Net Essentials 17-20

What is the difference between the terms keyword and argument in the IOS command structure?

Keyword - This is a specific parameter defined in the operating system (show ip protocols: in this example "ip protocols" is a keyword. Argument - This is not predefined; it is a value or variable defined by the user, like 192.168.10.5 or a hostname.

In the show running-config command, which part of the syntax is represented by running-config? A. a prompt B. the command C. a variable D. a keyword

D. The Keyword

Choose the correct order for the router boot up process. A. load bootstrap, load the IOS, perform POST, load the configuration file B. perform POST, load the IOS, load the configuration file, load bootstrap C. load bootstrap, perform POST, load the IOS, load the configuration file D. perform POST, load bootstrap, load the IOS, load the configuration file

D. perform POST, load bootstrap, load the IOS, load the startup-configuration file

This approach is also called the spot-the-differences approach and attempts to resolve the problem by changing the nonoperational elements to be consistent with the working ones A. Bottom-Up B. Top-Down C. Divide and Conquer D. Substitution E. Comparison F. Educated Guess

E. Comparison

Which interface connects to external networks, usually over a large distance? A. auxiliary port B. console port C. SSH access D. LAN interface E. WAN interface

E. WAN interface

Define POST

Power On Self Test When you first power-on a Cisco device, it will perform a power-on self-test (POST) to discover the hardware components and verify that all components work properly.

From global configuration mode, an administrator is attempting to create a message-of-the-day banner by using the command - banner motd Authorized access only! Violators will be prosecuted!. When users log in using Telnet, the banner does not appear correctly. What is the problem?

The admin failed to use a delimiter before and after the warning S1(config)# banner motd #Authorized access only! Violators will be prosecuted!#

What is the effect of using the Router# copy running-config startup-config command on a router?

The command copy running-config startup-config copies the running-configuration file from RAM into NVRAM and saves it as the startup-configuration file. Since NVRAM is none-volatile memory it will be able to retain the configuration details when the router is powered off.

What happens when the transport input ssh command is entered on the switch vty lines?

The transport input ssh command when entered on the switch vty (virtual terminal lines) will encrypt all inbound controlled telnet connections.

Immediately after a router completes its boot sequence, the network administrator wants to check the configuration of the router. From privileged EXEC mode, which two commands could the administrator use for this purpose?

-show startup-config -show running-config

This approach starts with the physical layer and the physical components of the network. A. Bottom-Up B. Top-Down C. Divide and Conquer D. Substitution E. Comparison F. Educated Guess

A. Bottom-Up

Which two commands would return you to the privileged EXEC prompt regardless of the configuration mode you are in? A. CTRL+Z B. disable C. enable D. end E. exit

A. CTRL+Z D. End

Uses a low speed serial or USB connection to provide direct connect, out-of-band management access to a Cisco device. A. Console B. SSH C. AUX port D. Ox Port

A. Console

Which of the following interfaces can be used to manage the router? (Choose three.) A. Console Port B. NIM slots C. auxiliary port D. USB port E. management interface

A. Console Port C. auxiliary port E. management interface

Accessing the device via the network is considered... A. In-Band Management B. Out-of-Band Management C. K-pop Band management

A. In-Band Management

Which step should be taken next once a problem is resolved during a troubleshooting process? A. Update the documentation. B. Consult an FAQ. C. Run remote access software. D. Escalate the problem.

A. Update the documentation.

What are two common causes of a physical layer network connectivity problem? (Choose two.) A. a faulty Ethernet cable B. an Ethernet cable plugged into a wrong port C. an incorrect default gateway D. a monitor unplugged E. an unassigned IP address

A. a faulty Ethernet cable B. an Ethernet cable plugged into a wrong port

Which connection provides a secure CLI session with encryption to a Cisco switch? A. an SSH connection B. an AUX connection C. a console connection D. a Telnet connection

A. an SSH connection. CLI session using Secure Shell (SSH) provides enhanced security because SSH supports strong passwords and encryption during the transport of session data. The other methods support authentication but not encryption.

Which interface uses telephone lines and modems to remotely manage a router? A. auxiliary port B. console port C. SSH access D. LAN interface E. WAN interface

A. auxiliary port

Accessing the device via the console port is considered... A. In-Band Management B. Out-of-Band Management C. K-pop Band management

B. Out-of-Band Management

Method for remotely accessing a CLI session across an active network interface, including the management interface. A. Console B. SSH C. AUX port D. Ox Port

B. SSH

This troubleshooting method starts with the end-user applications A. Bottom-Up B. Top-Down C. Divide and Conquer D. Substitution E. Comparison F. Educated Guess

B. Top-Down

Used for remote management of the router using a dial-up telephone line and modem. A. Console B. SSH C. AUX port D. Ox Port

