You are working as a senior technician at ass4sure.com. One of the trainees asks you to clarify at
which OSI (Open Systems Interconnect) layers a packet filtering firewall operates. What will your
answer be?

Prior to crimping a connector to a UTP/STP cable, which tool will be used?

Encryption is the conversion of data into a form, called a ciphertext, that cannot be easily
understood by unauthorized people. What can vary the encryption key on a user’s session after a
set period of time?

A network administrator is troubleshooting a wireless LAN (Local Area Network) that is
experiencing trouble with interference. A scan of the wireless network reports that there are two
WAPs (Wireless Access Point) from different companies within range of the LAN (Local Area
Network). The two WAPs (Wireless Access Point) have different SSIDs (Service Set Identifier)
than the LANs (Local Area Network) WAP (Wireless Access Point), but the same channel. Also,
the WEP (Wired Equivalent Privacy) appears to be the same on all WAPs (Wireless Access
Point). What should the network administrator do to cut down on the interference of the wireless
clients on the LAN (Local Area Network)?

When the connection is created, which TCP connect scanner will be always set for normal data
traffic?

Prior to crimping a connector to a UTP/STP cable, which one of the following tools is applicable?

Dynamic Host Configuration Protocol (DHCP) is a network application protocol used by devices
(DHCP clients) to obtain configuration information for operation in an Internet Protocol network. A
new DHCP server has been implemented. A technician checks some computers’ IP addresses
and the IP addresses are not in the scope but they can reach network resources. The other
computers can obtain the IP addresses issued by the DHCP server. Why?

Wireless Application Protocol (commonly referred to as WAP) is an open international standard
forapplication layer network communications in a wireless communication environment. Which of
thefollowing would be installed on a workstation to connect to a WAP?

Which two network features will slow or limit traffic to improve the performance of other kinds of
traffic? (Select TWO).

A network administrator of a 50 machine network is receiving complaints that some users are
losingconnectivity to network services. On inspection it is discovered that the IP (Internet
Protocol) addresses for the subnet of 255.255.255.128 have been exhausted. Which of the
following explains the problem?