Exit Zen
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../../protocols/wifi.rst:23 • ../../protocols/wifi.rst:25
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54 Mbps
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../../bibliography.rst:66
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Fletcher, J., `An Arithmetic Checksum for Serial Transmissions <https://dx.doi.org/10.1109/TCOM.1982.1095369>`_, Communications, IEEE Transactions on, Jan. 1982, Vol. 30, N. 1, pp. 247-252
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../../glossary.rst:156
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BGP
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../../exercises/ex-sharing.rst:432
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In practice, a router is connected to multiple input links. The figure below shows an example with two hosts.
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../../exercises/reliability.rst:42
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when every second acknowledgment is discarded due to transmission errors
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../../exercises/network.rst:178
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`R3->R2->R4->R5` and `R1->R2->R5`
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../../exercises/sockets.rst:175
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Using this code, the program will read and print an arbitrary message received from an arbitrary peer who knows the program's socket address. If we want to know the address of the peer that sent us the message, we can use the ``recvfrom`` system call. This is what a modified version of ``bind_and_receive_from_peer`` is doing below.
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../../exercises/transport.rst:142
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DATA segments contain a sequence number that is incremented for each DATA segment transmitted
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../../principles/naming.rst:112
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To retrieve the mapping for host `h2.dom`, a client sends its query to the name server that is responsible for domain `.dom`. The name server directly answers the query. To retrieve a mapping for `h3.a.sdom1.dom` a DNS client first sends a query to the name server that is responsible for the `.dom` domain. This nameserver returns the nameserver that is responsible for the `sdom1.dom` domain. This nameserver can now be contacted to obtain the nameserver that is responsible for the `a.sdom1.dom` domain. This nameserver can be contacted to retrieve the mapping for the `h3.a.sdom1.dom` name. Thanks to this structure, it is possible for a DNS client to obtain the mapping of any host inside the `.dom` domain or any of its subdomains. To ensure that any DNS client will be able to resolve any fully qualified domain name, there are special nameservers that are responsible for the root of the domain name hierarchy. These nameservers are called :term:`root nameserver`.
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../../principles/network.rst:87
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the network layer address of the destination host
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../../principles/reliability.rst:54
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:math:`10^{12}`
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../../principles/transport.rst:50
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Alice : `3.1415`
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../../principles/sharing.rst:103
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In the above network, the allocation of all flows would grow until `A1-A2` and `B1-B2` reach 5 Mbps. At this point, link `R1-R2` becomes congested and these two flows have reached their maximum. The allocation for flow `C1-C2` can increase until reaching 15 Mbps. At this point, link `R2-R3` is congested. To increase the bandwidth allocated to `C1-C2`, one would need to reduce the allocation to flow `B1-B2`. Similarly, the only way to increase the allocation to flow `B1-B2` would require a decrease of the allocation to `A1-A2`.
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../../protocols/dns.rst:67
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Reverse DNS
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../../principles/security.rst:270
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`A cryptographic algorithm should be secure even if the attacker knows everything about the system, except one parameter known as the secret key.`
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../../exercises/dns.rst:55
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What is the lifetime associated to this IPv6 address ?
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../../exercises/ipv6.rst:151 • ../../exercises/ipv6.rst:229
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router ``R3`` uses address ``2001:db8:1341:34::3`` on its East interface and address ``2001:db8:1341:13::3`` on its North interface
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../../exercises/lan.rst:195
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The network contains five nodes and six links.
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../../exercises/routing-policies.rst:167
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A ``traceroute6`` towards ``ipv6.google.com`` provides the following output :
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../../exercises/routing-protocols.rst:261
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The requested information is sent in a `LS Update` packet shortly after that.
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