A+ Answers of the following Questions

1. (TCO 8) RAID _____ uses disk striping and stores error-correcting information, but the information is only written to one disk in the array. (Points : 5)
level 3
level 4
level 5
level 6


2. (TCO 8) _____ RAID implements fault tolerance through the server's operating system. (Points : 5)
Hardware
Virtual
Software
Physical


3. (TCO 9) _____ was developed by IBM and the National Security Agency in cooperation with the National Bureau of Standards (now called the National Institute of Standards and Technology) as an encryption technique using a secret key between the communicating stations. (Points : 5)
AES
DES
RC4
Twofish

1. (TCO 9) _____ is a comprehensive set of security features that monitors and manages a server and its clients. (Points : 5)
NAP
UAC
DMZ
IPsec


2. (TCO 9) _____ enable an account or group to perform predefined tasks. (Points : 5)
Account audits
Account locks
Account logs
User rights

3. (TCO 5) The _____ logs relate to how programs are operating and are typically used by application or system programmers. (Points : 5)
admin
operational
analytic
debug


4. (TCO 6) You can poll the presence of another TCP/IP computer from the Windows Server 2008 or Windows Vista Command Prompt window by typing _____ and the IP address or computer name of the other computer. (Points : 5)
netstat
ping
ipconfig
expand

1. (TCO1) The Central Office is the place: (Points : 5)

Where the operator makes connections.
Where all ISDN capabilities begin.
Where calls from subscribers are routed.
To connect the ADSL lines.

2. (TCO2) These companies own the network infrastructure used to deliver traditional phone service in a local area such as a city or country. They sell voice services on landline connections like T1s and POTS. (Points : 5)

TSPs
Cable Companies
IXC
ILECs

3. (TCO3) It is the common American PSTN's public safety protocol for emergency situation. It is required for wireless voice carriers to provide emergency service as well as accurate location information. However, this service is not handled by VoIP protocols. (Points : 5)

Operational feasibility service
E911
Dispatch service
Asterisk Emergency Portal (AEP)

1. (TCO4) These are facility connections from the phone company switch to the residential analog telephones; or the term used for delivering dial-tone to a group of phones. (Points : 5)

Tip-ring
Lines
Trunks
Call links

2. (TCO5) Which of the following enforces system policy, records instances of abuse for forensic and litigation purposes, encrypts, protects sensitive information, and bolsters a VoIP network against exploitive attacks and viruses? (Points : 5)

Improved Customer Service
Network Security
Faster access to information
Reduced delivery times

3. (TCO6) VoIP packets are almost always UDP and its IP header may include a flag that allows router and switches to treat it with a certain priority based on sensitivity to delay. What is this flag called? (Points : 5)

TCP Push Flag
DLCI
Type of Service Flag
MPLS Priority Routing Flag

1. (TCO7) Along with CTI and ACD, this is a PBX supported application where multiple phones, telephony processes, phone operators, IVR, complex dial-plan, and hunt groups, run in a confined space and take information from customers, then, facilitate a response over the phone. (Points : 5)

CallCenter
Auto Attendant
Intercom calling
Conferencing

2. (TCO10) Among the codecs used for VoIP networks, this codec provides a toll-grade telephone audio signal, has a 64kbps PCM algorithm, low processing intensity, and has 1280 Voice bits per packet. (Points : 5)

G.722
G.711
GSM
G.729

3. (TCO11) This layer organizes and synchronizes dialogues between presentation entities in the OSI 7-Layer Communications Model, (Points : 5)

Data Link Layer
Transport Layer
Session Layer
Address of Destination

4. (TCO12) A QoS mechanism, it is similar to ATM and performs both switching and bandwidth reservation before sending ‘tagged’ packets. With this technology, the fixed-bandwidth media channels are maintained for VoIP at very high speeds. What is this protocol called? (Points : 5)

Frame relay
OSPF
MPLS