#1 Download
computer science & engineering books
free #2 Display your sponsored posts here. Reach 10,000+ students. Contact: info[at]cpentalk.com for quote #3 Take the
Ultimate Trivia Quiz.
See where you rank globally.
Login
Remember
Register
Questions
Hot!
Unanswered
Categories
Ask a Question
Trivia Quiz
Download Books
Ask a Question
Recent questions in Computer Networks
–1
vote
1
answer
Duplicate: Describe why an application developer might choose to run an application over UDP rather than TCP.
asked
in
Computer Networks
by
anonymous
0
votes
1
answer
How are different RTP streams in different sessions identified by a receiver? How are different streams from within the same session identified?
asked
in
Computer Networks
by
(user.guest)
0
votes
1
answer
Why is a packet that is received after its scheduled playout time considered lost?
asked
in
Computer Networks
by
(user.guest)
0
votes
1
answer
What is the difference between end-to-end delay and packet jitter? What are the causes of packet jitter?
asked
in
Computer Networks
by
(user.guest)
0
votes
1
answer
With HTTP streaming, are the TCP receive buffer and the client’s application buffer the same thing? If not, how do they interact?
asked
in
Computer Networks
by
(user.guest)
0
votes
1
answer
Streaming video systems can be classified into three categories. Name and briefly describe each of these categories.
asked
in
Computer Networks
by
(user.guest)
0
votes
1
answer
Suppose an analog audio signal is sampled 16,000 times per second, and each sample is quantized into one of 1024 levels. What would be the resulting bit rate of the PCM digital audio signal?
asked
in
Computer Networks
by
(user.guest)
0
votes
1
answer
Signature-based IDSs and IPSs inspect into the payloads of TCP and UDP segments. True or False?
asked
in
Computer Networks
by
(user.guest)
0
votes
1
answer
Why must an application gateway work in conjunction with a router filter to be effective?
asked
in
Computer Networks
by
(user.guest)
0
votes
1
answer
Consider a traditional (stateless) packet filter. This packet filter may filter packets based on TCP flag bits as well as other header fields. True or False?
asked
in
Computer Networks
by
(user.guest)
0
votes
1
answer
In WEP, an IV is sent in the clear in every frame. True or False
asked
in
Computer Networks
by
(user.guest)
0
votes
1
answer
Consider WEP for 802.11. Suppose that the data is 10101100 and the keystream is 1111000. What is the resulting ciphertext?
asked
in
Computer Networks
by
(user.guest)
0
votes
1
answer
An IKE SA and an IPsec SA are the same thing. True or False?
asked
in
Computer Networks
by
(user.guest)
0
votes
1
answer
Suppose Bob initiates a TCP connection to Trudy who is pretending to be Alice. During the handshake, Trudy sends Bob Alice’s certificate. In what step of the SSL handshake algorithm will Bob discover that he is not communicating with Alice?
asked
in
Computer Networks
by
(user.guest)
0
votes
1
answer
What is the purpose of the random nonces in the SSL handshake?
asked
in
Computer Networks
by
(user.guest)
0
votes
1
answer
Is the message integrity scheme based on HMAC susceptible to playback attacks? If so, how can a nonce be incorporated into the scheme to remove this susceptibility?
asked
in
Computer Networks
by
(user.guest)
0
votes
1
answer
What is the purpose of a nonce in an end-point authentication protocol?
asked
in
Computer Networks
by
(user.guest)
0
votes
1
answer
Suppose certifier.com creates a certificate for foo.com. Typically, the entire certificate would be encrypted with certifier.com’s public key. True or False
asked
in
Computer Networks
by
(user.guest)
0
votes
1
answer
In what way does a hash provide a better message integrity check than a checksum (such as the Internet checksum)?
asked
in
Computer Networks
by
(user.guest)
0
votes
1
answer
Suppose you want to encrypt the message 10101111 by encrypting the decimal number that corresponds to the message. What is the decimal number?
