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QCM CCNA > BadAnswer > Flashcards

BadAnswer Flashcards

1
Q

What Cisco network management product helps to bring automation into your management workflows?

A

DNA Center

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2
Q

Which fiber type is a Cisco standard and has a distance of over 40 miles?(63km)

A

1000Base-LX

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3
Q

Which command configures an interface to enable HSRP with the virtual router IP address 10.1.1.10?

hsrp 1 ip 10.1.1.10

standby 1 ip 10.1.1.10

standby 1 hsrp ip 10.1.1.10

ip hsrp 1 standby 10.1.1.10

A

standby 1 ip 10.1.1.10

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4
Q

Rewrite this IPv6 address to shorten it as possible:

2001:0000:0011:0100:0000:0000:0001:1AB1.

A

2001:0:11:100::1:1AB1

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5
Q

What type of key technology is used with public key cryptography?

A

Asymmetric

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6
Q

Which command automatically generates an IPv6 address from a specified IPv6 prefix and MAC address of an interface?

ipv6 address dhcp

ipv6 address 2001:DB8:5:112::/64 eui-64

ipv6 address autoconfig

ipv6 address 2001:DB8:5:112::2/64 link-local

A

ipv6 address autoconfig

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7
Q

You have implemented a dynamic blacklist, using security intelligence to block illicit network activity. However, the blacklist contains several approved connections that users must access for business purposes.

Which action can you take to retain the blacklist while allowing users to access the approved sites?

A

Create a whitelist and manually add the approved addresses

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8
Q

Quelle commande pour activer le protocole LLDP ? Pour être sur qu’il traite les trames lldp entrante ?

A

LLDP run

LLDP receive

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9
Q

Which one of the following is not needed for a lightweight AP in default local mode to be able to support three SSIDs that are bound to three VLANs?

A

A trunk link carrying three VLANs

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10
Q

How does Cisco DNA Center gather data from the network?

A

The Cisco CU Analyzer tool gathers data from each licensed network device and streams it to the controller

Network devices use different services like SNMP, syslog, and streaming telemetry to send data to the controller

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11
Q

What is the typical method of communication used in wireless networks?

A

CSMA/CA

CSMA/CD agit après une collision (réseaux filaire) CSMA/CA agit avant collision(reseau sans fil)

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12
Q

What command allows you to easily verify the VTP mode?

show vtp status

show vtp brief

show vtp server

show vtp mode

A

show vtp brief

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13
Q

What are three options for EtherChannel configuration?

A

Static, LACP, and PAgP

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14
Q

How is a playbook expressed in Ansible ?

A

Ansible logiciel pour la configuration et la gestion des ordinateurs.
Réponse : YAML

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15
Q

What is the expected outcome when an EUI-64 address is generated?

A

The seventh bit of original MAC address of the interface is inverted.

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16
Q

Which of the following would you use to find the VLANs for which your switch is the root bridge?

show spanning-tree summary

show root all

show spanning-tree

show spanning-tree port root VLAN

A

show spanning-tree summary

17
Q

Which one of the following WLC deployment models would be best for a large enterprise with around 3000 lightweight APs?

Unified

Cloud-based

Embedded

Cisco Mobility Express

A

Unified

18
Q

What address does IPv6 use in order to multicast traffic to all devices on a network segment?

FF02::6

FF02::1

FF02::5

FF02::2

A

FF02::1

Rappel :

ff01: :1 : tous les noeuds en local,
ff02: :1 : tous les noeuds sur le réseau local,
ff02: :2 : tous les routeurs sur le réseau local,
ff02: :5 : tous les routeurs OSPF
ff02: :6 : tous les routeurs OSPF DR/BDR

19
Q

What is a prerequisite for configuring BFD?

A

Cisco Express Forwarding must be enabled on all participating BFD endpoints

20
Q

Which command enables a router to become a DHCP client?

A

ip dhcp client

21
Q

Which Cisco IOS feature would you use to protect TCP server from TCP SYN-flooding attacks?

Rerouting

TCP intercept

Access control lists

Encryption

A

TCP intercept

22
Q

How many bits is the sys-id-ext field in a BPDU?

A

12 + 4Bits priority

23
Q

Which of the following are disadvantages of using NAT?
(Choose three.)

NAT reduces address overlap occurrence.

Certain applications will not function with NAT enabled.

NAT increases flexibility when connecting to the Internet.

Translation introduces switching path delays.

NAT conserves legally registered addresses.

NAT causes loss of end-to-end IP traceability.

A

NAT causes loss of end-to-end IP traceability.

Translation introduces switching path delays.

Certain applications will not function with NAT enabled

24
Q

Which of the following cloud services is most likely to be purchased and then used to later install your own software applications?

PaaS

IaaS

SLBaaS

SaaS

A

IaaS

25
Q

Which two command sequences must be configured on a switch to establish a Layer 3 EtherChannel with an open-standard protocol?

interface GigabitEthernet0/0/1
channel-group 10 mode auto

interface GigabitEthernet0/0/1
channel-group 10 mode on

Should have chosen
interface port-channel 10
switchport
switchport mode trunk

interface GigabitEthernet0/0/1
channel-group 10 mode active

interface port-channel 10
no switchport
ip address 172.16.0.1 255.255.255.0

A

interface port-channel 10
switchport
switchport mode trunk

interface GigabitEthernet0/0/1
channel-group 10 mode active

26
Q

Which two actions are performed by the Weighted Random Early Detection mechanism?

(Choose two)

It guarantees the delivery of high-priority packets

It can identify different flows with a high level of granularity

IT supports protocol discovery

It drops lower-priority packets before it drops higher-priority packets

It can mitigate congestion by preventing the queue from filling up

A

It can identify different flows with a high level of granularity

It can mitigate congestion by preventing the queue from filling up

27
Q

Which two values or settings must be entered when configuring a new WLAN in the Cisco Wireless LAN Controller GUI?
(Choose two.)

IP address of one or more access points

management interface settings

SSID

QoS settings

profile name

A

SSID

profile name

28
Q

What layer in the TCP/IP stack is equivalent to the Transport layer of the OSI model?

Network Access

Wrong

Internet

Host-to-Host

A

Host-to-Host

29
Q

What is the default lease duration for a Cisco DHCP server?

A

One day

QCM CCNA (4 decks)

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