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Networking

You set the console password, but when you display the configuration, the password doesn’t show up; it looks like this:

Ios And Security Device Manager, Networking /
Question: You set the console password, but when you display the configuration, the password doesn’t show up; it looks like this:

[A].

encrypt password

[B].

service password-encryption

[C].

service-password-encryption

[D].

exec-timeout 1 35

Answer: Option B

Explanation:

The command service password-encryption, from global configuration mode, will encrypt the passwords.

You set the console password, but when you display the configuration, the password doesn’t show up; it looks like this: Read More »

Ios And Security Device Manager, Networking

You want to totally reinitialize the router and replace the current running-config with the current startup-config. What command will you use?

Ios And Security Device Manager, Networking /
Question: You want to totally reinitialize the router and replace the current running-config with the current startup-config. What command will you use?
[A].

replace run start

[B].

copy run start

[C].

copy start run

[D].

reload

Answer: Option D

Explanation:

To completely replace the running-config with the startup-config, you must reload the router. Note : You may have picked option C, which isn’t a bad answer. Remember, though, it doesn’t replace the configuration, it appends it.

You want to totally reinitialize the router and replace the current running-config with the current startup-config. What command will you use? Read More »

Ios And Security Device Manager, Networking

You need to find the broadcast address used on a LAN on your router. What command will you type into the router from user mode to find the broadcast address?

Ios And Security Device Manager, Networking /
Question: You need to find the broadcast address used on a LAN on your router. What command will you type into the router from user mode to find the broadcast address?
[A].

show running-config

[B].

show startup-config

[C].

show interfaces

[D].

show protocols

Answer: Option C

Explanation:

The command show ip protocols will actually show you the broadcast address for each interface – too bad it isn’t a possible answer. Your best answer is show interfaces, which will provide the IP address and mask for each interface.

You need to find the broadcast address used on a LAN on your router. What command will you type into the router from user mode to find the broadcast address? Read More »

Ios And Security Device Manager, Networking

You type show running-config and get this output:

Ios And Security Device Manager, Networking /
Question: You type show running-config and get this output:

[A].

If no command has been typed in 35 seconds, the console connection will be closed.

[B].

If no router activity has been detected in 1 hour and 35 minutes, the console will be locked out.

[C].

If no commands have been typed in 1 minute and 35 seconds, the console connection will be closed.

[D].

If you’re connected to the router by a Telnet connection, input must be detected within 1 minute and 35 seconds or the connection will be closed.

Answer: Option C

Explanation:

The exec-timeout command is set in minutes and seconds.

You type show running-config and get this output: Read More »

Ios And Security Device Manager, Networking

You type Router#sh ru and receive an % ambiguous command error. Why did you receive this message?

Ios And Security Device Manager, Networking /
Question: You type Router#sh ru and receive an % ambiguous command error. Why did you receive this message?
[A].

The command requires additional options or parameters.

[B].

There is more than one show command that starts with the letters ru.

[C].

There is no show command that starts with ru.

[D].

The command is being executed from the wrong router mode.

Answer: Option B

Explanation:

The % ambiguous command error means that there is more then one possible command that starts with ru. Use a question mark to find the correct command.

You type Router#sh ru and receive an % ambiguous command error. Why did you receive this message? Read More »

Ios And Security Device Manager, Networking

You type the following command into the router and receive the following output:

Ios And Security Device Manager, Networking /
Question: You type the following command into the router and receive the following output:

[A].

You need to be in privileged mode.

[B].

You cannot have a space between serial and 0/0.

[C].

The router does not have a serial0/0 interface.

[D].

Part of the command is missing.

Answer: Option D

Explanation:

You can view the interface statistics from user mode, but the command is show interface serial 0/0.

You type the following command into the router and receive the following output: Read More »

Ios And Security Device Manager, Networking

Which of the following types of connections can use full duplex?

Internetworking, Networking /
Question: Which of the following types of connections can use full duplex?

[A].

1, 2 and 4

[B].

3 and 4

[C].

3 and 5

[D].

2, 3 and 5

Answer: Option D

Explanation:

Hubs cannot run full-duplex Ethernet. Full duplex must be used on a point-to-point connection between two devices capable of running full duplex. Switches and hosts can run full duplex between each other, but a hub can never run full duplex.

Which of the following types of connections can use full duplex? Read More »

Internetworking, Networking

Acknowledgments, sequencing, and flow control are characteristics of which OSI layer?

Internetworking, Networking /
Question: Acknowledgments, sequencing, and flow control are characteristics of which OSI layer?
[A].

Layer 2

[B].

Layer 3

[C].

Layer 4

[D].

Layer 7

Answer: Option C

Explanation:

A reliable Transport layer connection uses acknowledgments to make sure all data is transmitted and received reliably. A reliable connection is defined by a virtual circuit that uses acknowledgments, sequencing, and flow control, which are characteristics of the Transport layer (layer 4).

Acknowledgments, sequencing, and flow control are characteristics of which OSI layer? Read More »

Internetworking, Networking

Why does the data communication industry use the layered OSI reference model?

Internetworking, Networking /
Question: Why does the data communication industry use the layered OSI reference model?

[A].

1 only

[B].

1 and 4

[C].

2 and 3

[D].

3 only

Answer: Option B

Explanation:

The main advantage of a layered model is that it can allow application developers to
change aspects of a program in just one layer of the layer model’s specifications.

Advantages
of using the OSI layered model include, but are not limited to, the following:

It divides the
network communication process into smaller and simpler components, thus aiding compo-
nent development, design, and troubleshooting;

it allows multiple-vendor development
through standardization of network components;

it encourages industry standardization by
defining what functions occur at each layer of the model;

it allows various types of network
hardware and software to communicate;

and it prevents changes in one layer from affecting
other layers, so it does not hamper development.

Why does the data communication industry use the layered OSI reference model? Read More »

Internetworking, Networking