What is the T-568B patch cable pin-out?

What is the T-568B patch cable pin-out?

• BR-g-O-B-b-o-G-br
• o-O-g-B-b-G-br-BR
• br-BR-G-o-O-g-b-B
• g-G-o-B-b-O-br-BR 

EXPLANATION

Straight-Through Ethernet Cable Pin Out for T568A

RJ45 Pin #	Wire Color (T568B)	Wire Diagram (T568B)	10Base-T Signal 100Base-TX Signal	1000Base-T Signal
1	White/Orange		Transmit+	BI_DA+
2	Orange		Transmit-	BI_DA-
3	White/Green		Receive+	BI_DB+
4	Blue		Unused	BI_DC+
5	White/Blue		Unused	BI_DC-
6	Green		Receive-	BI_DB-
7	White/Brown		Unused	BI_DD+
8	Brown		Unused	BI_DD-

 

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is the observation that, over the history of computing hardware, the number of transistors in a dense integrated circuit has doubled approximately every _____.

is the observation that, over the history of computing hardware, the number of transistors in a dense integrated circuit has doubled approximately every _____.

• Three Years
• Five Years
• Two Years
• One Year 

In 1965, Gordon Moore, one of the pioneers of integrated circuits, predicted that the number of transistors that could be fit on one chip would double every year. In 1975, he revised his estimate to doubling every two years. This prediction is known as Moore's Law.
It turns out that other important measurements have also shown roughly the same doubling behavior, such as processor speed and the amount of memory that fits in a computer. Doubling hardware speed improves the size of problems that you can efficiently handle.
The importance of Moore's Law isn't just that computers get bigger and faster over time; it's that engineers can predict how much bigger and faster, which helps them plan the software and hardware development projects to start today, for use five years from now.
That huge computer you sa

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Moore's Law is the observation that, over the history of computing hardware, the number of transistors in a dense integrated circuit will double approximately every _____.

Moore's Law is the observation that, over the history of computing hardware, the number of transistors in a dense integrated circuit will double approximately every _____.

• Two Years
• Five Years
• Three Years
• One Year 

EXPLANATION

In 1965, Gordon Moore, one of the pioneers of integrated circuits, predicted that the number of transistors that could be fit on one chip would double every year. In 1975, he revised his estimate to doubling every two years. This prediction is known as Moore's Law.
It turns out that other important measurements have also shown roughly the same doubling behavior, such as processor speed and the amount of memory that fits in a computer. Doubling hardware speed improves the size of problems that you can efficiently handle.
The importance of Moore's Law isn't just that computers get bigger and faster over time; it's that engineers can predict how much bigger and faster, which helps them plan the software and hardware development projects to start today, for use five years from now.

 

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When it comes to user interfaces, what does CLI stand for?

When it comes to user interfaces, what does CLI stand for?

• Command Link Infrustructure
• Command Line Interface
• Cosmic Line Interface
• Cisco Like Interface 

EXPLANATION

Command line interface (CLI) is a text-based interface that is used to operate software and operating systems while allowing the user to respond to visual prompts by typing single commands into the interface and receiving a reply in the same way.
CLI is quite different from the graphical user interface (GUI) that is presently being used in the latest operating systems.

CLI is an older method for interacting with applications and operating systems and is used to perform specific tasks required by users. CLI is a text-based interface, unlike the GUI, which uses graphical options that enable the user to interact with the operating system and applications.
CLI allows a user to perform tasks by entering commands. Its working mechanism is very easy, but it is not user friendly. Users enter the specific command, press “Enter”, and then wait for a response. After receiving the command, the CLI processes it accordingly and shows the output/result on the same screen; command line interpreter is used for this purpose.
CLI was introduced with the teletypewriter machine. This system was based on batched processing. Modern computers support CLI, batch processing and GUI in one interface.
In order to best make use of CLI, a user must be able to enter a bundle of commands (one by one) quickly. There are many applications (mono-processing systems) that still use CLI for their operators. In addition, some programming languages, such as Forth, Python and BASIC, offer CLI. Command line interpreter is used to implement the text-based interface.
Another feature of CLI is command prompt, which is employed as a sequence of characters used in the user interface, or shell. Command prompt is used to notify users that CLI is ready to accept commands.
MS-DOS is the best example of CLI.

 

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You have an IPv6 subnet that is on a switch connected to a Cisco router. The clients on the subnets attached to the router aren't getting IPv6 addresses from auto config. What is the most likely cause of this issue?

You have an IPv6 subnet that is on a switch connected to a Cisco router. The clients on the subnets attached to the router aren't getting IPv6 addresses from auto config. What is the most likely cause of this issue?

• DHCP relay is not working
• DHCP is not working
• The DNS server is down
• Missing "ipv6 unicast routing" command 

EXPLANATION

Cisco routers do not have IPv6 routing enabled by default. To configure IPv6 on a Cisco routers, you need to do two things:

1. enable IPv6 routing on a Cisco router using the ipv6 unicast-routing global configuration command. This command globally enables IPv6 and must be the first command executed on the router.
2. configure the IPv6 global unicast address on an interface using the ipv6 address address/prefix-length [eui-64] command. If you omit omit the eui-64 parameter, you will need to configure the entire address manually. After you enter this command, the link local address will be automatically derived.

Here is an IPv6 configuration example:

R1(config)#ipv6 unicast-routing
R1(config)#int Gi0/0
R1(config-if)#ipv6 address 2001:0BB9:AABB:1234::/64 eui-64

We can verify that the IPv6 address has been configured by using the show ipv6 interface Gi0/0 command:

R1#show ipv6 interface Gi0/0
GigabitEthernet0/0 is up, line protocol is up
  IPv6 is enabled, link-local address is FE80::201:42FF:FE65:3E01
  No Virtual link-local address(es):
  Global unicast address(es):
    2001:BB9:AABB:1234:201:42FF:FE65:3E01, subnet is 2001:BB9:AABB:1234::/64 [EUI]
  Joined group address(es):
    FF02::1
    FF02::2
    FF02::1:FF65:3E01
  MTU is 1500 bytes
  ....

 

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