CCNA Flashcards
Which 802.11 frame type is Association Response?
A. management
B. protected frame
C. action
D. control
management
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.
B. TCP uses synchronization packets, and UDP uses acknowledgment packets.
C. UDP provides reliable message transfer, and TCP is a connectionless protocol.
D. UDP uses SYN, SYN ACK, and FIN bits in the frame header while TCP uses SYN, SYN ACK, and ACK bits.
TCP uses the three-way handshake, and UDP does not guarantee message delivery.
In which way does a spine-and-leaf architecture allow for scalability in a network when additional access ports are required?
A. A spine switch and a leaf switch can be added with redundant connections between them.
B. A spine switch can be added with at least 40 GB uplinks.
C. A leaf switch can be added with connections to every spine switch.
D. A leaf switch can be added with a single connection to a core spine switch.
C- A leaf switch can be added with connections to every spine switch.
What identifies the functionality of virtual machines?
A. The hypervisor communicates on Layer 3 without the need for additional resources.
B. Each hypervisor supports a single virtual machine and a single software switch.
C. The hypervisor virtualizes physical components including CPU, memory, and storage.
D. Virtualized servers run efficiently when physically connected to a switch that is separate from the hypervisor.
The hypervisor virtualizes physical components including CPU, memory, and storage.
Which command automatically generates an IPv6 address from a specified IPv6 prefix and MAC address of an interface?
A. ipv6 address dhcp
B. ipv6 address 2001:DB8:5:112::/64 eui-64
C. ipv6 address autoconfig
D. ipv6 address 2001:DB8:5:112::2/64 link-local
ipv6 address autoconfig
When configuring IPv6 on an interface, which two IPv6 multicast groups are joined? (Choose two.)
A. 2000::/3
B. 2002::5
C. FC00::/7
D. FF02::1
E. FF02::2
FF02::1 and FF02::2
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 forwards the packet and adds the destination MAC address to its MAC address table.
B. The Layer 2 switch sends a copy of a packet to CPU for destination MAC address learning.
C. The Layer 2 switch floods packets to all ports except the receiving port in the given VLAN.
D. The Layer 2 switch drops the received frame.
The Layer 2 switch floods packets to all ports except the receiving port in the given VLAN.
An engineer must configure a /30 subnet between two routes. Which usable IP address and subnet mask combination meets this criteria?
A. interface e0/0 description to XX-AXXX:XXXXX ip address 10.2.1.3 255.255.255.252
B. interface e0/0 description to XX-AXXX:XXXXX ip address 192.168.1.1 255.255.255.248
C. interface e0/0 description to XX-AXXX:XXXXX ip address 172.16.1.4 255.255.255.248
D. interface e0/0 description to XX-AXXX:XXXXX ip address 209.165.201.2 225.255.255.252
interface e0/0 description to XX-AXXX:XXXXX ip address 209.165.201.2 225.255.255.252
Which network allows devices to communicate without the need to access the Internet?
A. 172.9.0.0/16
B. 172.28.0.0/16
C. 192.0.0.0/8
D. 209.165.201.0/24
172.28.0.0/16
Which IPv6 address type provides communication between subnets and cannot route on the Internet?
A. link-local
B. unique local
C. multicast
D. global unicast
unique local
Which IPv6 address block sends packets to a group address rather than a single address?
A. 2000::/3
B. FC00::/7
C. FE80::/10
D. FF00::/8
FF00::/8
What are two reasons that cause late collisions to increment on an Ethernet interface? (Choose two.)
A. when Carrier Sense Multiple Access/Collision Detection is used
B. when one side of the connection is configured for half-duplex
C. when the sending device waits 15 seconds before sending the frame again
D. when a collision occurs after the 32nd byte of a frame has been transmitted
E. when the cable length limits are exceeded
when one side of the connection is configured for half-duplex and when the cable length limits are exceeded
What is a benefit of using a Cisco Wireless LAN Controller?
A. It eliminates the need to configure each access point individually.
B. Central AP management requires more complex configurations.
C. Unique SSIDs cannot use the same authentication method.
D. It supports autonomous and lightweight APs.
It eliminates the need to configure each access point individually.
Which action is taken by 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.
B. When a powered device begins drawing power from a PoE switch port, a syslog message is generated.
C. As power usage on a PoE switch port is checked, data flow to the connected device is temporarily paused.
D. If a switch determines that a device is using less than the minimum configured power, it assumes the device has failed and disconnects it.
