Chapter 5: Confirguing Network Addressing and Internet Connections

A network technician is configuring hosts to request IP configuration from a server. What protocol is the technician configuring?

DHCP

A company hires a network technician who is reviewing the network setup documentation. The technician sees that the company has fiber optic cable running all the way up to the building. This represents what type of connection?

FTTP

What does a virtual private network (VPN) do?

It enables hosts to connect to the LAN from locations other than the site by connecting to the local network via a secure remote access server.

What does a mail exchange (MX) record do?

It identified an email server for the domain so that other servers can send messages to it.

What is a network firewall?

It is a software or hardware device that protects a network segment or individual host by filtering packets to an access control list.

What is a Dynamic Host Configuration Protocol (DHCP) scope?

It is the range of addresses that a DHCP server can offer to the client hosts in a particular subnet.

What is a 'fiber to the curb (FTTC)'?

Some sort of copper wiring to the customer premises while extending the fiber link to a communications cabinet servicing multiple subscribers.

A network technician is purchasing a digital subscriber line (DSL) service for a business that transfers large amounts of data back and forth between branches. What is the best connection type for the business?

Symmetric DSL

A network technician is setting static IPv4 addresses on servers. Which settings would be considered optional for ensuring proper communications within a local area network? (Select all that apply.)

-Gateway - Alternate DNS

An application uses Transmission Control Protocol (TCP) as it requires data to make it to the destination 100% intact. Which of the following are functions of this protocol? (Select all that apply.)

-Uses SYN/ACK packets. -Uses negative acknowledgment. -Uses FIN.

What is a virtual LAN (VLAN)?

A logical network segment comprising a broadcast domain established using a feature of managed switches to assign each port a VLAN ID.

HyperText Transfer Protocol Secure (HTTPS)

A protocol used to deliver web pages and other resources. Uses encryption to authenticate the server and protect the information.

What is a router?

An intermediate system working at the network layer capable of forwarding packets around logical networks of different layer 1 and layer 2 types.

A network technician is purchasing cellular phones for people who are travelling to a rural area and wants to make sure they will work with the most networks, as the areas do not have the latest cellular technology. What type of phones will help the technician accomplish this?

GSM

A networking student is learning about IP addressing and discovers which of the following facts are NOT true regarding IPv6?

It's express in dotted decimal notation

An application developer wants to ensure packets arrive at the destination in the correct order and none are lost when an application communicates across the network. Which protocol will the application developer use?

TCP

The difference between the 'user datagram protocol (UDP)' and the 'transmission control protocol (TCP)'.

The UDP is faster than the TCP and comes with less of a transmission overhead because it does not need to send extra information to establish reliable connections.

A network technician must allow employee computers to securely connect to the corporate network from alternate locations. What is the best method for the technician to use?

VPN

A networking student is learning about IP addressing and discovers which of the following facts are NOT true regarding IPv6?

-A (Address Record) -AAAA( Resource record on a DNS server)

Secure Shell (SSH)

A protocol that accesses the command-line interface of a computer from across the network and uses encryption to authenticate the server and user and protect the information.

What does the 'transmission control protocol (TCP)' do?

It can identify and recover from lost or out-of-order packets. Failing to receive a packet or processing it incorrectly can cause serious data errors.

What does a 'fiber to the premises (FTTP)' internet connection mean?

The service provider's fiber optic cable runs all the way to the customer's building.

What is an 'optical network terminal (ONT)'?

A device that converts between optical and electrical signaling deployed to facilitate full fiber internet connection types.