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Network > CCNA > Flashcards

CCNA Flashcards

1
Q

What are two benefits of network automation? (Choose two)

A

reduced operational costs

faster changes with more reliable results

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2
Q

Which command enables a router to become a DHCP client?

A

ip address dhcp

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3
Q

When configuring IPv6 on an interface, which two IPv6 multicast groups are joined? (Choose two)

A

FF02::1

FF02::2

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4
Q

Which option about JSON is true?

A

used to describe structured data that includes arrays

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5
Q

Which IPv6 address type provides communication between subnets and cannot route on the Internet?

A

unique local

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6
Q

Which command prevents passwords from being stored in the configuration as plain text on a router or switch?

A

service password-encryption

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7
Q

What are two southbound APIs? (Choose two )

A

OpenFlow

NETCONF

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8
Q

Which set of action satisfy the requirement for multifactor authentication?

A

The user enters a user name and password, and then clicks a notification in an authentication app on a
mobile device

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9
Q

Which two capacities of Cisco DNA Center make it more extensible? (Choose two)

A

SDKs that support interaction with third-party network equipment

REST APIs that allow for external applications to interact natively with Cisco DNA Center

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10
Q

An email user has been lured into clicking a link in an email sent by their company’s security organization. The webpage that opens reports that it was safe but the link could have contained malicious code. Which type of security program is in place?

A

user awareness

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11
Q

Which type of wireless encryption is used for WPA2 in preshared key mode?

A

TKIP with RC4

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12
Q

Which two must be met before SSH can operate normally on a Cisco IOS switch? (Choose two)

A

The switch must be running a k9 (crypto) IOS image

The Ip domain-name command must be configured on the switch

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13
Q

Which type of address is the public IP address of a NAT device?

A

inside global

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14
Q

How does HSRP provide first hop redundancy?

A

It uses a shared virtual IMC and a virtual IP address to a group of routers that serve as the default
gateway for hosts on a LAN

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15
Q

Which way does a spine and-leaf architecture allow for scalability in a network when additional access ports are required?

A

A leaf switch can be added with connections to every spine switch

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16
Q

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

A

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

It can mitigate congestion by preventing the queue from filling up

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17
Q

A network engineer must back up 20 network router configurations globally within a customer environment. Which protocol allows the engineer to perform this function using the Cisco IOS MIB?

A

SNMP

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18
Q

A frame that enters a switch fails the Frame Check Sequence. Which two interface counters are incremented?
(Choose two)

A

CRC

input errors

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19
Q

How do TCP and UDP differ in the way that they establish a connection between two endpoints?

A

TCP uses the three-way handshake and UDP does not guarantee message delivery

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20
Q

When OSPF learns multiple paths to a network, how does it select a route?

A

It divides a reference bandwidth of 100 Mbps by the actual bandwidth of the existing interface to
calculate the router with the lowest cost.

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21
Q

Which configuration is needed to generate an RSA key for SSH on a router?

A

Assign a DNS domain name

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22
Q

What is the primary different between AAA authentication and authorization?

A

Authentication identifies and verifies a user who is attempting to access a system, and authorization
controls the tasks the user can perform.

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23
Q

A Cisco IP phone receive untagged data traffic from an attached PC. Which action is taken by the phone?

A

It allows the traffic to pass through unchanged

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24
Q

What is a benefit of using a Cisco Wireless LAN Controller?

A

It eliminates the need to configure each access point individually

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25
Q

What are two characteristics of a controller-based network? (Choose two)

A

It uses northbound and southbound APIs to communicate between architectural layers

It moves the control plane to a central point.

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26
Q

Which attribute does a router use to select the best path when two or more different routes to the same
destination exist from two different routing protocols.

A

administrative distance

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27
Q

Which unified access point mode continues to serve wireless clients after losing connectivity to the Cisco
Wireless LAN Controller?

A

flexconnect

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28
Q

Which two encoding methods are supported by REST APIs? (Choose two)

A

JSON

XML

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29
Q

Layer 2 Security Mechanisms

A

WPA+WPA2

802.1x

30
Q

Layer 3 Security Mechanisms (for WLAN)

A

web policy

Passthrough

31
Q

What are two reasons that cause late collisions to increment on an Ethernet interface? (Choose two)

A

when the cable length limits are exceeded

when one side of the connection is configured for half-duplex

32
Q

Router A learns the same route from two different neighbors, one of the neighbor routers is an OSPF neighbor and the other is an EIGRP neighbor. What is the administrative distance of the route that will be installed in the routing table?

A

90

33
Q

What is the primary effect of the spanning-tree portfast command?

A

It minimizes spanning-tree convergence time

34
Q

What is the default behavior of a Layer 2 switch when a frame with an unknown destination MAC address is received?

A

The Layer 2 switch floods packets to all ports except the receiving port in the given VLAN

35
Q

Which IPv6 address block sends packets to a group address rather than a single address?

A

FF00::/8

36
Q

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

A

SSID

Profile name

37
Q

Which two actions influence the EIGRP route selection process? (Choose two)

A

The router calculates the best backup path to the destination route and assigns it as the feasible
successor.

