CCNA test 3

Note moyenne : Publié par Edelwess le 4 février 2019

Quiz similaires

Question 1
After making configuration changes on a Cisco switch, a network administrator issues a copy running-config startup-config command. What is the result of issuing this command?

The new configuration will be stored in flash memory.
The new configuration will be loaded if the switch is restarted.
The current IOS file will be replaced with the newly configured file.
The configuration changes will be removed and the original configuration will be restored.
Question 2
Which connection provides a secure CLI session with encryption to a Cisco switch?

A console connection
An AUX connection
A Telnet connection
An SSH connection
Question 3
What function does pressing the Tab key have when entering a command in IOS?

It aborts the current command and returns to configuration mode.
It exits configuration mode and returns to user EXEC mode.
It moves the cursor to the beginning of the next line.
It completes the remainder of a partially typed word in a command.
Question 4

Refer to the exhibit. A network administrator is configuring access control to switch SW1. If the administrator has already logged into a Telnet session on the switch, which password is needed to access privileged EXEC mode?

Letmein
Secretin
Lineconin
Linevtyin
Question 5
A network technician is attempting to configure an interface by entering the following command: SanJose(config)# ip address 192.168.2.1 255.255.255.0. The command is rejected by the device. What is the reason for this?

A console connection
An AUX connection
A Telnet connection
An SSH connection
Question 6
A network technician is attempting to configure an interface by entering the following command: SanJose(config)# ip address 192.168.2.1 255.255.255.0. The command is rejected by the device. What is the reason for this?

The command is being entered from the wrong mode of operation.
The command syntax is wrong.
The subnet mask information is incorrect.
The interface is shutdown and must be enabled before the switch will accept the IP address.
Question 7
What protocol is responsible for controlling the size of segments and the rate at which segments are exchanged between a web client and a web server?

TCP
IP
HTTP
Ethernet
Question 8
What layer is responsible for routing messages through an internetwork in the TCP/IP model?

Internet
Transport
Network access
Session
Question 9
Which statement accurately describes a TCP/IP encapsulation process when a PC is sending data to the network?

Data is sent from the internet layer to the network access layer.
Packets are sent from the network access layer to the transport layer.
Segments are sent from the transport layer to the internet layer.
Frames are sent from the network access layer to the internet layer.
Question 10
What unique address is embedded in an Ethernet NIC and used for communication on an Ethernet network?

Host address
IP address
MAC address
Network address
Question 11
A network administrator is troubleshooting connectivity issues on a server. Using a tester, the administrator notices that the signals generated by the server NIC are distorted and not usable. In which layer of the OSI model is the error categorized?

Presentation layer
Network layer
Physical layer
Data link layer
Question 12
A network administrator is troubleshooting connectivity issues on a server. Using a tester, the administrator notices that the signals generated by the server NIC are distorted and not usable. In which layer of the OSI model is the error categorized? (3)

The amount of traffic that is currently crossing the network
The sophistication of the encapsulation method applied to the data
The type of traffic that is crossing the network
The latency that is created by the number of network devices that the data is crossing
The bandwidth of the WAN connection to the Internet
The reliability of the gigabit Ethernet infrastructure of the backbone
Question 13
Which procedure is used to reduce the effect of crosstalk in copper cables?

Requiring proper grounding connections
Twisting opposing circuit wire pairs together
Wrapping the bundle of wires with metallic shielding
Designing a cable infrastructure to avoid crosstalk interference
Avoiding sharp bends during installation
Question 14
What is a characteristic of the LLC sublayer?

It provides the logical addressing required that identifies the device.
It provides delimitation of data according to the physical signaling requirements of the medium.
It places information in the frame allowing multiple Layer 3 protocols to use the same network interface and media.
It defines software processes that provide services to the physical layer.
Question 15
What method is used to manage contention-based access on a wireless network?

CSMA/CD
Priority ordering
CSMA/CA
Token passing
Question 16
During the encapsulation process, what occurs at the data link layer for a PC connected to an Ethernet network?

An IP address is added.
The logical address is added.
The physical address is added.
The process port number is added.
Question 17
What are the three primary functions provided by Layer 2 data encapsulation? (Choose three.)

Error correction through a collision detection method
Session control using port numbers
Data link layer addressing
Placement and removal of frames from the media
Detection of errors through CRC calculations
Delimiting groups of bits into frames
Conversion of bits into data signals
Question 18
What are two characteristics of Ethernet MAC addresses? (Choose two.)

They are globally unique.
They are routable on the Internet.
They are expressed as 12 hexadecimal digits.
MAC addresses use a flexible hierarchical structure.
MAC addresses must be unique for both Ethernet and serial interfaces on a device.
Question 19
If a device receives an Ethernet frame of 60 bytes, what will it do?

Drop the frame
Process the frame as it is
Send an error message to the sending device
Add random data bytes to make it 64 bytes long and then forward it
Question 20
What will a host on an Ethernet network do if it receives a frame with a destination MAC address that does not match its own MAC address?

It will discard the frame.
It will forward the frame to the next host.
It will remove the frame from the media.
It will strip off the data-link frame to check the destination IP address.
Question 21
Under which two circumstances will a switch flood a frame out of every port except the port that the frame was received on? (Choose two.)

The frame has the broadcast address as the destination address.
The destination address is unknown to the switch.
The source address in the frame header is the broadcast address.
The source address in the frame is a multicast address.
The destination address in the frame is a known unicast address.
Question 22
Which switching method has the lowest level of latency?

Cut-through
Store-and-forward
Fragment-free
Fast-forward
Question 23
Which two commands can be used on a Windows host to display the routing table? (Choose two.)

Netstat -s
Route print
Show ip route
Netstat -r
Tracert
Question 24
Which two functions are primary functions of a router? (Choose two.)

Packet forwarding
Microsegmentation
Domain name resolution
Path selection
Flow control
Question 25
What are the three ranges of IP addresses that are reserved for internal private use? (Choose three.)

10.0.0.0/8
64.100.0.0/14
127.16.0.0/12
172.16.0.0/12
192.31.7.0/24
192.168.0.0/16
Question 26
What purpose does NAT64 serve in IPv6?

It converts IPv6 packets into IPv4 packets.
It translates private IPv6 addresses into public IPv6 addresses
It enables companies to use IPv6 unique local addresses in the network.
It converts regular IPv6 addresses into 64-bit addresses that can be used on the Internet.
It converts the 48-bit MAC address into a 64-bit host address that can be used for automatic host addressing.
Question 27
What is the binary representation of 0xCA?

10111010
11010101
11001010
11011010
Question 28
At a minimum, which address is required on IPv6-enabled interfaces?

Link-local
Unique local
Site local
Global unicast
Question 29
Which service provides dynamic global IPv6 addressing to end devices without using a server that keeps a record of available IPv6 addresses?

Global unicast
SLAAC
Static IPv6 addressing
Stateless DHCPv6
Question 30
What is the purpose of the command ping ::1?

It tests the internal configuration of an IPv6 host.
It tests the broadcast capability of all hosts on the subnet.
It tests the multicast connectivity to all hosts on the subnet.
It tests the reachability of the default gateway for the network.

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