If a monitored port exceeds the maximum administrative value for power, the port is shutdown and err-disabled.
What occurs to frames during the process of frame flooding?
A. Frames are sent to all ports, including those that are assigned to other VLANs.
B. Frames are sent to every port on the switch that has a matching entry in MAC address table.
C. Frames are sent to every port on the switch in the same VLAN except from the originating port.
D. Frames are sent to every port on the switch in the same VLAN.
Frames are sent to every port on the switch in the same VLAN except from the originating port.
Which function does the range of private IPv4 addresses perform?
A. allows multiple companies to each use the same addresses without conflicts
B. provides a direct connection for hosts from outside of the enterprise network
C. ensures that NAT is not required to reach the Internet with private range addressing
D. enables secure communications to the Internet for all external hosts
allows multiple companies to each use the same addresses without conflicts
Which action must be taken to assign a global unicast IPv6 address on an interface that is derived from the MAC address of that interface?
A. explicitly assign a link-local address
B. disable the EUI-64 bit process
C. enable SLAAC on an interface
D. configure a stateful DHCPv6 server on the network
enable SLAAC on an interface
Several new coverage cells are required to improve the Wi-Fi network of an organization. Which two standard designs are recommended? (Choose two.)
A. 5GHz provides increased network capacity with up to 23 nonoverlapping channels.
B. 5GHz channel selection requires an autonomous access point.
C. Cells that overlap one another are configured to use nonoverlapping channels.
D. Adjacent cells with overlapping channels use a repeater access point.
E. For maximum throughput, the WLC is configured to dynamically set adjacent access points to the channel.
Cells that overlap one another are configured to use nonoverlapping channels and For maximum throughput, the WLC is configured to dynamically set adjacent access points to the channel.
How do TCP and UDP differ in the way they provide reliability for delivery of packets?
A. TCP does not guarantee delivery or error checking to ensure that there is no corruption of data, UDP provides message acknowledgement and retransmits data if lost.
B. TCP provides flow control to avoid overwhelming a receiver by sending too many packets at once, UDP sends packets to the receiver in a continuous stream without checking.
C. TCP is a connectionless protocol that does not provide reliable delivery of data; UDP is a connection-oriented protocol that uses sequencing to provide reliable delivery.
D. TCP uses windowing to deliver packets reliably; UDP provides reliable message transfer between hosts by establishing a three-way handshake.
TCP provides flow control to avoid overwhelming a receiver by sending too many packets at once, UDP sends packets to the receiver in a continuous stream without checking.
What are two differences between optical-fiber cabling and copper cabling? (Choose two.)
A. A BNC connector is used for fiber connections
B. The glass core component is encased in a cladding
C. The data can pass through the cladding
D. Light is transmitted through the core of the fiber
E. Fiber connects to physical interfaces using RJ-45 connections
The glass core component is encased in a cladding and Light is transmitted through the core of the fiber
How does CAPWAP communicate between an access point in local mode and a WLC?
A. The access point must not be connected to the wired network, as it would create a loop
B. The access point must be connected to the same switch as the WLC
C. The access point must directly connect to the WLC using a copper cable
D. The access point has the ability to link to any switch in the network, assuming connectivity to the WLC
The access point has the ability to link to any switch in the network, assuming connectivity to the WLC
Which IPv6 address block forwards packets to a multicast address rather than a unicast address?
A. 2000::/3
B. FC00::/7
C. FE80::/10
D. FF00::/12
FF00::/12
What is the difference regarding reliability and communication type between TCP and UDP?
A. TCP is reliable and is a connectionless protocol; UDP is not reliable and is a connection-oriented protocol.
B. TCP is not reliable and is a connectionless protocol; UDP is reliable and is a connection-oriented protocol.
C. TCP is not reliable and is a connection-oriented protocol; UDP is reliable and is a connectionless protocol.
D. TCP is reliable and is a connection-oriented protocol; UDP is not reliable and is a connectionless protocol.
TCP is reliable and is a connection-oriented protocol; UDP is not reliable and is a connectionless protocol.
What are two descriptions of three-tier network topologies? (Choose two.)
A. The distribution layer runs Layer 2 and Layer 3 technologies
B. The network core is designed to maintain continuous connectivity when devices fail
C. The access layer manages routing between devices in different domains
D. The core layer maintains wired connections for each host
E. The core and distribution layers perform the same functions
The distribution layer runs Layer 2 and Layer 3 technologies………The network core is designed to maintain continuous connectivity when devices fail