Data Center
What is a data center?
A data center is a physical facility that houses an organization's critical IT infrastructure
What are the 3 basic types of network cables?
Coaxial, optical fiber, and copper (ethernet)
What is the default HSRP hello and hold down timers?
hello- 3 sec
hold down- 10 sec
How do you enter configuration mode on juniper devices?
edit or configure
Why do you need vPC?
It allows you to bundle 2 different upstream devices
What is the purpose of a DMZ in your network?
The DMZ separates your internal network from the extranet and provides an additional layer of security
Name the 2 types of singlemode transceivers and the 2 types of multimode transceivers
Singlemode- LX, LR
Multimode- SX, SR
What is the purpose of FHRP?
FHRP enables redundant routers to share a single virtual IP (vIP) address as the default gateway, providing seamless failover if the active router fails
What is the juniper equivalent of show ip int br?
show interfaces terse
What is the difference between standard and extended access control list?
Standard acl filters traffic based solely on the source IP address. Extended acl filters traffic based on the source and destination IP addresses, port numbers, and protocols
What is the most common data center design in the industry?
Collapsed design (aka spine and leaf)
What is a patch panel?
Located in a server room or wiring closet, they reduce clutter by keeping your network cables neat and organized. They make troubleshooting and maintenance jobs easier.
Why would an engineer configure VRRP on a cisco router and not HSRP?
If it is a mixed environment; VRRP would need to be used as it is an open standard protocol. HSRP is cisco proprietary
What is the juniper equivalent of wr erase?
Request system zeroize
Why would you choose a nexus switch over a catalyst switch?
Nexus allows you to use vDC. vDC is not possible on catalyst switches
What are the 3 types of data centers?
Name the 2 types of fiber optic transceivers and their corresponding connector type
GBIC (SC) and SFP (LC)
What are the 2 main components of GLBP and what are they responsible for?
Active virtual gateway (AVG): responsible for the operation of the protocol, assigns all the virtual MAC addresses; master
Active virtual forwarder (AVF): responsible for forwarding packets sent to the virtual MAC address, multiple can exist in a GLBP group; backup
What 2 network protocols must be configured in juniper's "basic" configuration?
telnet and ssh
What does it mean if an etherchannel port is in a suspended state?
The ports don't have the same configuration (allowed vlans, speed & duplex, switchport mode)
What are the 6 components of an enterprise data center?
Servers, networking, power, security, monitoring, & redundancy
What is a console cable and what can they not be used for?
Console cables act as a link between a computer and a router, they cannot be used for data transfer
What is the difference between HSRP version 1 and version 2?
Version 1 supports ipv4 and version 2 supports ipv6
What is the juniper equivalent of exec-timeout and what mode can it be configured in?
set cli idle-timeout, operational mode
How do you configure load balancing using HSRP?
Configure both devices to be active on different vlans