Network+ part 2

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Which of the following options transmits data over a modem? (select 3) A. POTS/PSTN B. xDSL (Digital Subscriber Line) C. cable D. T1 (T-Carrier Level 1): A. POTS/PSTN
B. xDSL (Digital Subscriber Line)
C. cable
You have purchased a cable modem and a straight-through Category 5e patch cabel from a local electronics store. You connect the cable modem to your computer via a hub which is already connected toyour computer. However, your computer is not able to recei: B. The cable modem requires a crossover cable to connect to the hub
Which of the following are required to connect an 802.3 network to an 802.11 network? A. CSU/DSU (Channel Service Unit / Data Service Unit) B. WAP C. ISDN (Integrated Service Digital Network) adapter D. PVC (Permanent Virtual Circuit): B. WAP
An employee requires remote access to the company network. The employee has access to the PSTN which supporst standard analog signaling. Which device will allow the employee to connect to the company network via remote access? A. Gateway B. Rou: D. Modem
Which of the following can be used to connect a LAN to a mainframe? A. bridge B. gateway C. transceiver D. firewall: B. gateway
You work as the network engineer at Certkiller.com. You notice that network traffic on Certkiller.com's network (TCP/IP) has increased steadily over the last few months and is beginning to affect performance. You want to reduce the impact of network traf: C. Router
On which of the following devices can NAT (Network Address Translation) be implemented? A. Hub B. Bridge C. Switch D. Firewall: D. Firewall
Which of the following Wireless standards supports a maximum speed of 54 Mbps? A. 802.11 B. 802.15 C. 802.11b D. 802.11g: D. 802.11g
Which of the following frequency bands does IEEE 802.11b use? A. 1.5 GHz B. 2.4 GHz C. 5.0 GHz D. 7.0 GHz: B. 2.4 GHz
What is the maximum transmission speed supported by IEEE 802.11b? A. 1 Mbps B. 2 Mbps C. 11 Mbps D. 54 Mbps: C. 11 Mbps
How can the range of an 802.11b wireless access point be increased? A. Lower the output power C. Remove any external antennas and use the internal one D. Change the transmitting frequency to the 5 GHz range: B. Install an external antenna
Which of the following antenna types is omnidirectional? A. Vertical B. Dipole C. Yagi D. Parabolic: A. Vertical
Which of the following enviroments is BEST suited for using an omindirectional antenna? A. Closed office areas with walls B. Open office areas with cubicles C. Hallways D. Outdoors: D. Outdoors
You work as a network administrator. You are troubleshooting a wireless LAN that is experiencing interference. A scan of the wireless network reports that there are two other WAPs from different companies within range of the LAN. The two foreign WAPs hav: C. Chang the LAN WAP channel to a different channel than that of two foreign WAPs
Which one of the following will affect the range of an 802.11b WAP? A. 5 GHz interference B. High numbers of wireless users C. 900 MHz interference D. A long length of antenna extension cable: D. A long length of antenna extension cable
Which 3 bytes of MAC address F2A123BCD341 designates the unique station identifier? A. F2-A1-23 B. A1-23-BC C. 23-BC-D3 D. BC-D3-41: D. BC-D3-41
Which 3 bytes of MAC address F2-A1-23-BC-D3-41 designates the OUI (Organizationally Unique Identifier)? A. F2-A1-23 B. A1-23-BC C. 23-BC-D3 D. BC-D3-41: A. F2-A1-23
At whichlayers of the OSI (Open Systems Interconnect) model does a packet filtering firewall operate? A. Network and Data Link Layers B. Network and Transport Layers. C. Transport and Session Layers D. Physical and Data Link Layers.: B. Network and Transport Layers.
At which of following OSI layers are digital data converted into electronic signals to be put on a wire? A. The Physical Layer B. The Transport Layer C. The Data Link Layer D. The Presentation Layer: A. The Physical Layer
At which of the following OSI layers does a router function? A. The Physical Layer B. The Data Link Layer C. The Network Layer D. The Application Layer: C. The Network Layer
Which of the following OSI layers is responsible for formatting and code conversations? A. The Transport Layer B. The Data Link Layer C. The Application Layer D. The Presentation Layer: D. The Presentation Layer
Which of the following networking devices operates at the upper layers of the OSI and connects networks with different architectures? A. Router B. Firewall C. Modem D. Gateway: D. Gateway
Which of the following are classified as layer 2 devices? A. Hubs, switches, and routers C. Switches, bridges, and NICs D. Switches, bridges, and routers: B. Hubs, switches, and bridges
Your are the network administrator. You want to configure a computer to run SLIP as a dial-up protocol. Which protocol should you install? A. TCP/IP B. IPX/SPX C. NetBEUI D. Appleshare IP: A. TCP/IP
With reguard to TCP and UDP, which of the following statements are true? A. TCP is connection-oriented, UDP is reliable B. TCP is connectionless, UDP is unreliable C. TCP is connection-oriented, UDP is unreliable D. TCP is connectionl: C. TCP is connection-oriented, UDP is unreliable
An Internet Connection Sharing (ICS) network has been setup as follows: ICS HOST: Windows 2000 PRO, 3com NIC, Intel Etherlink NIC, file and print sharing enabled, TCP/IP installed ICS CLIENT 1: Win 98 2nd Edition, 3com NIC, file and p: A. TCP/IP not installed on Client 1
Which of the following protocols uses domain name resolution to find addresses? A. TCP/IP not installed on Client 1 B. IPX/SPX C. NetBEUI D. AppleTalk: A. TCP/IP not installed on Client 1
Which of the following IP addresses are NOT valid? A. 192.168.0.1 B. 172.192.4.256 C. 156.144.226.123 D. 10.24.12.0: B. 172.192.4.256
Which one of the following is a class A IP address? A. 172.168.12.4 B. 18.12.4.1 C. 169.254.254.254 D. 255.255.255.0: B. 18.12.4.1
Which of the following techniques can be used to segment a network? A. Subnetting B. Implementing DCHCP C. Implementing DNS D. Installing hubs: A. Subnetting

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