Networks Final Exam REVIEW PART 2

GGC's public address of 168.28.2.98 is of what class? A B C D

B

What class is GGC's public address = 168.28.2.98? A B C D

B

What is the access method used by Ethernet? CDMA CSMA/CARP CSMA/CA CSMA/CD

CSMA/CD

You only need to send data at 95 Mbps. What is the most cost efficient cable to use? 802.11n Cat5 802.11g Cat5e

Cat5

Which of the following supports 1 Gbps speeds? 802.11n Cat5 802.11g Cat5e

Cat5e

If you select obtain IP address automatically which protocol are you using DNS DHCP POP3 SMTP

DHCP

If you get a 169.254.x.x address what is likely the issue? DNS issue email issue DHCP issue CPU failure

DHCP issue

If you get a 169.254.x.x what is likely to be the problem? DNS issue Router issue Gateway issue DHCP issue

DHCP issue

What protocol uses port 53? DNS DHCP RDP POP3

DNS

Encryption occurs at the session layer. T/F

F

IPv6 addresses are easier to learn and understand than IPv4. T/F

F

Switches are half-duplex devices T/F

F

Switches never flood all ports T/F

F

Switches never flood all the ports. T/F

F

Which of the following is the APIPA address for IPv6? ::1 FE80: FEC0: 169.254.x.x

FE80:

Which of the following is the IPv6 APIPA address? 169.254.x.x FEC0: FE80: FFFF:

FE80:

Secure Internet traffic uses which protocol? HTTP HTTPE HTTPS

HTTPS

Which of these is NOT a method to allow IPv4 and IPv6 to coexist and communicate with each other? HTTPS 6 to 4 Teredo ISTAP

HTTPS

The United States network uses which of the following IP versions: IPv4 and IPv6 IPv5 IPv6 only Neither IPv4 nor IPv6

IPv4 and IPv6

Which version of IP allows for 128bit addressing and used throughout the world today? IPv4 IPv5 IPv6 IPv7

IPv6

What layer does a router operate at?Layer 1 Layer 2 Layer 3 Layer 4

Layer 3

Which of the below is correct? MAC address = 32 bits, IP address = 32 bits MAC address = 48 bits, IP address = 64 bits MAC address = 48 bits, IP address = 32 bits

MAC address = 48 bits, IP address = 32 bits

What 48bit address is permanent in all network cards? IP address Host address Serial address Mac address

Mac address

Every IPv4 address consists of a Network ID and a host ID. MAC address and IP address DNS record and a default route No change is needed

No change is needed

APIPA is used when a system cannot communicate with the DHCP server T/F

T

Class D addresses are not normally used and reserved for multicasting. T/F

T

Subnetting is the process of dividing a single network into many segments or subnets. T/F

T

The central device of a star topology can be a switch or a hub. T/F

T

Which of the following is NOT an application layer protocol? DHCP DNS TCP HTTPS

TCP

Which protocol guarantees delivery? ARP TCP IP UDP

TCP

Which protocol is more reliable and is analogous to making a cell phone call? UDP IP DNS TCP

TCP

All routers today are HTTP enabled. TCP/IP FTP no change is needed

TCP/IP

What is the more practical networking model used today? ISO OSI TCP/IP

TCP/IP

Which of the following is NOT a Network or Internetwork layer protocol? UDP IP DNS TCP

UDP

Which protocol is connectionless and faster to setup but is less reliable? UDP IP DNS TCP

UDP

Which wireless security is recommended for a home network? WPA2 SPA WEP

WPA2

Where does a switch send broadcast packets? all ports first port last port

all ports

What command maps IP addresses to MAC addresses? ping tracert arp netstat

arp

Which protocol maintains the IP to MAC addresses arp ping netstat

arp

Quality of Service allows for which of the following: bandwidth control redundancy VLANs subnetting

bandwidth control

What class is usually used by small businesses? class A class B class C class D

class C

Which of the following is NOT a type of networks media? a. coaxial b. fiber optic c. category cable d. rj45

d. rj45

What allows for 802.11ac wave 2 to be better than previous versions of Wifi? a. MIMO b. models c. generations d.MU-MIMO

d.MU-MIMO

Which of the following allows for certain specific businesses and educational organizations to share access? internet extranet intranet

