Which type of network is most vulnerable to intrusion?
Answer : B
Insecure Wi-Fi is the easiest way for people to access your home network, leech your internet, and cause you serious headaches with more malicious behavior.
Attenuation in a wireless network signal is a result of:
Answer : B
Solid objects greatly attenuate (reduce) Wi-Fi radio signals, so clear line of sight is best.
Which type of network covers the broadest area?
Answer : A
A wide area network (WAN) is a network that covers a broad area (i.e., any telecommunications network that links across metropolitan, regional, national or international boundaries) using leased telecommunication lines.
In local area network (LAN) topologies, the primary media access methods are: (Choose two.)
Answer : AD
Media contention occurs when two or more network devices have data to send at the same time. Because multiple devices cannot talk on the network simultaneously, some type of method must be used to allow one device access to the network media at a time. This is done in two main ways: carrier sense multiple access collision detect (CSMA/CD) and token passing.
In a physical star topology, the central device is referred to as a:
Answer : D
In local area networks with a star topology, each network host is connected to a central hub with a point-to-point connection.
Which technology can you use to extend an internal network across shared or public networks?
Answer : D
VPN is a network that is constructed by using public wires "" usually the Internet "" to connect to a private network, such as a company's internal network.
Which two are published IEEE 802.11 wireless transmission standards? (Choose two.)
Answer : BE
The 802.11 family consists of a series of half-duplex over-the-air modulation techniques that use the same basic protocol. 802.11-1997 was the first wireless networking standard in the family, but 802.11b was the first widely accepted one, followed by 802.11a, 802.11g, 802.11n, and 802.11ac.
What happens when an 802.11b node starts broadcasting within the range of an 802.llg access point?
Answer : B
802.11g hardware is fully backward compatible with 802.11b hardware.
Which technology provides the highest bit rate?
Answer : C
A DS3 line (sometimes also referred to as T3) is a dedicated, high bandwidth, fiber circuit with a speed of 45 Mbps.
Incorrect:
Not A: T1, 1.544Mbps -
Not B: E1, 2.048Mbps -
Not D: SDN 30B+1D (all 64K) ~ E1: 1.930Mbps
A VPN is a/an:
Answer : A
VPN is a network that is constructed by using public wires "" usually the Internet "" to connect to a private network, such as a company's internal network.
There are a number of systems that enable you to create networks using the Internet as the medium for transporting data. These systems use encryption and other security mechanisms to ensure that only authorized users can access the network and that the data cannot be intercepted.
Which of the following determines the media access method that is used in a network?
Answer : D
Which wireless authentication method provides the highest level of security?
Answer : C
WPA aims to provide stronger wireless data encryption than WEP.
Wi-Fi Protected Access (WPA) is a security protocol and security certification program developed by the Wi-Fi Alliance to secure wireless computer networks.
The topology of a local area network (LAN) is defined by the:
Answer : B
Network topology is the arrangement of the various elements (links, nodes, etc.) of a computer network. Essentially, it is the topological structure of a network and may be depicted physically or logically.
The maximum throughput of an 802.llg network is:
Answer : D
The 802.11g standard for wireless networking supports a maximum bandwidth of 54 Mbps.
A node within a local area network (LAN) must have a network interface device and a:
Answer : C
In network addressing, the host address, or the host ID portion of an IP address, is the portion of the address used to identify hosts (any device requiring a
Network Interface Card, such as a PC or networked printer) on the network.
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