Exam 3


WHAT TO KNOW

to ace your Comptia Network+ Certification Exam

with MOST of the type of questions you'll likely see on the test!


Net 1

Net 2

Net 3

Net 4

Net 5

Net 6

Net 7

Net 8

Net 9

Net 10



Class A
1-126

Class B
128-191

Class C
192-223



ARP-
IP and MAC addresses

WINS (LMHOSTS)-
IP and NetBIOS names

DNS (HOSTS)-
IP and domain names



DIALUP PROTOCOLS

SLIP-
NO dynamic IP addressing, NO compression, NO encryption

PPP-
dynamic IP addressing, compression and encryption



share level-
9x peer to peer

user level-
NT client/ server



Network Components



Repeaters and Hubs -
regenerate and retransmit data to all ports on the network. Repeaters and hubs do not translate or filter signals.

Bridges -
filters signals between LAN segments to reduce traffic bottlenecks

Switches -
works like bridges but passes data at higher speeds

Routers -
passes data through LANs or WANs. Not used on non-routable networks like NetBEUI.

Gateways -
translates packets through LANs or WANs so different protocols can communicate with each other



1. OSI layer responsible for mail and file transfers?
transport
data link
application


2. A protocol that functions at the network layer of the OSI model?
TCP
IP
SPX


3. A major advantage of ___ in an NT network is centralized security and administration?
user-level security
share-level security
RAID 5


4. OC-1 has a transmission rate that is close to ___ ?
T-1
T-3
ISDN


5. The maximum number of populated segments allowed in an Ethernet network?
3
4
5


6. Using the TCP/IP protocol if the destination of the packet is outside the subnet then the packet is sent to the ___?
switch
bridge
default gateway


7. Entry in DNS to identify your mail server?
IDC
TU
MX


8. Toplology which is the least expensive to install?
ring
star
bus


9. Utility which can be used to identify bottlenecks in the network?
PING
WINIPCFG
TRACERT


10. What is the first octet range for a class A IP address?
1- 126
1- 128
1- 191


11. Which topology provides for equal access to the network for all computers?
star
bus
ring


12. Using the TCP/IP protocol when is a subnet mask required?
only when connecting outside the LAN
only when using TCP/IP
for both intranet and internet usage


13. OSI level that ensures error-free delivery of packets?
data-link
network
transport


14. The IEEE specification for a token ring network?
802.3
802.5
802.6


15. RIP counts hops (or routers it encounters) as the packet travels to its destination. Another name for a hop is a ___?
interval
sequence
metric


16. A protocol that functions at the transport layer of the OSI model?
IP
IPX
SPX


17. How many bits are there in an IP address?
64
32
128


18. an easy to configure, fast, and efficient protocol recommended for small non-routable networks?
NetBEUI
TCP/IP
X.25


19. What type of troubleshooting device examines the network at the packet level?
TDR
VOM
protocol analyzer


20. Resolves domain names into IP addresses?
DHCP
DNS
WINIPCFG

Grade =
Correct answers are:




Net 1 | Net 2 | Net 3 | Net 4

Net 5 | Net 6 | Net 7 | Net 8 | Net 9 | Net 10

Any comments, suggestions, or questions about this site should be directed to aplus_omega@prodigy.net
Copyright ©1999-2003 APlus Omega Enterprises, Miami, FL USA
All Rights Reserved