2.) B. Bob’s incoming email server
3.) B. The call uses only digital electrical signals and D. The call represents short sounds as a unique set of bits
4.) C. the call uses both analog and digital electrical signals and D. the call represents each spoken word as a unique set of bits
5.) A. A character set
6.) D. Compress the video
7.) C. Books
8.) C. The web server sees the request for the web address, dynamically creates a single graphical image of the entire web page, and sends that one graphical image to the web browser.
9.) A. A website typically contains many web objects C. A web page typically contains many web objects and D. A web object typically contains many websites
10.) C. The operating system on the PC and D. The PC’s NIC
11.) A. 16 HTTP GET request messages with 16 matching HTTP GET reply messages
12.) C. Web servers and D. The GET request
13.) B. www.certskills.com
14.) C. Node
15.) A. Router D. Switch
16.) D. SMB network
17.) D. Switch
18.) D. The internet
19.) A. Internet service provider 20.) B. Any ISP’s network
Has an active central node that usually has the means to prevent echo-related problems. Twisted pair cables typically used in star topologies are not as immune to interferences as coxiale cable.
A single device or cable failure will not bring down the network.
Expensive because of additional cabling and central hub require.
If the centralize device fails the entire system is affected.
Ring topology is an active topology because each computer repeats (boosts) the signal before passing it on to the next computer. Adding additional nodes has very little impact on bandwidth.
It prevents network collisions because of the media access method or architecture required.
Because all stations are wired together, to add a station you must shut down the network temporarily.
If any of the nodes fail then the ring is broken and data cannot be transmitted successfully.
The number of computers on a bus network