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A router operates at which OSI layer? Application Presentation Session Transport Network Data Link Phsical Suppose application data of size X bytes is transmitted from

A router operates at which OSI layer? Application Presentation Session Transport Network Data Link Phsical

Suppose application data of size X bytes is transmitted from system A to system B via the OSI layers and that the encapsulation overhead at each layer is exactly 10 bytes. How many bytes will be received by the network layer at system B? X bytes X+10 bytes X+20 bytes X+30 bytes X+40 bytes X+50 bytes X+60 bytes

What is produced by the deencapsulation of a frame? Segment Packet Data segment Bits at layer 0

What is equivalent to the OSI network layer in the TCP/IP model? Application Data link Internet Transport

To connect two nearby wired LANs when you can't easily run cable between them, you would use which of the following wireless infrastructure modes? Standalone Wired extension Enterprise extended Bridge

Disabling SSID broadcast is an effective way to hide the existence of a wireless network from potential hackers. True False

The logical topology of the Internet is which of the following? Ring Bus Star Mesh

If you need a wireless data rate of 100 Mbps, which of the following could you use? (Check all that apply.) 802.11 802.11a 802.11b 802.11g 802.11n 802.11ac

To obtain the OSI layer 2 address for a given OSI layer 3 address, which protocol is used? ARP RARP DHCP ICMP

The "twist" in a pair of wires inside a twisted pair cable accomplishes which which of the following? (Check all that apply.) Reduced crosstalk Reduced rates of packet collisions Higher bandwidth Increased frequency spectrum

The IPv4 address 146.186.157.6 is in which IP class? A B C D E

Which of the following provides confidentiality for EAP traffic? LEAP PEAP TKIP WPA2 802.1X

A static packet filtering firewall can be configured to drop packets containing a known buffer overflow payload. True False

Which of the following media access approaches in the event of collision, requires connection stations to wait for a period of time whose duration is of random length before re-attempting transmission? CSMA CSMA/CA CSMA/CD Token passing Polling

Your web browser has a TCP connection from local port 58088 to remote port 443. The local port is an instance of which of the following? A well-known port A registered software port An ephemeral port None of the above

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