321 Test 3 (Quizzes)

Which of the following is a private IP address range?

10.x.x.x

In the mask 255.255.255.0, how many 1s are there?

24

If your subnet part is 8 bots long, you can have ___ subnets

254

deciding what interface and to what device to send the packer back out is step ___ in the routing process

3

A mask has ___ bits

32

If the subnet ID in an IPv6 address is 32 bits, how long is the routing prefix?

32

compared to the internet, carrier WANs ___

?

the DNS ____ record is for the host name's ___ address

A; IPv4

to use a leased line, the customer must have a ___ at each site

CSU/DSU

which of the following is more widely used?

ESP

four-way closes use ___ segments

FIN

SA protections are applied in the ___

IPsec protection

which of the following is most expensive to use?

MPLS

___ is the process of presenting external IP addresses that are different from internal IP addresses used within the firm

NAT

an abrupt close uses a ___ segment

RST

Which is less expensive to implement?

SSL/TLS

IPsec is used for ___ VPNs

Site-to-Site and Remote Access. both A and B

In SNMP. the manager communicates directly with a ___

agent

WAN optimization devices are deployed ________.

at the ends of leased lines

a company has a domain name. what else must it have before is can make a website available to the public?

both A and B - a DNS server to host it's domain name - the website itself

which of the following affects what cellular throughput an individual user will receive?

both A and B - being in a moving car - being far from the cellsite

An MTSO ____

both A and B - controls cellsites in a cellular system - links mobile users to wired telephone customers

How does carrier ethernet differ from traditional ethernet?

both A and B - it is offered by carriers instead of being installed and managed by the company using it - it is for MAN and WAN services

Why is Carrier Ethernet popular?

both A and B - it uses familiar tech - is has attractive prices

traffic shaping reduces traffic by ___

both A and B - preventing certain undesirable traffic from entering the network - limiting the amount of certain undesirable traffic entering the network

In ADSL, the customer should have _____

both A and B - splitters -an ADSL modem

DSL offers

both A and B - voice transmission - data transmission

NAT

both A and B -allows a firm to have more internal IP addresses -provides some security

The domain name system ___

both A and B -is a way to find a host's IP address is your computer only knows the hosts's host name -is a general naming system for the internet

Which of the following receives rights of way for transmission beyond sights?

carriers

For their transmission medium, cable television companies primarily use ________.

coaxial cable

The first step in the routing process involves

comparing the packet's destination IP address to all rows

which of the following does the carrier NOT own?

customer premises equipment

two way amplifiers are needed for cable ___ service

data

compared to ADSL service, cable modem traditionally has been ____

faster and more expensive

In IPv6 addresses, ____ are seperated by ____

fields, colons

One-bit fields are called ____ fields and if it is not set, this means its value is ____

flag, 0

if a router receives 20 packets in a row going to the same destination IP address, the standard calls for it to ___

go through all three steps for each

for human reading, IPv6 addresses are written in ___ notation

hexadecimal

leaseline

high speed point to point, always on connection

which is NOT one of the three parts of a public IPv6 unicast address?

host part

router ports are called ___

interfaces

If no other row matches, the router will select the ___ row as its best match

last

A WAN is the network that ____

links different sites together

the PSTN core is organized as a _____

modified hierarchy

A border router connects different IP ___ and an internal router connects different IP ____

networks, subnets

In the mask /14, how many 1s are there? (8 / 16 / 24)

none of the above

What transmission medium do ALL DSL services use?

one-pair voice-grade UTP

Dynamic ________ protocols allow routers to transmit routing table information to one another.

routing

In the routing table, a ___ represents a route for a group of IP addresses

row

corporations wish to have ___ domain names

second-level

the second step in the routing process involves _____

selecting the nest-match row

in SNMP, companies are often reluctant to use ___ commands because of security dangers

set

Ping is for ___ messages

supervisory

for cost reasons, you should ____ where you can, _____ where you must

switch, route

an advantage of using DHCP to configure clients is that ___

the configuration information will be up-to-date

in a telephone system, the lines that connect customers to the nearest switch are called _____

the local loop

".com" is a ____

top-level domain

TCP/IP standards are at the ___

transport layer

In the IPv4 address 1.2.3.4, what is the network part?

we cannot say

which is a problem with IPv4 addresses?

we have run out of them

the difference between

which one is the UTP