Key Terms

Before you take the exam, be certain you are familiar with the following terms:

automatic call distribution (ACD)	Network Time Protocol (NTP)
call center	out-of-band (OOB)
Centrex	private branch exchanges (PBXs)
denial-of-service (DoS) attacks	public switched telephone network (PSTN)
distributed denial-of-service (DDoS)	SAFE (Security Blueprint for Enterprise Networks)
DMZ	Secure Shell Protocol (SSH)
Enterprise Composite Network Modules (ECNM)	serialization
firewall	switches
hackers	Terminal Access Controller Access Control System Plus (TACACS+)
host-based IDS (HIDS)	three-part firewall
in-band	tie-lines
interactive voice response (IVR)	timing
intrusion detection system (IDS)	trunk
isolation LAN	Voice over ATM (VoATM)
jitter	Voice over Frame Relay (VoFR)
network IDS (NIDS)	voice over IP (VoIP)