The router calculates the feasible distance of all paths to the destination route

38
Q

Which command is used to specify the delay time in seconds for LLDP to initialize on any interface?

A

lldp reinit

39
Q

An engineer configured an OSPF neighbor as a designated router. Which state verifies the designated router is in the proper mode?

A

Full

40
Q

An engineer is asked to protect unused ports that are configured in the default VLAN on a switch.
Which two steps will fulfill the request? (Choose two)

A

Administratively shut down the ports

Configure the port type as access and place in VLAN 99

41
Q

Which QoS Profile is selected in the GUI when configuring a voice over WLAN deployment?

A

Platinum

42
Q

Which statement identifies the functionality of virtual machines?

A

The hypervisor can virtualize physical components including CPU. memory, and storage

43
Q

Two switches are connected and using Cisco Dynamic Trunking Protocol SW1 is set to Dynamic Desirable
What is the result of this configuration?

A

The link becomes a trunk port.

44
Q

Which feature on the Cisco Wireless LAN Controller when enabled restricts management access from specific networks?

A

CPUACL

45
Q

A user configured OSPF in a single area between two routers A serial interface connecting R1 and R2 is
running encapsulation PPP By default which OSPF network type is seen on this interface when the user types show ip ospf interface on R1 or R2?

A

point-to-point

46
Q

A user configured OSPF and advertised the Gigabit Ethernet interface in OSPF By default, which type of
OSPF network does this interface belong to?

A

broadcast

47
Q

An organization has decided to start using cloud-provided services. Which cloud service allows the
organization to install its own operating system on a virtual machine?

A

infrastructure-as-a-service

48
Q

Which mode allows access points to be managed by Cisco Wireless LAN Controllers?

A

autonomous

49
Q

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

A

ipv6 address autoconfig

50
Q

Which two outcomes are predictable behaviors for HSRP? (Choose two)

A

The two routers share a virtual IP address that is used as the default gateway for devices on the LAN.

The two routers negotiate one router as the active router and the other as the standby router

51
Q

Which action is taken by a switch port enabled for PoE power classification override?

A

If a monitored port exceeds the maximum administrative value for power, the port is shutdown and err-disabled

52
Q

Which 802.11 frame type is association response?

A

management

53
Q

Which two tasks must be performed to configure NTP to a trusted server in client mode on a single network device? (Choose two)

A

Enable NTP authentication.

Specify the IP address of the NTP server

54
Q

Which result occurs when PortFast is enabled on an interface that is connected to another switch?

A

Spanning tree may fail to detect a switching loop in the network that causes broadcast storms

55
Q

When a floating static route is configured, which action ensures that the backup route is used when the
primary route fails?

A

The floating static route must have a higher administrative distance than the primary route so it is used as a backup

56
Q

What makes Cisco DNA Center different from traditional network management applications and their
management of networks?

A

It modular design allows someone to implement different versions to meet the specific needs of an
organization

57
Q

Which network allows devices to communicate without the need to access the Internet?

A

172.28.0.0/16

58
Q

the descriptions of file-transfer protocols from the left onto the correct protocols on the right:
FTP

A

provides reliability when loading IOS image upon boot up

uses ports 20 and 21

uses TCP

59
Q

the descriptions of file-transfer protocols from the left onto the correct protocols on the right:
TFTP

A

does not require user authentication

uses port 69

uses UDP

60
Q

When a site-to-site VPN is used, which protocol is responsible for the transport of user data?

A

IPsec

61
Q

Which mode must be used to configure EtherChannel between two switches without using a negotiation
protocol?

A

on

62
Q

A router running EIGRP has learned the same route from two different paths Which parameter does the router use to select the best path?

A

metric

63
Q

R1 has learned route 192.168.12.0/24 via IS-IS. OSPF, RIP. and Internal EIGRP Under normal operating
conditions, which routing protocol is installed in the routing table?

A

Internal EIGRP

64
Q

Which MAC address is recognized as a VRRP virtual address?

A

0000.5E00.010a

65
Q

Which statement correctly compares traditional networks and controller-based networks?

A

Only controller-based networks decouple the control plane and the data plane

66
Q

If a notice-level messaging is sent to a syslog server, which event has occurred?

A

A network device has restarted

67
Q

An engineer must configure a WLAN using the strongest encryption type for WPA2- PSK. Which cipher
fulfills the configuration requirement?

A

AES

68
Q

Which statement about Link Aggregation when implemented on a Cisco Wireless LAN Controller is true?

A

To pass client traffic two or more ports must be configured.

69
Q

When configuring a WLAN with WPA2 PSK in the Cisco Wireless LAN Controller GUI, which two formats
are available to select? (Choose two)

A

ASCII

hexadecimal

70
Q

Which API is used in controller-based architectures to interact with edge devices?

A

southbound

71
Q

the functions of network components:

DHCP

A

holds the TCP/IP settings to be distributed to the clients

assigns IP addresses to enable clients

assigns a default gateway to a client

72
Q

the functions of network components:

DNS

A

resolves web URLs to IP addresses

stores a list of IP addresses to names

Network (1 decks)

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