C. AUX port

The network administrator selects a layer and tests in both directions from that layer. A. Bottom-Up B. Top-Down C. Divide and Conquer D. Substitution E. Comparison F. Educated Guess

C. Divide and Conquer

The startup-config is stored in which component of memory? A. RAM B. ROM C. NVRAM D. Flash

C. NVRAM

Which interface is the default SVI on a Cisco switch? A. GigabitEthernet 0/1 B. FastEthernet 0/1 C. VLAN 1 D. VLAN 99

C. VLAN 1

What command can you use to ask the DHCP server to refresh your IP addressing configuration? A. ping B. netstat C. ipconfig /renew D. tracert E. nslookup

C. ipconfig /renew

What is NOT considered a physical layer problem? A. device power turned off or unplugged B. loose or incorrect cable C. wireless configuration D. faulty network cable E. faulty wireless access point

C. wireless configuration

This is the all-purpose break sequence used to abort DNS lookups, traceroutes, pings, and to interrupt an IOS process.

Ctrl-Shift-6

The Cisco IOS file is stored in which component of memory? A. RAM B. ROM C. NVRAM D. Flash

D. Flash

Which interface connects computers, switches, and routers for internal networking? A. auxiliary port B. console port C. SSH access D. LAN interface E. WAN interface

D. LAN interface

In the show ip protocols command, which part of the syntax is represented by ip protocols? A. a prompt B. the command C. a variable D. a keyword

D. The Keyword

Choose the correct order for the router boot up process. A. load bootstrap, load the IOS, perform POST, load the startup configuration file B. perform POST, load the IOS, load the startup configuration file, load bootstrap C. load bootstrap, perform POST, load the IOS, load the startup configuration file D. perform POST, load bootstrap, load the IOS, load the startup configuration file

D. perform POST, load bootstrap, load the IOS, load the startup-configuration file

Which IOS mode allows access to all commands and features? A. global configuration mode B. interface subconfiguration mode C. line console subconfiguration mode D. privileged EXEC mode E. user EXEC mode

D. privileged EXEC mode

This approach is also called the shoot-from-the-hip troubleshooting approach. A. Bottom-Up B. Top-Down C. Divide and Conquer D. Substitution E. Comparison F. Educated Guess

F. Educated Guess

Which IOS mode are you in if the Switch(config)# prompt is displayed?

Global Configuration mode (Global Config)

What is the difference between the terms keyword and argument in the IOS command structure?

Keyword - This is a specific parameter defined in the operating system (show running-config: in this example "running-config" is a keyword. Argument - This is not predefined; it is a value or variable defined by the user, like 192.168.10.5 or a hostname.

A console cable is also referred to by what other name?

Rollover cable

A technician is setting up a network in a new room. What is the best device to use to connect the PCs to each other and to the rest of the LAN?

Switch A gateway is a router used to interconnect networks and is not necessary in this situation. A hub does not segment a network and allows collisions to take place on the network segment. A switch will interconnect all the devices in a LAN.

When first connecting to a switch to configure it for the first time, you should answer "no" to the initial dialog question. After answering "no", what is the prompt?

Switch>

What is one difference between using Telnet or SSH to connect to a network device for management purposes?

Telnet sends the username and password in plain text. SSH encrypts them both.

From global configuration mode, an administrator is attempting to create a message-of-the-day banner by using the command - banner motd Authorized access only! Violators will be prosecuted!. An error message appeared. When users log in using Telnet, the banner does not appear correctly. What is the problem?

The admin failed to use a delimiter before and after the warning S1(config)# banner motd #Authorized access only! Violators will be prosecuted!#

What is the effect of using the Router# copy running-config startup-config command on a router?

The command copy running-config startup-config copies the running-configuration file from RAM into NVRAM and saves it as the startup-configuration file. Since NVRAM is non-volatile memory it will be able to retain the configuration details when the router is powered off.

True or false? After a problem is resolved, there is no further action you need to take.

The correct answer is false. When the problem is resolved, be sure to update all documentation accordingly for future reference.

What happens when the transport input ssh command is entered on the switch vty lines?

This configuration prevents non-SSH (such as Telnet) connections and limits the switch to accept only SSH connections (which is encrypted).

True or false? Switches typically provide LAN connectivity and routers interconnect local networks.

True

When choosing a switch, there are a number of factors to consider. Explain each: Type of ports Speed required Expandability Manageability

Type of ports - How many and what type of ports are required Speed required - 100 Mbps, 1 Gbps...what is required for your network Expandability - Modular devices have expansion slots that provide the flexibility to add new modules as required. Manageability - A managed switch that uses a Cisco operating system enables control over individual ports or over the switch as a whole. Controls include the ability to change the settings for a device, add port security, and monitor performance. Cost (SJK)

Which IOS mode are you in if the Switch> prompt is displayed?

User Exec mode