can be configured for trunk or access mode.

Back 64

True

Front 65

T/F: When one of the physical ports in the Ether Channel fails, the channel continues transmitting data with reduced bandwidth

Back 65

True

Front 66

Which mode will configure PAgP so that it initiates the EtherChannel negotiation?

Back 66

desirable

Front 67

T/F: An EtherChannel link can only be formed by grouping interfaces of the same type.

Back 67

True

Front 68

T/F: An EtherChannel link can only be created between Layer 3 switches.​

Back 68

False

Front 69

Which command displays only one line of information per port channel?

Back 69

show etherchannel summary

Front 70

If Switch1 is in auto mode, which mode should be configured on Switch2 to form the EtherChannel?

Back 70

desirable

Front 71

Which two protocols are used to implement EtherChannel?

Back 71

Port Aggregation Protocol
Link Aggregation Control Protocol

Front 72

T/F: EtherChannel uses existing switch ports.

Back 72

True

Front 73

T/F: STP does not run on redundant EtherChannel links.

Back 73

False

Front 74

T/F: All configuration tasks must be done on the individual ports in the EtherChannel link.

Back 74

False

Front 75

What will happen if a network administrator puts a port that is part of an EtherChannel bundle into a different VLAN than the other ports in that bundle?

Back 75

The Ether Channel will fail.

Front 76

What are three advantages of using EtherChannel technology?

Back 76

Configuration tasks can be done on the EtherChannel interface.
There is no need to upgrade links to faster connections to increase bandwidth.
A spanning tree recalculation is not required when a single link within the channel goes down.

Front 77

Which three interface parameters must match for an EtherChannel to form?

Back 77

allowed VLANs
native VLAN
trunking mode

Front 78

A rogue AP is capturing traffic and then forwarding it on to the legitimate AP. This type of attack is known as a ___-__-___-______ attack.

Back 78

man in the middle

Front 79

What is a characteristic of a Yagi antenna that is used by Cisco Aironet Access Points?​

Back 79

It can be used for long-distance Wi-Fi networking

Front 80

Wi-Fi antennas referred as a "rubber duck" design and provide 360-degree coverage.

Back 80

Omnidirectional

Front 81

Clients are using 802.11n and 802.11g radios on An IEEE 802.11n mixed-mode network. The 802.11n clients are complaining of slower than normal speeds. What is the problem?

Back 81

This is the normal behavior of a mixed-mode network.

Front 82

What type of frames are used for advertising, authenticating, and associating with a wireless AP?

Back 82

Management

Front 83

What Wi-Fi management frame is regularly broadcast by APs to announce their presence?

Back 83

Beacon

Front 84

If an administrator is troubleshooting a WLAN using a bottom up approach, which action would be taken first?

Back 84

Make sure all devices are powered

Front 85

Two recommendations to follow when planning the location of multiple APs?

Back 85

Position APs in locations where users are expected to be.

Front 86

Provides network access within a distance of up to 300 meters

Back 86

Wi-Fi

Front 87

Uses device pairing to communicate up to 100 meters

Back 87

Bluetooth

Front 88

Useful in remote areas, but requires a clear line of sight

Back 88

Satellite Broadband

Front 89

Alternative to Cable and DSL that can communicate up to 50km

Back 89

WiMAX

Front 90

All employees must use the microwave ovens located in the employee cafeteria and cannot have microwaves in their offices. What wireless security risk is the company trying to avoid?

Back 90

Accidental Interference

Front 91

Which combination of WLAN authentication and encryption is recommended as a best practice for home users?

Back 91

WPA2 and AES

Front 92

Known as "WiGig", the IEEE 802.11 __ standard provides average speeds of up to 7 Gb/s, but will switch to a lower GHz band when roaming is employed.

Back 92

ad

Front 93

Involves several BSSs that are joined through a common distribution system.

Back 93

ESS

Front 94

Which wireless RF band do IEEE 802.11b/g devices use?

Back 94

2.4 GHz