CCNA

Which scenario describes a function provided by the transport layer?

• • A student is using a classroom VoIP phone to call home. The unique identifier burned into the phone is a transport layer address used to contact another network device on the same network.

• • A student is playing a short web-based movie with sound. The movie and sound are encoded within the transport layer header.

• • A student has two web browser windows open in order to access two web sites. The transport layer ensures the correct web page is delivered to the correct browser window.

• • A corporate worker is accessing a web server located on a corporate network. The transport layer formats the screen so the web page appears properly no matter what device is being used to view the web site.

• None of them

Which information does the show startup-config command display?

• • the IOS image copied into RAM

• • the bootstrap program in the ROM

• • the contents of the current running configuration file in the RAM

• • the contents of the saved configuration file in the NVRAM

• • the bootstrap program in the EPROM

Refer to the exhibit. Host A has sent a packet to host B. What will be the source MAC and IP addresses on the packet when it arrives at host B?

• A)    Source MAC: 00E0.FE91.7799
  Source IP: 10.1.1.10

• B)    Source MAC: 00E0.FE10.17A3
  Source IP: 10.1.1.10

• C)     Source MAC: 00E0.FE10.17A3
  Source IP: 192.168.1.1

• D)    Source MAC: 00E0.FE91.7799
  Source IP: 10.1.1.1

• E)    Source MAC: 00E0.FE91.7799
  Source IP: 192.168.1.1

Refer to the exhibit. What is the cause of the error that is displayed in the configuration of inter-VLAN routing on router CiscoVille?

• The gig0/0 interface does not support inter-VLAN routing.

• The no shutdown command has not been configured.

• The IP address on CiscoVille is incorrect.

• The encapsulation dot1Q 20 command has not been configured.​

• The interface ip address on CiscoVille is incorrect.

What type of VLAN is initially the management VLAN?

• A)    default VLAN

• B)    native VLAN

• C)    data VLAN

• D)    management VLAN

• E)     voice VLAN

What is the function of STP in a scalable network?

• A)    It decreases the size of the failure domain to contain the impact of failures.

• B)    It protects the edge of the enterprise network from malicious activity.

• C)    It combines multiple switch trunk links to act as one logical link for increased bandwidth.

• D)    It disables redundant paths to eliminate Layer 2 loops.

• E)     It protects all network from malicious activity.

 Refer to the exhibit. Which switch will be the root bridge after the election process is complete?

• A)    S1

• B)    S2

• C)    S3

• D)    S4

• E)     None of them

Answer explanation

The root bridge is determined by the lowest bridge ID, which consists of the priority value and the MAC address. Because the priority values of all of the switches are identical, the MAC address is used to determine the root bridge. Because S2 has the lowest MAC address, S2 becomes the root bridge.

Refer to the exhibit. What are the possible port roles for ports A, B, C, and D in this RSTP-enabled network?

• A)    alternate, designated, root, root

• B)    designated, alternate, root, root

• C)    alternate, root, designated, root

• D)    designated, root, alternate, root

• E)     root, root, designated, alternate

What command can be used on a Windows PC to see the IP configuration of that computer?

• • show ip interface brief

• • ping

• • show interfaces

• • ipconfig

• show ip protocols

A network administrator is adding a new LAN to a branch office. The new LAN must support 25 connected devices. What is the smallest network mask that the network administrator can use for the new network?

• • 255.255.255.128

• • 255.255.255.192

• • 255.255.255.224

• • 255.255.255.240

• • 255.255.255.252