MOD3 Exam Flashcards
A Gigabit Ethernet Switch runs at ______ Mbps?
1000
Name 2 things that you can implement on a Managed Switch to improve Security?
Port Security – Ports can be mapped to only accept traffic from specific MAC Addresses.
Physical Security – Keep Network Hardware protected in a locked room or rack.
Password Security – Change default passwords to a complex (Not Default) password, never use blank passwords.
Secure Access – Use SSH to remotely access Switches.
Use SNMP3 – To remotely manage Switches
Hardware Redundancy – Adding redundancy such as extra power supplies that address single points of failure.
A Layer 3 Switch typically routes traffic quicker than a traditional Router?
True
False
True
The fundamental difference between a router and a Layer 3 Switch is that Layer 3 Switches have optimized hardware to pass data as fast as Layer 2 Switches, yet they make decisions on how to transmit traffic at Layer 3, just like a Router. Within the LAN environment, a Layer 3 Switch is usually faster than a Router because it is built on Switching hardware.
Briefly explain the difference between a Hub & a Switch?
- Hubs lack any form of intelligence and simply repeat electrical/optical inputs to other Ports.*
- Switches keep track of MAC Addresses and intelligently forwards data to Ports associated with the Destination MAC Address.*
Both Hubs and Switches connect Computers to a LAN.
A Switch has 24 Ports. You create 4 VLANs on the Switch. What’s the minimum number of ports that can be in anny of the VLANs?
4
12
2
6
2
Briefly explain concept of Hardware Redundancy and apply the concept to ensure that a Network will continue to operate even if the Power Supply in a Switch fails?
Hardware Redundancy provides Fault Tolerance.
If a Switch has a separate power supply (a redundant power supply), it will continue to operate even if the primary power supply fails.
Briefly explain why the 2nd Ethernet port on any Router is typically named E01?
Computers and Networking equipment understand Binary Data, 0s and 1s.
So most Computer numbering logically begins with 0.
Switches and Routers?
Connects Computers to a LAN and allows Data to move between LANs
Connects LANs together using MAC Addressing
Switch = Connectins LANs together using MAC Addressing Router = Connects Computers to a LAN and allows Data to move between LANs
Layer 3 Switches can separate Broadcast Domains?
True
False
True
Layer 3 Switches works as a Router and a Router creates separate Broadcast Domains.
Briefly define the difference between Static Route and Dynamic Route?
Static Routes require Network Administrators to manually create, configure, assign.
Dynamic Routes are automatically created, configured, assigned through Routing Protocols.
Given the following Routing Table:
IPv4 Route Table
—————————————————————————–
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 192.168.10.254 192.168.10.66 25
127.0.0.0 255.0.0.0 127.0.0.1 Loopback 331
127.0.0.1 255.255.255.255 127.0.0.1 Loopback 331
172.16.0.0 255.255.0.0 On-Link 172.16.0.01 281
192.168.10.0 255.255.255.0 On-Link 192.168.10.66 281
An IP Packet with a destination address of 172.18.5.5 be forwarded to what Interface?
Since 172.18.5.5 doesn’t fall within any of the ranges on the Routing Table, it will go through the Default Route 0.0.0.0.
192.168.10.66 this is the Interface associated with the default route 0.0.0.0.
Name an example of a Dynamic Routing Protocol?
RIPv2/OSPF
A Router includes a listing of multiple routes to different Subnets in the Network. What route will it take to a Subnet that isn’t listed?
Directly Connected Route
Dynamic Route
Static Route
Default Route
Default Route
A Router will use it’s Default Route for any Unknown Routes, that is, it will forward traffic to an interface designated as the default or sometimes called the default gateway or gateway of last resort. This route is typically designated as 0.0.0.0.
You can use Windows Server 2008 (Or Windows Server 2016) as a Router using Built-In Services?
True
False
True
Windows Server supports Routing and Remote Access Services (RRAS), which allows the Server to be configured as a Router.
Briefly define the term: “Directly Connected Route”?
It’s the Routers Physical Interface that’s part of the Subnet.
A Directly Connected Route is a route where the Router has a Physical Interface that is part of the Subnet (Is a Host) on that Subnetwork. Typically that interface will be serving as the Default Gateway for the given Subnetwork.
A Computer needs to send traffic to another network. It will forward the traffic to it’s ________?
Router/Default Gateway
Computers must be configured with a Default Gateway, which is the interface on a Router within the same Subnet.
You want to view the Routing Table on a Windows System. What command should you use?
Route add
Print route
Route print
Show route
Route Print
A Server has been configured with a preferred DNS Server and an Alternate DNS Server. The Alternate DNS Server will be queried only when _________?
the preferred/primary DNS server doesn’t answer or is down.
What protocol is used to resolve an IP Address to a Host Name Address?
TCP
ICMP
DNS
ARP
DNS
Domain Name System (DNS) resolves IP Addresses to Host Name Addresses.
Briefly explain the term: “Fully Qualified Domain Name”?
FQDN, it’s the Complete Domain Name of a specified Computer/Host on the Internet.
It’s comprised of several elements, each of which is separated by a Period.
These elements fall into two separate components: A Hostname and a Domain Name
The Primary Name Resolution method for NetBIOS Names on IPv4 Networks is WINS?
True
False
True
WINS resolves NetBIOS Names to IP Addresses.
This is the Primary Name Resolution method for NetBIOS Names on IPv4 Networks.
On IPv6 Networks, WINS is not available and GlobalName zones can be used instead.
How can you view the NetBIOS cache on a Computer?
Enter nbstat -n at the command prompt.
Enter ipconfig /flushdns at the command prompt.
Enter ipconfig /displaydns at the command prompt.
Enter nbstat -c at the command prompt.
Enter nbstat -c at the command prompt displays the NetBIOS Cache.
nbstat -n at the command prompt shows Computers NetBIOS Names.
nbstat -c at the command prompt displays NetBIOS Cache.
ipconfig /flushdns at the command prompt clears the Cache.
ipconfig /displaydns at the command prompt will display the Host Name Cache.
Briefly explain the difference between the Host File and the Imhosts File?
The Host File is used to map Host Names to IP Addresses.
The Imhosts File is used to map NetBIOS Names to IP Addresses.
What is the default NetBT node in Windows Server 2008?
P-node
H-node
B-node
M-node
H-node
H-node is the default NetBT node in Windows Server 2008.
It combines B-node (Broadcast) and P-node (WINS) and queries WINS first.
The node can be identified by entering ipconfig /all at the command prompt and looking at the Node Type in the Output.
