CCNA Modules 1 - 3
What is an advantage of network devices using open standard protocols?
A client host and a server running different operating systems can successfully exchange data.
Which device performs the function of determining the path that messages should take through internetworks?
A router
What three application layer protocols are part of the TCP/IP protocol suite? (Choose three.)
DHCP, DNS, and FTP
A user is implementing security on a small office network. Which two actions would provide the minimum security requirements for this network? (Choose two.)
1. Implementing a Firewall 2. Anti-virus software
What are three characteristics of an SVI? (Choose three.)
1. It provides a means to remotely manage a switch. 2. It is associated with VLAN1 by default. 3. It is not associated with any physical interface on a switch.
For the TCP/IP protocol suite, what is the correct order of events when a Telnet message is being prepared to be sent over the network? 1. The Telnet-formatted data is provided to the next layer. 2. The IP header is added. 3. The ethernet header is added. 4. The TCP header is added.
1. The Telnet-formatted data is provided to the next layer. 4. The TCP header is added. 2. The IP header is added. 3. The ethernet header is added.
What are two characteristics of RAM on a Cisco device? (Choose two.)
1. The configuration that is actively running on the device is stored in RAM. 2. The contents of RAM are lost during a power cycle.
An administrator is configuring a switch console port with a password. In what order will the administrator travel through the IOS modes of operation in order to reach the mode in which the configuration commands will be entered? (Not all options are used.)
1. User EXEC 2. Privilege Exec Mode 3. Global Configuration Mode 4. Line Configuration Mode
Passwords can be used to restrict access to all or parts of the Cisco IOS. Select the modes and interfaces that can be protected with passwords. (Choose three.)
1. console interface 2. privileged EXEC mode 3. VTY interface
What method can be used by two computers to ensure that packets are not dropped because too much data is being sent too quickly?
Flow Control
What layer is responsible for routing messages through an internetwork in the TCP/IP model?
Internet
While trying to solve a network issue, a technician made multiple changes to the current router configuration file. The changes did not solve the problem and were not saved. What action can the technician take to discard the changes and work with the file in NVRAM?
Issue the reload command without saving the running configuration.
What function does pressing the Tab key have when entering a command in IOS?
It completes the remainder of a partially typed word in a command.
At which layer of the OSI model would a logical address be added during encapsulation?
Network Layer
Switch1> config t ^ % Invalid input detected at '^' marker. An administrator is trying to configure the switch but receives the error message that is displayed in the exhibit. What is the problem?
The administrator must first enter privileged EXEC mode before issuing the command.
Which method allows a computer to react accordingly when it requests data from a server and the server takes too long to respond?
Response Timeout
How is SSH different from Telnet?
SSH makes connections over the network, whereas Telnet is for out-of-band access.
A technician configures a switch with these commands: SwitchA(config)# interface vlan 1 SwitchA(config-if)# ip address 192.168.1.1 255.255.255.0 SwitchA(config-if)# no shutdown What is the technician configuring?
SVI (Switch Virtual Interface)
Which statement accurately describes a TCP/IP encapsulation process when a PC is sending data to the network?
Segments are sent from the transport layer to the internet layer.
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 loaded if the switch is restarted.
What is a characteristic of multicast messages?
They are sent to a select group of hosts.
A network administrator enters the service password-encryption command into the configuration mode of a router. What does this command accomplish?
This command prevents someone from viewing the running configuration passwords.
Why would a Layer 2 switch need an IP address?
To enable the switch to be managed remotely
At which OSI layer is a destination MAC address added to a PDU during the encapsulation process?
data link layer
What term describes a network where one computer can be both client and server?
peer-to-peer
A networking technician is working on the wireless network at a medical clinic. The technician accidentally sets up the wireless network so that patients can see the medical records data of other patients. Which of the four network characteristics has been violated in this situation?
security
What command is used to verify the condition of the switch interfaces, including the status of the interfaces and a configured IP address?
show ip interface brief
Which interface allows remote management of a Layer 2 switch?
the switch virtual interface
An administrator uses the Ctrl-Shift-6 key combination on a switch after issuing the ping command. What is the purpose of using these keystrokes?
to interrupt the ping process