asked
in
Computer Networks
by
(user.guest)
0
votes
1
answer
From a service perspective, what is an important difference between a symmetric-key system and a public-key system?
asked
in
Computer Networks
by
(user.guest)
0
votes
1
answer
Internet entities (routers, switches, DNS servers, Web servers, user end systems, and so on) often need to communicate securely. Give three specific example pairs of Internet entities that may want secure communication.
asked
in
Computer Networks
by
(user.guest)
0
votes
1
answer
What are the differences between message confidentiality and message integrity? Can you have confidentiality without integrity? Can you have integrity without confidentiality? Justify your answer.
asked
in
Computer Networks
by
(user.guest)
0
votes
1
answer
Using the monoalphabetic cipher in Figure 8.3, encode the message “This is an easy problem.” Decode the message “rmij’u uamu xyj.”
asked
in
Computer Networks
by
(user.guest)
0
votes
1
answer
What are three approaches that can be taken to avoid having a single wireless link degrade the performance of an end-to-end transport-layer TCP connection?
asked
in
Computer Networks
by
(user.guest)
0
votes
1
answer
What is the role of the anchor MSC in GSM networks?
asked
in
Computer Networks
by
(user.guest)
0
votes
1
answer
What are the purposes of the HLR and VLR in GSM networks? What elements of mobile IP are similar to the HLR and VLR?
asked
in
Computer Networks
by
(user.guest)
0
votes
1
answer
What are three important differences between the 3G and 4G cellular architectures?
asked
in
Computer Networks
by
(user.guest)
+1
vote
1
answer
How has the IEEE divided the data link
asked
in
Computer Networks
by
anonymous
0
votes
1
answer
What is the role of the eNodeB, MME, P-GW, and S-GW in 4G architecture?
asked
in
Computer Networks
by
(user.guest)
0
votes
1
answer
What is the role of the RNC in the 3G cellular data network architecture? What role does the RNC play in the cellular voice network?
asked
in
Computer Networks
by
(user.guest)
0
votes
1
answer
Consider two mobile nodes in a foreign network having a foreign agent. Is it possible for the two mobile nodes to use the same care-of address in mobile IP? Explain your answer.
asked
in
Computer Networks
by
(user.guest)
0
votes
1
answer
What are the differences between a master device in a Bluetooth network and a base station in an 802.11 network?
asked
in
Computer Networks
by
(user.guest)
0
votes
1
answer
Suppose the IEEE 802.11 RTS and CTS frames were as long as the standard DATA and ACK frames. Would there be any advantage to using the CTS and RTS frames? Why or why not
asked
in
Computer Networks
by
(user.guest)
0
votes
1
answer
Why are acknowledgments used in 802.11 but not in wired Ethernet?
asked
in
Computer Networks
by
(user.guest)
0
votes
1
answer
True or false: Before an 802.11 station transmits a data frame, it must first send an RTS frame and receive a corresponding CTS frame.
asked
in
Computer Networks
by
(user.guest)
0
votes
1
answer
Describe the role of the beacon frames in 802.11.
asked
in
Computer Networks
by
(user.guest)
0
votes
1
answer
Suppose there are two ISPs providing WiFi access in a particular café, with each ISP operating its own AP and having its own IP address block.
asked
in
Computer Networks
by
(user.guest)
0
votes
1
answer
What are the differences between the following types of wireless channel impairments: path loss, multipath propagation, interference from other sources?
asked
in
Computer Networks
by
(user.guest)
0
votes
1
answer
What does it mean for a wireless network to be operating in “infrastructure mode?” If the network is not in infrastructure mode, what mode of operation is it in, and what is the difference between that mode of operation and infrastructure mode?
asked
in
Computer Networks
by
(user.guest)
Page:
1
2
3
4
...
6
next »
Welcome to
CPEN Talk
Solution-oriented students of
computer engineering
on one platform to get you that
ONE SOLUTION
If Chuck Norris writes code with bugs, the bugs fix themselves.
...