extranet

An IPv4 address is made up of: four 8-bit octets four 16-bit octets four 32- bit octet four 128-bit octet

four 8-bit octets

Routing Information Protocol (RIP) uses what type of metric? cost hops steps tracks

hops

Which device always "floods all the network ports" when it receives a data frame? nic hub switch router

hub

CSMA/CD does which of the following floods all ports never detects collisions listens to media

listens to media

What describes the 127.0.0.1 address? class A private address class B private address class C public address loopback address

loopback address

Which topology is used most frequently in today's WAN networks star ring bus mesh

mesh

Which wifi standard supports up to 600 Mbps only? n b g ac

n

Which command shows all ports and incoming connections ping netstat nslookup tracert

netstat

Dynamic routing is fault tolerant. static routing default route no change is needed

no change is needed

Encryption in the OSI model takes place at the presentation layer. application network transport no change is needed

no change is needed

The loopback address of your computer s 127.0.0.1. 10.0.0.1 192.168.1 No change is needed

no change is needed

Which layer of the OSI model is responsible for encryption, formatting and translation? application presentation session transport

presentation

What are the 2 possible types of IP addresses? fast and slow high and low IPv4 and IPv5 private and public

private and public

Which topology has each computer connected to 2 others? bus ring mesh star

ring

When communicating between different VLANs what device is needed? hub router gateway switch

router

Which of the following connects different networks together router repeater modem

router

Which layer is responsible for establishing a connection and holding on-going communications application session transport presentation

session

Which topology has one central connectivity device? bus ring mesh star

star

What device associates a MAC address to a certain port? hub router gateway switch

switch

What device do we use to create VLANs? hub router gateway switch

switch

Which device is responsible for connecting all the end devices in a network? bridge switch router

switch

TCP and UDP are the 2 primary protocols in the Transport layer. t/f

t

Which commands shows the hops or routers along a certain route? netstat tracert nslookup ping

tracert

What is the best way to lessen the possibility of collisions in a network? use hubs use routers use switches use repeaters

use switches

Which layer is responsible for sending the actual bits? 7 6 5 1

1

802.11ac can transfer up to which of the following speeds? 54 Mbps 600 Mbps 1.3 Gbps 3 Gbps

1.3 Gbps

Which private address range do "most" network administrators like to use such as the GGC network? 192.168.x.x 172.16.x.x 10.x.x.x 12.x.x.x

10.x.x.x

Which of the following is the loopback address? 127.0.0.1 0.0.0.0 255.255.255.255 128.0.0.1

127.0.0.1

IPv6 addresses consist of how many bits? 8 32 64 128

128

Which of the following is a public IP address? 10.1.1.1 172.16.1.1 192.168.1.1

178.16.1.1

At which layer of the OSI model will you find MAC addresses at? 2 3 4 5

2

SMTP uses the following port number 21 23 25 53

25

What is the default subnet mask for a class B address? 255.0.0.0 255.255.0.0 255.255.255.0 255.255.255.255

255.255.0.0

Which of the following is a default subnet mask? 255.0.0.0 255.255.0.0 255.255.255.0 255.255.255.255

255.255.255.0

Which of the following is the default subnet mask for Class D addresses? 127.0.0.1 0.0.0.0 255.255.255.255 128.0.0.1

255.255.255.255

Which OSI layer would you find the ICMP and ARP protocols? 1 2 3 4

3

What port number does DNS use? 21 25 53 443

53

A 802.11ac wireless router what speed can it maximum speed it to transfer to a 802.11n device? 54 Mbps 600 Mbps 1.3 Gps 3 Gbps

600 Mbps

Protocols HTTP and HTTPS operate at which layer? 7 6 5 1

7

What layer of the OSI model do DNS and DHCP operate at? 2 4 6 7

7

Which OSI layer does POP3 operate? 2 4 6 7

7

Which layer of the OSI does a "computer" device operate at? 7 6 3 2

7

What Wifi standard support 54Mbps and only runs at 2.4Ghz? 802.11a 802.11b 802.11g 802.11n

802.11g

MIMO, channel bonding, frame aggregation are features of which standard: ethernet fiber optic 802.11n 802.11a

802.11n

What address is a 169.254.x.x address? DHCP MAC APIPA DNS

APIPA

Which protocol resolves IP addresses to MAC addresses? IP DNS DHCP ARP

ARP