What is the meaning of line Vty 0 4?

What is the meaning of line Vty 0 4?

Virtual teletype

What is line Vty and line console?

The console port is mainly used for local system access using a console terminal. The VTY lines are the Virtual Terminal lines of the router, used solely to control inbound Telnet connections.

What is console port?

Console port is used to connect a computer directly to a router or switch and manage the router or switch since there is no display device for a router or switch . A special type of cable, known as roll over cable is used to connect the Serial/COM port of the computer to the router or switch console port.

What is the purpose of line console password?

Console password is useful on a network on which multiple people have to access to the router. The persons who are not authorized, can’t access the router. Thus it prevents unauthorized person from accessing the router.

What does Vty stand for?

Very Truly Yours

How many Vty lines are on a router?

16 VTY lines

What is the meaning of line Vty 5 15?

of-band management sessions

Why does the switch respond with startup config is not present?

The switch responds with “startup-config is not present” because the start up configuration hasn’t been saved yet. Why is the login command required? The login command is required because it makes it so the user will be prompted with a login request. without it, the user won’t be able to access the router.

Why do you enter the no shutdown command?

The no shutdown command enables an interface (brings it up). This command must be used in interface configuration mode. It is useful for new interfaces and for troubleshooting. When you’re having trouble with an interface, you may want to try a shut and no shut.

Is there an IP address assigned to VLAN 1?

VLAN 1 has a static IP address, while VLAN 2 has a dynamic IP address assigned via DHCP or PPPoE from the uplink device. You can enable the DHCP/PPPoE client multiple uplink VLAN interfaces (up to four) on the managed device; these VLANs cannot be VLAN 1.

What is Cisco console line 0?

To configure line parameters for the console port, enter the following: line con 0. The console relative line number must be 0. Virtual terminal lines are used to allow remote access to the router. A virtual terminal line is not associated with either the auxiliary or console port.

What is enable secret password?

# enable secret – it will enables a password and password encryption that based on the md5 hashing algorithm. This is is a most recommended command to supply while enabling a password to any cisco network devices.

What is logging synchronous for the console line?

“logging synchronous” prevents every logging output from immediately interrupting your console session. See command documentation: “This keeps unsolicited messages and debug output from being interspersed with solicited software output and prompts.”

What is the command for DNS lookup?

Nslookup command

Where is DNS located?

The root zone file is at the apex of a hierarchical distributed database called the Domain Name System (DNS). This database is used by almost all Internet applications to translate worldwide unique names such as www.wikipedia.org into other identifiers such as IP addresses.

How DNS works step by step?

How Does the DNS Process Work?

1. Step 1: Requesting Website Information.
2. Step 2: Contact the Recursive DNS Servers.
3. Step 3: Query the Authoritative DNS Servers.
4. Step 4: Access the DNS Record.
5. Step 5: Final DNS Step.
6. Authoritative DNS Server.
7. Recursive Nameserver.

What problem does the DNS solve?

What does the DNS solve? the problem of name resolutions. Does this through servers configured to act as name servers. The servers run DNS server software, which enables them to receive, process, and reply to requests from systems that want to resolve hostnames to IP addressess.

What is the difference between HTTP and DNS?

DNS gets you to the IP address of the first web server, and after your browser establishes a TCP/IP connection, it speaks HTTP and requests some content – typically a web page. It then establishes a new TCP/IP connection, speaks HTTP again, and requests the same content.

What is DNS and its purpose?

DNS stands for Domain Name System. The main function of DNS is to translate domain names into IP Addresses, which computers can understand. It also provides a list of mail servers which accept Emails for each domain name. This record is used to point your domain name to an IP address.

What DNS settings should I use?

Some of the most trustworthy, high-performance DNS public resolvers and their IPv4 DNS addresses include:

• Cisco OpenDNS: 208.67. 222.222 and 208.67. 220.220;
• Cloudflare 1.1. 1.1: 1.1. 1.1 and 1.0. 0.1;
• Google Public DNS: 8.8. 8.8 and 8.8. 4.4; and.
• Quad9: 9.9. 9.9 and 149.112. 112.112.

Can I use 8.8 8.8 DNS?

If you can’t (or don’t want to) do that, use your ISP’s name server and configure another, publically-available server (and, yes, 8.8. 8.8 is a valid choice) as a backup. It is always good to have more than one dns server (and, for that matter, more than one ntp server) configured – redundancy is usually good.

Which Google DNS is faster?

For the DSL connection, I found that using Google’s public DNS server is 192.2 percent faster than my ISP’s DNS server. And OpenDNS is 124.3 percent faster. (There are other public DNS servers listed in the results; you’re welcome to explore them if you wish.)

Is Google DNS slow?

Google hopes to speed up the web by resolving domains faster than the DNS servers provided by a users ISP. The response time of the DNS server is critical because a single Web page can require a number of DNS resolutions which can slow down the loading of a Web page.

Should private DNS be off?

So, if you ever run into connection issues on Wi-Fi networks, you might need to turn off the Private DNS feature in Android temporarily (or shut down any VPN apps you’re using). This shouldn’t be a problem, but improving your privacy almost always comes with a headache or two.

Is Cloudflare faster than Google?

CloudFlare was the fastest DNS for 72% of all the locations. It had an amazing low average of 4.98 ms across the globe. Google and Quad9 were close for second and third respectively. Quad9 was faster than Google in North America and Europe, but under performed in Asia / South America.