RG: Ch 2: Networking Flashcards
Which of the following is a form of ad hoc WLAN?
A. WAN
B. MAN
C. PAN
D. WMN
D. WMN
Wireless mesh networks (WMN) are a form of an ad hoc WLAN that often consist of mesh clients, mesh routers, and gateways. A personal area network (PAN) is a LAN created by personal devices. A wide area network (WAN) is a collection of two or more LANs, typically connected by routers and dedicated leased lines. Occasionally, a WAN will be referenced as a metropolitan area network (MAN) when it is confined to a certain geographic area, such as a university campus or city.
Which type of server provides automatic IP configurations?
A. HTTP
B. DNS
C. DHCP
D. SQL
C. DHCP
DHCP servers provide automatic IP configurations. DNS servers resolve IP addresses to hostnames. HTTP servers are web servers. SQL is a database server.
Which device operates at layer 2?
A. Router
B. Switch
C. Repeater
D. Hub
B. Switch
Switches operate at layer 2. Routers operate at layer 3. Repeaters and hubs operate at layer 1.
Which the following uses port 22?
A. FTP
B. SSH
C. Telnet
D. POP3
B. SSH
SSH uses port 22, POP3 uses port 110, FTP uses ports 20 and 21, and Telnet uses port 23.
Which of the following delivers an upload speed equal to the download speed?
A. SDSL
B. VDSL
C. VHDSL
D. RADSL
A. SDSL
Symmetric DSL (SDSL) offers an upload equal to the download speed. The other versions all have slower upload speed than download speed.
Which of the following is a Class C address?
A. 192.168.5.5
B. 10.6.6.3
C. 172.6.8.9
D. 224.69.3.2
A. 192.168.5.5
The Class C range is 192–223. The class A range is 1–126. The class B range is 128–191. The 224 range is for multicasting.
Which of the following is a Class A address?
A. 192.168.5.5
B. 10.6.6.3
C. 172.6.8.9
D. 201.69.3.2
B. 10.6.6.3
The Class A range is 1–126. The class B range is 128–191. The Class C range is 192–223.
Which of the following is a collection of two or more LANs, typically connected by routers and dedicated leased lines?
A. WAN
B. MAN
C. PAN
D. WMN
B. MAN
Metropolitan area network (MAN) is the term occasionally used for a WAN that is confined to a certain geographic area, such as a university campus or city. A personal area network (PAN) is a LAN created by personal devices. A wide area network (WAN) is a collection of two or more LANs, typically connected by routers and dedicated leased lines. Wireless mesh networks (WMN) are a form of an ad hoc WLAN that often consist of mesh clients, mesh routers, and gateways.
Which of the following is used to attach media connectors to the ends of cables?
A. Crimper
B. Cable stripper
C. Multimeter
D. Tone generator
A. Crimper
Wire crimpers look like pliers but are used to attach media connectors to the ends of cables. A cable stripper is used to remove the outer covering of the cable to get to the wire pairs within. A multimeter combines a number of tools into one. There can be slight variations, but a multimeter always includes a voltmeter, an ohmmeter, and an ammeter (and is sometimes called VOM as an acronym). A toner probe has two parts: the tone generator (called the toner) and the tone locator (called the probe). The toner sends the tone, and at the other end of the cable, the probe receives the toner’s signal. This tool makes it easier to find the beginning and end of a cable.
Which of the following is an area where you can place a public server for access by people you might not trust otherwise?
A. NAT
B. DMZ
C. Intranet
D. Internet
B. DMZ
A demilitarized zone (DMZ) is an area where you can place a public server for access by people you might not trust otherwise. NAT is a service that maps private IP addresses to public IP addresses. The intranet is the internal network that should be protected. The Internet is the untrusted public network.
Which type of server is a database server?
A. HTTP
B. DNS
C. DHCP
D. SQL
D. SQL
A SQL server is a database server. DNS servers resolve IP addresses to hostnames. HTTP servers are web servers. DHCP servers provide automatic IP configurations.
Which of the following has the largest cell size?
A. 802.11a
B. 802.11b
C. 802.11g
D. 802.11
D. 802.11
802.11g has a distance that is the cell size of 125 ft. The others have a distance of 115 ft.
When personal devices include networking capabilities and can communicate directly with one another, they create which type of network?
A. WAN
B. MAN
C. PAN
D. WMN
C. PAN
A personal area network (PAN) is a LAN created by personal devices. A wide area network (WAN) is a collection of two or more LANs, typically connected by routers and dedicated leased lines. Occasionally, a WAN will be referenced as a metropolitan area network (MAN) when it is confined to a certain geographic area, such as a university campus or city. Wireless mesh networks (WMN) are a form of an ad hoc WLAN that often consist of mesh clients, mesh routers, and gateways.
Which of the following is a Class B address?
A. 192.168.5.5
B. 10.6.6.3
C. 172.6.8.9
D. 201.69.3.2
C. 172.6.8.9
The Class B range is 128–191. The class A range is 1–126. The Class C range is 192–223.
Which type of server resolves IP addresses to hostnames?
A. HTTP
B. DNS
C. DHCP
D. SQL
B. DNS
DNS servers resolve IP addresses to hostnames. HTTP servers are web servers. DHCP servers provide automatic IP configurations. SQL is a database server.
