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