Ccna

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1.

Refer to the exhibit. What three statements are true about the IP configuration that is shown? (Choose three.) The address that is assigned to the computer represents private addressing. The computer is unable to communicate outside of the local network. The network of this computer can have 126 hosts.

The prefix of the computer address is /27.
The IP address that is assigned to the computer is routable on the Internet. The IP address that is assigned to the computer is a broadcast address.
2. As network administrator, what is the subnet mask that allows 510 hosts given the IP address 172.30.0.0? 255.255.0.0
255.255.248.0
255.255.252.0
255.255.254.0
255.255.255.0
255.255.255.128

3. Which OSI layers offers reliable, connection-oriented data communication services? application
presentation
session
transport
network

4. Which type of media is immune to EMI and RFI? (Choose two.) 10 Base-T
10 Base-2
10 Base-5
100 Base-FX
100 Base TX
1000 Base LX

5. When connectionless protocols are implemented at the lower layers of the OSI model, what is usually used to acknowledge that the data was received and to request the retransmission of missing data? IP

UDP
Ethernet
a connectionless acknowledgement
an upper-layer, connection-oriented protocol or service

6. Which combination of network id and subnet mask correctly identifies all IP addresses from 172.16.128.0 through 172.16.159.255? 172.16.128.0 255.255.255.224
172.16.128.0 255.255.0.0
172.16.128.0 255.255.192.0
172.16.128.0 255.255.224.0
172.16.128.0 255.255.255.192

7. During the encapsulation process, which identifiers are added at the transport layer? two networks routing the packets
two applications communicating the data
two hosts at either end of the communication
two nodes on the local network exchanging the frame

8. What are three characteristics of CSMA/CD? (Choose three) Devices can be configured with a higher transmission priority. A jam signal indicates that the collision has cleared and the media is not busy. A device listens and waits until the media is not busy before transmitting. The device with the electronic token is the only one that can transmit after a collision. All of the devices on a segment see data that passes on the network medium. After detecting a collision, hosts can attempt to resume transmission after a random time delay has expired.

9.

Refer to the exhibit. Each media link is labeled. What type of cable should be used to connect the different devices? Connection 1 – rollover cable
Connection 2 – straight-through cable
Connection 3 – crossover cable
Connection 1 – crossover cable
Connection 2 – rollover cable
Connection 3 – crossover cable
Connection 1 – straight-through cable
Connection 2 – crossover cable
Connection 3 – crossover cable
Connection 1 – straight-through cable
Connection 2 – crossover cable
Connection 3 – straight-through cable
Connection 1 – crossover cable
Connection 2 – straight-through cable
Connection 3 – crossover cable

10.

Refer to the exhibit. A network technician is trying to determine the correct IP address configuration for Host A. What is a valid configuration for Host A? IP address: 192.168.100.19; Subnet Mask: 255.255.255.248; Default Gateway: 192.16.1.2 IP address: 192.168.100.20; Subnet Mask: 255.255.255.240; Default Gateway: 192.168.100.17 IP address: 192.168.100.21; Subnet Mask: 255.255.255.248; Default Gateway: 192.168.100.18 IP address: 192.168.100.22; Subnet Mask: 255.255.255.240; Default Gateway: 10.1.1.5 IP address: 192.168.100.30; Subnet Mask: 255.255.255.240; Default Gateway: 192.168.1.1 IP address: 192.168.100.31; Subnet Mask: 255.255.255.240; Default Gateway: 192.168.100.18

11.

Refer to the exhibit. Host A is transmitting data to host B. What addresses will host A use to for the destination IP and MAC addresses in this communication? Destination MAC: BBBB:BBBB:BBBB...
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