Network Architecture Flashcards
Limit the amount of Broadcast Domains on a network using what?
Vlans
What device can Route multicast and unicast Signals?
Layer 3 switch/Router
Multicast is a Layer _ of IPv4 and IPv6.
3/Network layer
What is the purpose of a firewall on the edge of a network?
To screen packets according to the ACL (Access Control List).
Which of the following is used to define how much bandwidth can be used by various protocols on the network?
Traffic Shaper
(Traffic can be prioritized based on the ports used by the application sending the traffic. Delayed
traffic is stored in a buffer until the higher priority traffic has been sent.)
What allows you to authenticate remote workers who connect from offsite?
Radius, 802.1x
Which of the following provides accounting, authorization, and authentication via a centralized privileged database, as well as, challenge/response and password encryption?
TACACS+
What is the difference between RADIUS and TACACS+?
RADIUS: Encrypts only the password, combines authentication and authorization,
TACACS+: Encrypts the entire payload, seperates authentication and authorization,
How to set aside addresses in a DHCP pool as to allow certain servers to always get the same address?
Configure the reservations
After setting up a DHCP server on the LAN segment, what options should you configure in the DHCP scope, in order to allow hosts on that LAN segment using dynamic IP addresses, to be able to access the internet and internal company servers?
Default gateway, Subnet mask, DNS servers.
( To access the internet, the client computers need to be configured with an IP address with a subnet mask and the address of the router that connects the company network to the internet. To be able to resolve web page URLs to web server IP addresses, the client computers need to be configured with the address of a DNS server.)
What is the purpose of Split horizon DNS?
Mechanism for DNS servers to supply different DNS query results depending on the source of the request.
What is the MX record for DNS used for?
Mail exchange
What protocol uses label-switching routers and label edge routers to forward traffic?
MPLS
What protocol is used on a DB-9 connector?
RS-232
An F-connector is used on which of the following types of cabling?
RG6
What Ethernet Standard is for multi-mode fiber?
10GBASE-SR
1000BASE-SX
Cable Certifier result when used on cable?
The cable test will show the location of opens or shorts in the cable.
What Topology will not fail if there is an outage on a single piece of the topology? However, the computers need to wait to talk on the network to avoid congestion.
Ring
What network topology utilizes a central device with point-to-point connections to all other devices?
Star
What networking topology has a central single point of failure?
Star
What will allow a company to continue to maintain an internet presence at all sites in the event that a WAN circuit at one site goes down.
BGP (If a WAN link goes down, BGP will route data through another WAN link if redundant WAN links are available.)
How does BGP route data?
BGP routes between Autonomous systems.
What is an ASN (Autonomous System Number)
Unique number that’s available globally to identify an autonomous system.
How big is a jumbo frame?
> 1500
